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1.
A critical analysis of publications on soil fertility was carried out using data from Scopus database for the period of 2007–2016. A total of 16,612 articles were found relating to soil fertility. An exponential increase was evident from the review of published literature and scientists involved in the soil fertility research also increased over period of time. The journals Soil Science and Plant Nutrition and Acta Ecologica Sinica were major publishers of the soil fertility research. Giller K. E. from Wageningen University, The Netherlands was a major contributor followed by Salvati L. of Centro Per Lo Studio Delle Relazioni Piñata-Suolo, Italy. China was the most productive country with 3323 articles. Cluster analysis of author-supplied keywords showed five clusters, namely, desertification, soil organic carbon, plant nutrition, nitrogen, and geostatic. This work will be useful to researchers to know the trends in soil fertility research.  相似文献   

2.
This article analyzes publication trends in food-borne disease research for the period 1991–2015, using data collected from the Web of Science Core Collection. A total of 11,725 research articles were used in the analysis. Results showed that the number of publications rose exponentially during the period of study. The average number of authors per article also increased. “Food Science & Technology” was the leading subject category under which the majority of articles placed. The Journal of Food Protection was the most productive journal with 794 articles. “Kang, DH” was the most productive author and the United States was the most productive country, followed by China.  相似文献   

3.
在高架栽培环境下,精准识别草莓果实并分割果梗对提升草莓采摘机器人的作业精度和效率至关重要。该研究在原YOLOv5s模型中引入自注意力机制,提出了一种改进的YOLOv5s模型（ATCSP-YOLOv5s）用于高架草莓的果实识别,并通过YOLOv5s-seg模型实现了果梗的有效分割。试验结果显示,ATCSP-YOLOv5s模型的精确率、召回率和平均精度值分别为97.24%、94.07%、95.59%,较原始网络分别提升了4.96、7.13、4.53个百分点;检测速度为17.3帧/s。此外,YOLOv5s-seg果梗分割模型的精确率、召回率和平均精度值分别为82.74%、82.01%和80.67%。使用ATCSP-YOLOv5s模型和YOLOv5s-seg模型分别对晴天顺光、晴天逆光和阴天条件下的草莓图像进行检测,结果表明,ATCSP-YOLOv5s模型在3种条件下识别草莓果实的平均精度值为95.71%、95.34%、95.56%,较原始网络提升4.48、4.60、4.50个百分点。YOLOv5s-seg模型在3种条件下分割草莓果梗的平均精度值为82.31%、81.53%、82.04%。该研究为草莓采摘机器人的自动化作业提供了理论和技术支持。  相似文献   

4.
ABSTRACT

This study seeks to (1) identify the most productive source for current awareness information for the faculty and graduate students in the Department of Food Science and Technology at the University of Arkansas, (2) identify the update frequency and, hence, currency of information, and (3) identify effectiveness in retrieval. It is also hoped that this research will provide evidenced-based information for subscribing to a particular current awareness database for University of Arkansas food science and technology patrons and will allow us to direct patrons in this subject area to the best and most relevant resource for their current information needs. This paper reports the results of our evaluation of four current awareness sources on three search interfaces. These include Article 1st (First Search); Ingenta Connect; ISI Current Contents: Agriculture, Biology and Environmental Sciences (ABES); and ISI Current Contents: Life Sciences (LS). A listing of journals cited by faculty and graduate students in the Department of Food Science at the University of Arkansas for the period 1987–2003 was used to check against these databases. The extent of coverage of the journals and timeliness of update were used as criteria for the evaluation. The characteristics of the three interfaces are highlighted with respect to their effectiveness in providing a current awareness service.  相似文献   

5.
以安徽省长丰县为例,利用GIS对长丰县不同耕地中的草莓适宜性进行了评价。通过建立评价基础属性数据库、选择评价因子、确定评价因子的组合权重和隶属度等,得出长丰县不同耕地上草莓适宜性评价的分级方案,并对结果进行了详细分析。利用GIS技术进行草莓适宜性评价研究,可以从宏观上合理布局草莓的种植,实现产量的最大化,为稳产增产提供了科学指导,同时也能为土地管理和规划提供科学的量化依据。  相似文献   

