共查询到20条相似文献，搜索用时 31 毫秒
1.
Iron (Fe) availability is low in calcareous soils of southern Iran. The chelate Fe-ethylenediamine di (o-hydroxy-phenylacetic acid) (Fe-EDDHA), has been used as an effective source of Fe in correcting Fe deficiency in such soils. In some cases, however, its application might cause nutritional disorder due to the antagonistic effect of Fe with other cationic micronutrients, in particular with manganese (Mn). A greenhouse experiment was conducted to evaluate the influence of soil and foliar applications of Fe and soil application of manganese (Mn) on dry matter yield (DMY) and the uptake of cationic micronutrients in wheat (Triticum aestivum L. var. Ghods) in a calcareous soil. Results showed that neither soil application of Fe-EDDHA nor foliar application of Fe sulfate had a significant effect on wheat DMY. In general, Fe application increased Fe uptake but decreased that of Mn, zinc (Zn), and copper (Cu). Application of Mn increased only Mn uptake and had no significant effect on the uptake of the other cationic micronutrients. Iron treatments considerably increased the ratio of Fe to Mn, Zn, Cu, and (Mn + Zn + Cu). Failure to observe an increase in wheat DMY following Fe application is attributed to the antagonistic effect of Fe with Mn, Zn, and Cu and hence, imbalance in Fe to (Mn + Zn + Cu) ratio. Due to the nutritional disorder and imbalance, it appears that neither soil application of Fe-EDDHA nor foliar application of Fe-sulfate is appropriate in correcting Fe deficiency in wheat grown on calcareous soils. Hence, growing Fe-efficient wheat cultivars should be considered as an appropriate practice for Fe chlorosis-prone calcareous soils of southern Iran. 相似文献
2.
3.
Mahnaz Pirzadeh Majid Afyuni Amirhossein Khoshgoftarmanesh Rainer Schulin 《Biology and Fertility of Soils》2010,46(4):317-322
Modern agricultural systems have to provide enough micronutrient output to meet all the nutritional needs of people. Accordingly,
knowledge on micronutrient status in soil and crop edible tissues is necessary. This study was carried out to investigate
zinc (Zn), iron (Fe), manganese (Mn), and copper (Cu) concentration of calcareous paddy soil and the relative rice grain.
Rice crops (straw, hull, and grain) and associated surface soils (0–25 cm) were collected from 136 fields and analyzed for
total and diethylene triamine pentaacetic acid (DTPA) available Zn, Fe, Mn, and Cu. The DTPA-Zn concentration in more than
50% of paddy soils was less than its critical deficiency concentration (2 mg kg−1), while the concentrations of DTPA Fe, Mn, and Cu were sufficient. The grain Zn concentration of more than 54% of the rice
samples was less than 20 mg kg−1. About 55% and 49% of the rice samples were deficient in Mn and Cu, respectively, while the Fe concentration in rice grains
was sufficient. A significant negative correlation was found between the CaCO3 content and soil DTPA-extractable Zn, Fe, Mn, and Cu. There were significant relationships between the total soil phosphorus
and DTPA-extractable micronutrient concentrations. By considering the average daily rice consumption of 110 g per capita,
the Zn, Fe, Mn, and Cu intake from rice consumption was estimated to be 2.4, 7.7, 1.6, and 0.7 mg for adults, respectively. 相似文献
4.
山东典型植烟土壤微量元素有效态含量研究 总被引：7，自引：3，他引：4
为摸清山东典型植烟区土壤微量元素有效态含量分布情况,采集和分析了临朐、蒙阴、诸城、费县、五莲、莒县6个主要植烟县的烟田耕层和剖面土样。结果表明:①耕层土壤有效Fe和Mn含量丰富,有效Cu含量适中,有效Zn含量较低。②石灰性砂页岩发育的土壤中微量元素有效态含量相对较低。③有效态Fe、Mn和Zn主要为表层富集型,有效Cu垂直分布相对均匀。④土壤有效态Fe、Mn、Cu和Zn含量随pH升高而降低,随有机质增加而增加;pH是影响有效态Fe和Mn的重要因素,而有机质是影响有效态Cu和Zn的重要因素。 相似文献
5.
In pot experiments, uptake of zinc (Zn), copper (Cu), iron (Fe), and manganese (Mn) by hybrid rice from different soil types was compared with a traditional rice (Oryza sativa L.) cultivar. The concentration and total uptake of Fe in the shoots of hybrid rice grown in Oxisol and Ultisol were lower than those of the traditional cultivar. The concentration and total uptake of Zn in the shoots of hybrid rice grown in the Inceptisol (calcareous) were significantly higher than those of the traditional cultivar. Higher ratios of Zn and Fe in upper leaves (UL) to the lower leaves (LL) were found in hybrid rice grown in the calcareous Zn‐deficiency soil. The results indicated that hybrid rice root avoided absorbing excess Fe from Fe‐toxic soils due to its higher oxidizing power, and was more efficient in absorbing Zn from calcareous Zn‐deficient soils than the traditional cultivar. 相似文献
6.