6.
The use of organic fertilizers to improve the agronomic parameters of soy (Glycine max (L.) Merrill) has been considered a key production practice. During the period from December 2015 to May 2016, the productive behavior of Var-21 soya under the application of two organic biofertilizers was assessed in southern Haiti. Four random repetitions were carried out with biofertilizer A (cow dung + leguminous waste + ash + rice chaff) and biofertilizer B (cow dung + molasses + quick lime). The variables analyzed were days to flowering, plant height, number of beans per pod, weight of 1,000 beans, and yield per hectare, with statistical evaluation by analysis of variance and Tukey’s test. The best yield was obtained with biofertilizer A in treatment T2 (150 L/ha) (4,129.99 kg/ha). This study enabled us to identify the most efficient foliar fertilizer to improve the production parameters of Var-21 soya. The information obtained will serve as a basis for future research, especially into the effectiveness of organic fertilizers on other crop species, and under other agro-environmental conditions.  相似文献   

7.
ABSTRACT

Identifying the best source of information to satisfy the needs of local clientele has always been the challenge facing collection development and instruction librarians. In order to provide users with the best possible access tool and source for comprehensive information, it is important that librarians be aware of the most productive sources of information in a field. This paper identifies where the bulk of agricultural economics research is published and indexed. It also ascertains whether Google Scholar is as productive in covering this information as CAB Abstracts and EconLit. The cited reference counts for the top 50 cited sources in Web of Knowledge and Google Scholar are also compared. The scatter of the journal literature in this field, based on the Library of Congress Subject Headings, is also provided. The study identified a broad range of article scattering in areas where agricultural economics and agribusiness materials are published. On the cited reference count, Google Scholar was as productive as the Web of Knowledge. Google Scholar is a free source of very useful information for cited references and other subject searches in the area of agricultural economics and could be used to complement traditional databases.  相似文献   

8.
Healthy, well‐rooted planting stocks are important for profitable fruit production of strawberry (Fragaria × ananassa Duch.). Adequate nutrient inputs and crop‐rotation practices are among the most important measures to insure a successful, rapid development of strawberry nursery plants. However, relationships between macronutrient use and strawberry‐nursery‐plant formation in different rotation environments are not well understood. Our objectives were to assess strawberry plant P : N nutrition and nursery development under various limited and unlimited P inputs applied at different growth stages and to examine how nursery plants cope with limited P inputs. The field studies were conducted in a wheat–ryegrass–ryegrass–strawberry (WRRS) system in 2008 and in another corn–ryegrass–ryegrass–strawberry (CRRS) system in 2009 in Nova Scotia, Canada. The nursery crop was cv. Strawberry Festival and the experimental treatments consisted of three mother‐stock P (MSP) rates (0, 6.6, and13.2 P kg ha–1) and five daughter‐plant P (DPP) rates (0, 13.2, 26.4, 39.6, and 52.8 kg P ha–1), representing 0%–125% of the regional recommendations for strawberry nursery. The P treatments were arranged with three blocks in a split‐plot design in each field. The results showed that the effects and interactions of the MSP and DPP treatments were significant (P < 5%) on whole‐plant P and N acquisition and nursery productivity. Two‐year whole‐plant total P and N acquisition varied between (13.2 ± 2.0) kg P ha–1 and (46 ± 7.3) kg N ha–1 (n = 270) in both nursery systems. There was a quadratic regression relationship between nursery runners and daughter plants with plant P and N acquisition (0.33 < R2 < 0.42, P < 5%). Soil pH levels declined with time and were positively correlated with nursery‐plant formation. Too many runners (18–22 per mother stock) might reduce nursery‐plant formation. Limited P inputs (37.5%–62.5% of regular recommendation) might result in a suitable plant P : N ratio (0.12–0.13) and adequate daughter plant‐to‐runner ratios (1.4–1.7) for optimum nursery formation (14–16 daughter plants per mother stock). Nutrient P was the single controlled factor influencing the N acquisition of nursery plants. High P inputs (> 39.6 P ha–1 or > 75% of regular recommendation) may harm the crops. Therefore, this study implies that low‐input horticulture can improve the nutrition management of strawberry nursery.  相似文献   

9.
Verticillium dahliae Kleb, the cause of Verticillium wilt disease, is a destructive pathogen that leads to severe yield losses in strawberry fields and thus considerable economic damages. Although rapid identification and detection methods are becoming available more, pathogen quantification remains one of the main challenges in the disease management. In this study, a real-time polymerase chain reaction (rtPCR) assay was developed to quantitatively assess V. dahliae abundance directly from affected roots and soil collected from different areas in Estonia. A specific primer pair based on the ribosomal DNA (rDNA) internally transcribed spacer was designed for SYBR Green-based assay. Strawberry plant and soil samples were randomly collected from different areas in Estonia and analyzed for V. dahliae by soil plating technique and rtPCR assay. The assay was specific for V. dahliae so that the minimum detection limit was 0.93?pg?µl?1 of pathogen DNA and the lowest amount of V. dahliae detected in soil was 10.48?pg?µl?1 of target DNA corresponding to one microsclerotia per gram of soil. This technique allowed rapid detection and quantification of the pathogen DNA at the picogram level in soils and even in symptomless plants, facilitating the screening of the pathogen in diverse areas. This is the first study about the rtPCR technique being used successfully to assess populations of V. dahliae with high specificity and sensitivity in Estonia strawberry fields. Results of this research can be useful for growers and agricultural organizations to improve available disease management strategies against Verticillium wilt.  相似文献   

10.
Industrial activities can contribute to the accumulation of heavy metals in soils, which could potentially threaten public health and the environment. This research was conducted to investigate the relationships between pH and total organic carbon (TOC) with soil chemical parameters, including exchangeable and total Cu, Zn, Cd, Pb, K, and Mg concentrations in soils near Panevėžys and Kaunas, Lithuania. Principal component regression (PCR) and non‐linear regression were used to find statistical relationships between pH, TOC, and the other soil properties studied. The results of correlation tests indicated that pH and TOC had strong relationships with most of the soil properties. The results of PCR [R 2 = 0·87, RMSE = 0·046] and non‐linear regression [R 2 = 0·91, RMSE = 0·041] (pH and the entire parameters), PCR [R 2 = 0·777, RMSE = 0·058] and non‐linear regression [R 2 = 0·871, RMSE = 0·046] (pH and the exchangeable parameters) to model the relationships between pH and soil chemical properties were promising and significant. Exchangeable heavy metal concentrations increased for pH > 5. Even though the relationships between TOC and heavy metals were significant, they were not as powerful as the relationships between pH and these metals. It was concluded that total metal concentrations in the study soils can be predicted by either pH or TOC. Metal mobility could most likely be controlled at the study site by manipulating soil pH and/or TOC. Finally, it is suggested that when there are financial and time limitations, assessment of total exchangeable metal concentrations using soil pH and/or TOC could be productive. Copyright © 2016 John Wiley & Sons, Ltd.  相似文献   

11.
Abiotic stress is becoming more prevalent as the intensity of agriculture and the demand for farmable land are ever increasing. Besides drought and salinity stress, chilling or freezing stress is one of the most important limiting factors of crop production all around the world. Salicylic acid (SA) is a common plant‐produced signal molecule that is responsible for inducing resistance to a number of biotic and abiotic stresses. This study was conducted to determine the effect of foliar SA applications on fruit‐quality characteristics and yield of strawberry under antifrost heated greenhouse conditions in two successive experiments. Spraying of 1 mM SA (1 mM) was done once (SA1), twice (SA2), three times (SA3), or four times (SA4) during the vegetation period with 7 d intervals. Concentrations of chlorophyll and minerals were measured in leaves, and vitamin C (ascorbic acid), total soluble solids (TSS), titratable acidity (TA), and color (a*) in fruits. Fruit weight, early yield, and total yield were also determined. Foliar applications of SA positively affected TSS and ascorbic acid (AA) content of strawberry fruits. Salicylic acid treatments had no effect on TA of strawberry fruits. SA4 treatment gave the greatest a* in fruit and chlorophyll‐concentration values in the leaves. It was shown that SA treatments increased the content of all nutrients in the leaves of strawberry plants, and greater values often were obtained from SA3 and SA4 treatments. The early yield and total yield of strawberry were significantly affected by SA applications, among which SA3 and SA4 resulted in the highest early and total yields. The present study suggests that SA3 and SA4 treatments can ameliorate the deleterious effects of low temperatures on strawberry plants and that SA application may offer an economical and simple method for low‐temperature protection.  相似文献   