《Communications in Soil Science and Plant Analysis》2012,43(17-18):1883-1893
Abstract Three extracting reagents were evaluated by correlation analyses to provide the best index of Zn, Cu, Mn and Fe availability to wheat (Triticum aestivum L.) plants growing under open field conditions. Twenty one soils were selected to obtain the widest range in properties of soils of the land wheat cultivated. The magnitude of the extractive power varied in the following order: 6NHCl ? EDTA + NH4OAC, pH4.65 > DTPA‐TEA, pH 7.3. The mild extractants, EDTA and DTPA, gave the same order of removal of micronutrients being Zn < Cu < Fe < Mn. The acid extractant was on the contrast more effective on Cu and Fe with respect to Zn and Mn, respectively. Wheat concentrations of Zn, Mn and Fe were significantly correlated to soil micronutrients. Highly significant relationships were found for Zn extracted by DTPA solution (r = 0.737***) and for Mn and Fe extracted by EDTA solution (r = 0.710*** and r = 0.564**). Plant Zn and Mn were also well predicted by the acid extraction. The absence of correlation for plant Cu vs. soil Cu occurred probably because of wheat concentrations almost constant, ranging from 5.0 to 8.0 mg/kg. 相似文献
7.
Mohsen Jalali Ziba Hourseresht 《Communications in Soil Science and Plant Analysis》2017,48(9):1089-1104
In the present study, a laboratory experiment was designed to compare the 0.01 M calcium chloride (CaCl2) and diethylenetriaminepentaacetic acid (DTPA) extraction methods for their ability to predict cadmium (Cd), copper (Cu), iron (Fe), Manganese (Mn), nickel (Ni), and zinc (Zn) availability and mobility in five calcareous soils. The soils were spiked with different amounts of metals (0, 50, 100, 200, and 400 mg kg?1) both in binary (Cu and Zn; Ni and Cd; Fe and Mn) and in multi-systems (Cd, Cu, Fe, Mn, Ni, and Zn) and incubated for 1 months at field capacity. In metal-spiked soils, both extraction methods showed a linear relationship of extractable to total metals for all soils. The fraction of total metals extracted by DTPA was much higher than the fraction extracted by CaCl2, which was attributed to the formation of soluble metal-complexes in the complexing extracts calculated by the Visual Minteq program. DTPA extraction method showed higher selectivity for Cu over other metals both in binary and in multi-systems. Different order of metals extractability was found in binary and multi-systems for both extraction methods. Solid/solution distribution coefficient (Kd) was calculated by the ratio of the solid phase to soil solution concentration of metals extracted by CaCl2 or DTPA extraction methods. Both in binary and in multi-systems, the average Kd (l kg?1) of metals by soils were in the order of Mn (5398) > Fe (4413) > Zn (3376) > Cu (2520) > Ni (969) > Cd (350) in the CaCl2-extractable metals and Fe (35) ≥ Ni (34) > Zn (18) > Mn (11.2) > Cu (6.3) > Cd (4) in the DTPA-extractable metals. Results showed that among the six studied metals, Cd had the lowest Kd, implying a relative higher mobility in these calcareous soils. The Visual Minteq indicated that in the CaCl2-extraction method and in both binary and multi-systems the dominant species for Cu, Mn, Ni, and Zn were Cu2+, Mn2+, Ni2+ and Zn2+, respectively, while for Cd and Fe, the dominant species were CdCl+ and Fe(OH)2+, respectively. 相似文献
8.
Fernanda Cabral Ernesto Vasconcelos Cláudia M. d. S. Cordovil 《Journal of plant nutrition》2013,36(9):1955-1966
A two‐year lysimeter experiment was conducted using winter wheat plants on two texturally contrasting soils (soil A and soil B). The main objective of this study was to evaluate the influence of increasing doses (5, 10, 15, 20, and 251 ha‐1) of solid phase from pig slurry (SP) on soil extractable copper (Cu), zinc (Zn), iron (Fe), and manganese (Mn) and on wheat micronutrients composition and uptake. As the control, a basic dressing of NPK fertilizer was applied. Results showed that increasing additions of SP significantly enhanced extractable Cu, Zn, Fe, and Mn content on the topsoil for both soils tested. In addition, a significant increase was detected for extractable Cu, Zn, and Mn content with increasing application rates of SP for subsoil A, but no significant differences were detected for subsoil B. A significant increase in the contents of Fe, Mn, and Zn in the plants as well as total uptakes were observed from increasing doses of SP. Copper content in the plants was not significantly affected. Finally, a strong pH effect was exerted in the Mn and Zn uptake by the plants. 相似文献
9.