12.
Declines in many bumble bee species have been documented in Europe raising several ecological and economic concerns. The nature and extent of bumble bee decline in North America is poorly understood due mainly to a lack of baseline and long-term data. Museum collections provide excellent sources of information on past and current species distributions, which can be used to infer changes in the composition of insect communities. Using the Illinois Natural History Survey’s electronic database of Hymenoptera and a recent biodiversity survey of historically sampled localities, we were able to examine changes in the richness and distribution of the bumble bee fauna of Illinois over the last century. We found that bumble bee species richness declined substantially during the middle of the century (1940-1960). Four species were locally extirpated: Bombus borealis, Bombus ternarius, Bombus terricola and Bombus variabilis. The ranges of Bombus affinis, Bombus fraternus, Bombus pensylvanicus and Bombus vagans have also decreased in Illinois. Our analyses also indicated that current bumble bee diversity is highest in northern Illinois, where conservation efforts would be most productive. Our study demonstrates that half of the bumble bee species found historically in Illinois have been locally extirpated or have suffered declines, supporting observations of broader declines in North America. Major declines in the bumble bee fauna coincided with large-scale agricultural intensification in Illinois between 1940 and 1960. Attempts to conserve bumble bees in Illinois should involve wildlife-friendly approaches to agriculture, such as increasing agricultural land set-asides and hedgerows, and employing integrated pest management.  相似文献   

13.
Since the 1960s, the implemented soil conservation measures on steep slopes and the densely planted shelterbelts as well as the constructed reservoirs and ponds in Baiquan County, northeastern China have dramatically altered the landscape and would greatly influence soil erosion and sediment yield (SY ). However, how these land use changes and the constructed dams affected soil erosion and SY still remained unclear. A physically distributed soil erosion model WaTEM/SEDEM that has been calibrated and validated using 25 reservoir SY s in the study area was applied using nine land use scenarios (land uses in 1954, 1975 and 2010, each with 8, 32 and without dams) to assess their impacts on sediment delivery at the Shuangyang catchment (915 km2). The results show that land use changes as well as the increased dam numbers progressively decreased catchment sediment delivery and the impact of dams on sediment delivery was more efficient under the intensified land use condition (1954 land use without reservoirs). With respect to 1954 land use without dams, current land use condition (2010 land use with 32 dams) was simulated to decrease SY by 61·8%. Soil conservation measures (terrace and contour tillage as well as shelterbelts) on the slopes greatly influenced SY and over 80% of the reduced SY were caused by land use changes. This study indicates that soil conservation measures are sustainable sediment control measures for the black soil region because the accumulation of sediment in dams causes shortening of the useful life in reservoirs and ponds and implies increasing financial costs. Copyright © 2016 John Wiley & Sons, Ltd.  相似文献   

14.
Zhao  Qiaoqiao  Wang  Li  Liu  Hao  Zhang  Qingfeng 《Journal of Soils and Sediments》2019,19(10):3631-3647
Purpose

The trends in runoff and sediment transportation in typical Loess Plateau basins and the factors causing the changes need to be clarified.

Materials and methods

In this study, the runoff and sediment transportation data from 1960 to 2016, from hydrological stations (Wenjiachuan, Baijiachuan, Ganguyi, and Zhuangtou) based in four typical basins, were analyzed systematically using linear regression, anomaly accumulation, the Mann–Kendall test, and double accumulation curve. The characteristics of the runoff and sediment transportation and their responses to climatic and anthropogenic activities were investigated using several hydrological analytical and statistical methods.

Results and discussion

The results indicate that both runoff and sediment transportation in the four typical basins have decreased sharply from 1960 to 2016. Since the implementation of the Grain-for-Green Project in 1999, the reduction has been more marked, in particular the runoff and sediment discharge of the Kuye River (Wenjiachuan station). Compared with the period 1960–1999, the average annual runoff and sediment discharge in 2000–2016 had decreased by 76.72% and 94.50%, respectively. Apart from the Wuding River (Baijiachuan station), an abrupt change in runoff and sediment transportation in the basins occurred within 2–7 years of the implementation of the Grain-for-Green Project.

Conclusions

In general, returning farmland to forests (grass) has had a more pronounced effect on the reduction of runoff and sediment in the more northerly Kuye River (Wenjiachuan station) and Wuding River (Baijiachuan station) basins, compared with the more southerly Yanhe River (Ganguyi station) and Beiluo River (Zhuangtou station) basins.

  相似文献   

15.
Plant breeders are interested in strawberry species as donors of volatile compounds in breeding programmes because of the diversity and intensity of wild strawberry aroma. Therefore, the topic of this paper is the prospective analysis of four accessions of four wild strawberry accessions in comparison to a standard cultivar of Fragaria × ananassa Duch. by using human sensory, gas chromatography mass spectrometry (GCMS) and gas chromatography–olfactometry (GCO). The wild species have higher aroma intensities compared with the cultivated one. The flavour quality differs significantly. Semiquantitative GC analysis revealed that F. × ananassa cv. ‘Elsanta’ has the lowest content of volatile compounds whereas Fragaria moschata L. ‘Cotta’ has the highest. The aroma impressions, measured by GCO, support the findings of GCMS analyses. The nasal impact frequency (NIF)-profiles of the wild types are more manifold and of higher intensities than those of the cultivated F. × ananassa cv. ‘Elsanta’ which corresponds with the overall flavour impression when tasting the fresh fruits.  相似文献   

16.
This study was conducted to examine the effect of inoculation of plant growth-promotion Rhizobacteria (PGPR) on phenological data, total yield and fruit quality characteristics of strawberry (Fragaria x ananassa Duch) cv. ‘Fern’ during 2006 and 2007. All bacterial root inoculations significantly increased yield per plant (1.98–20.85%), average fruit weight (3.05–19.26%) and first quality fruit ratio (10.30–32.05%) compared to control, whereas the bacterial inoculations did not affect leaf area, first flowering and harvest dates in strawberry cv. ‘Fern’. The bacteria also increased soluble solid content (SSC) and vitamin C in strawberry cv. ‘Fern’. The vitamin C contents of fruits ranged from 47.41 mg 100 g?1 (control) to 53.88 mg 100 g?1 (RC05), while SSC values varied between 10.16% (control) and 12.83% (RC01). Results of this study show that RC19 (Bacillus simplex), RC05 (Paenibacillus polymyxa), and RC23 (Bacillus spp.) have the potential to increase the yield and growth of strawberries.  相似文献   

17.
Plant growth promoting effects of Alcaligenes 637Ca, Staphylococcus MFDCa-1, MFDCa-2, Agrobacterium A18, Pantoea FF1 and Bacillus M3 were tested on strawberry cv. ‘Aromas’ based on yield, number, and weight of fruit, leaf area, vitamin C, total soluble solids (TSS), acidity and ionic composition of leaves under calcareous soil conditions. The results demonstrated that all of bacterial treatments significantly affected all parameters tested. The best result was obtained from 637Ca treatment, which significantly increased fruit yield, number and weight about 47.5, 34.7, and 9.4%, respectively, compared to control. Except for magnesium (Mg) and zinc (Zn) in the leaf, the concentrations of all plant tissue nutrients [nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), iron (Fe), copper (Cu), manganese (Mn), boron (B)] were significantly increased by bacterial treatments tested. The data in the present study showed that all bacterial treatments including Alcaligenes 637Ca, Staphylococcus MFDCa-1, MFDCa-2, Agrobacterium A18, Pantoea FF1, and Bacillus M3 to strawberry plants can ameliorative the deleterious effect of high lime on fruit yield, growth and nutrition. These results suggested that plant growth-promoting Rhizobacteria (PGPR) treatments could be offer an economic and simple means to increased plant resistance for high calcareous soil conditions.  相似文献   

18.
本文采用盆栽分根固定干湿灌溉试验研究了水氮耦合对草莓果实品质及产量的影响。试验设置水分和氮肥2个因素,草莓根区设置湿润与干旱(A/B)两个区域,湿润一侧(A)全生育期内土壤相对含水量均为80%±5%,干旱一侧(B)土壤相对含水量设置为20%±5%(重度水分胁迫)、35%±5%(中度水分胁迫)、50%±5%(轻度水分胁迫)3个处理水平;施氮量设置0.5 g(N)×kg~(-1)(低氮)、0.75 g(N)×kg~(-1)(中氮)、1 g(N)×kg~(-1)(高氮)3个处理水平,对照处理(即常规生产模式,CK)A/B两区域均为80%±5%土壤相对含水量、中氮[0.75 g(N)×kg~(-1)]水平。研究结果表明:1)分根干湿灌溉显著减少了草莓全生育期灌溉水量,提高了草莓的水分利用效率(WUE),全生育期内干旱一侧(B)土壤相对含水量为20%±5%、35%±5%和50%±5%的水分处理总灌溉水量分别为14.77 L×株~(-1)、16.62 L×株~(-1)和18.47 L×株~(-1),较CK处理(24.62 L×株~(-1))分别减少40.0%、32.5%和25.0%;以中度水分胁迫中氮水平的草莓水分利用效率(WUE)最高,为13.55 g×L-1,较CK处理提高47.1%,而产量没有明显减少;耦合分根干湿灌溉和施氮处理,轻度水分胁迫中氮水平下草莓果实产量最高,较CK处理提高4.4%。2)从对草莓果实品质影响角度分析,中氮及中度水分胁迫处理的草莓果实中Vc含量、可溶性糖含量、有机酸含量和糖酸比分别比CK处理增加63.3%、12.5%、3.9%和8.3%。综合考虑不同水氮耦合处理对草莓果实品质、产量、水分利用效率及对农业环境安全的影响,以湿润一侧(A)保持土壤相对含水量为80%±5%、干旱一侧(B)保持土壤相对含水量为35%±5%,且0.75 g(N)×kg~(-1)施氮水平为设施草莓生产适宜的水肥管理模式。  相似文献   

19.
Abstract

A field experiment was conducted at Al Malak Valley Farm, El-Sharkeya Governorate-Egypt (30°–51° N; 32°–53° E) using 15 years old productive mango (Mangifera indica L.) trees cv. Zebda. The experiment was repeated for two successive seasons (2014/2015) and (2015/2016). The trees were planted 8×8 meters apart in sandy soil under drip irrigation system using the Nile water. Treatments included three concentrations of boron (0.0, 250, 500?mg L?1) and three concentrations of nitrogen (1000, 1250, 1500?g nitrogen/tree/year). Boron was applied as foliar spray of boric acid and nitrogen was applied to the soil as ammonium sulfate. Treatments were arranged in a factorial Completely Randomized Block Design with three replicates for each treatment. Results show that boron application has improved mango tree nutritional status. Leaf nitrogen, phosphorus, potassium and boron concentrations significantly increased as the boron application rate increased. In addition, boron application resulted in significant increase in leaf total chlorophyll, total carbohydrates, total sugars, carbon/nitrogen (C/N) ratio and decrease in total phenol content. Boron showed higher impact than nitrogen on all tested parameters. The interaction treatment of 250?mg L?1 boron and 1500?g/tree nitrogen proved to be the best treatment.  相似文献   

20.
A 2-year trial was carried out at the Tanzania Coffee Research Institute (TaCRI) farm in northern Tanzania. The aim was to assess the response of soybean and maize yield attributes to cropping systems, rhizobia inoculation, and phosphorus (P) and potassium (K) fertilization. The study was laid out in a split-split plot design replicated thrice. The statistical analyses were performed using the 3-way analysis of variance in a factorial arrangement. The computation was performed using the STATISTICA software. The Fisher’s least significant difference (LSD) was used to compare the treatment means at p = 0.05 level of significance. The results showed that both cropping systems, rhizobia inoculation, and P and K fertilization significantly (p = 0.05) influenced most of the soybean yield parameters assessed in this study. Specifically, cropping systems significantly (p = 0.05) improved the number of pods per plant, biological yield, grain yield, and harvest index (HI) (2015 and 2016) of soybean. Rhizobia inoculation also significantly (p = 0.05) improved soybean yield attributes such as the number of pods, 100 seed weight, biological yield and grain yield of soybean (2015 and 2016), and HI in soybean (2015). P and K fertilization also significantly (p = 0.05) improved different yield attributes of soybean over the control. It was noted that increasing potassium from 20 to 40 kg/ha improved most of the soybean yield parameters relative to the control. Doubling of P from 26 kg to 52 kg/ha did not significantly change the soybean yield parameter. The doubled combined fertilizers did not significantly increase the yield parameters of soybean suggesting the use of a lower dose of combined fertilizers. Intercropping maize with rhizobia-inoculated soybean significantly improved maize yield compared with intercrop without inoculation. Monocropped maize gave relatively the same yield as those of maize intercropped with inoculated soybean. Fertilization with P and K also improved the yield attributes of maize over the control.  相似文献   

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