《Communications in Soil Science and Plant Analysis》2012,43(10):1175-1189
Abstract Reclamation of sandy and calcareous desert lands in. Egypt for intensive cropping has considerable effect on the fertilizer requirement for most crops. The yield records, together with frequent visual appearances of micronutrient deficiency symptoms on economically important crops were the main reasons for investigating the status of micronutrients in these areas by means of leaf and soil analyses. Sites were selected to represent sandy and calcareous soils in newly reclaimed areas as well as loamy alluvial ones in the Nile‐Valley and Delta. Over 10000 soil and leaf samples were collectes in the last 5 years to evaluate the soil/plant fertility status within the area. The major deficiencies were found to be of Fe Mn and Zn revealed in both soil and plant analyses. Regarding soil type effects, Fe‐deficiency dominated on calcareous soil, Zn‐deficit on the sandy soils and Mn‐deficiency mostly on alluvial soils. Leguminous crops were most sensitive to Fe‐deflciency whereas cereals; especially maize and rice were most sensitive to Zn‐deficiency. It is problem that using Zn, Mn, Fe fertilizer will become a common practice in Egypt for different crops in the near future. In some west‐Delta calcareous areas, high B was found in both soils and plants. Also, Cu accumulation accurred due to the heavy use of Cu‐fungicides which may eventually become a major pollution problem. 相似文献
10.
长期施肥对潮土耕层土壤和作物籽粒微量元素动态的影响 总被引：4，自引：0，他引：4
LI Ben-Yin HUANG Shao-Min WEI Ming-Bao H. L. ZHANG SHEN A-Lin XU Jian-Ming RUAN Xin-Ling 《土壤圈》2010,20(6):725-735
Micronutrient status in soils can be affected by long-term fertilization and intensive cropping.A 19-year experiment (1990-2008) was carried out to investigate the influence of different fertilization regimes on micronutrients in an Aquic Inceptisol and maize and wheat grains in Zhengzhou,China.The results showed that soil total Cu and Zn markedly declined after 19 years with application of N fertilizer alone.Soil total Fe and Mn were significantly increased mainly due to atmospheric deposition.Applications... 相似文献
11.
Although a positive response to iron (Fe) is, usually, expected in calcareous soils; this has not been always the case; and in some instances a depressing effect has been observed. An induced micronutrient imbalance is suspected. This experiment was designed to study the effect of Fe fertilizer on the plant micronutrients. Twenty three highly calcareous soils (18–46% calcium carbonate equivalent; pH 7.7–8.4; and a wide range of extractable Fe) from southern Iran were used in an eight‐week greenhouse experiment to study the effect of Fe fertilizers on soybean [Glycine max (L.) Merr.] growth and chemical composition. The statistical design was a 23 × 3 factorial arranged in a completely randomized block with three replications. Treatments consisted of 23 soils and three levels of applied Fe (0, 10, and 20 mg Fe/kg as FeEDDHA). Uniform doses of nitrogen (N), phosphorus (P), copper (Cu), manganese (Mn), and zinc (Zn) were applied to all pots. Dry matter (DM) and micronutrients concentrations and uptakes of plant tops were determined and used as the plant responses. Application of Fe either had no significant effect on DM or even decreased it. The plant concentration and uptake of Fe increased significantly in all soils. The concentrations and uptakes of Cu and Zn did not change but those of Mn decreased significantly. The negative effect of Fe application was, therefore, attributed to the interference of Fe with Mn nutrition. The mechanism involved appears to be the restriction in Mn translocation from soil to root and/or from root to the plant tops. 相似文献
12.
Reza Ghasemi-Fasaei Abdolmajid Ronaghi Esmaeil Farrokhnejad 《Archives of Agronomy and Soil Science》2013,59(10):1171-1178
Adsorption and release are the most influential reactions controlling zinc (Zn), manganese (Mn) and copper (Cu) availability in soils. Characteristics of native Zn, Mn and Cu release by ethylenediaminetetraacetic acid (EDTA) in two calcareous soils for periods from 1 min to 24 h were studied. The pattern of Zn, Mn and Cu release from both soils fitted well with power function, Elovich and parabolic diffusion models. The magnitude and rate of release was greatest for Mn, followed by Zn and Cu, respectively. This trend suggests a higher ability of the studied soils to replenish soil solution Mn, compared with Zn and Cu. The results showed that higher Mn release in clay soil compared with sandy loam soil was considerably related to higher initial Mn release rates in the former compared with the latter. However, Cu release rates of the two soils at initial times were not significantly different. Higher Cu release in clay soil was, therefore, attributed tohigher Cu release rates at subsequent time intervals. It is assumed that the different Zn release rates of these soils were due to consistent differences in Zn release rates throughout the release periods. 相似文献
13.
14.
B.Y. Li D.M. Zhou L. Cang H.L. Zhang X.H. Fan S.W. Qin 《Soil & Tillage Research》2007,96(1-2):166-173
Micronutrient status in soils and crops can be affected by different fertilization practices during a long-term field experiment. This paper investigated the effects of different fertilization treatments on total and DTPA-extractable micronutrients in soils and micronutrients in crops after 16 year fertilization experiments in Fengqiu County, Henan Province, China. The treatments of the long-term experiment included combinations of various rates of N, P and K in addition to two rates of organic fertilizer (OF) treatments. Winter wheat and summer maize were planted annually. Soil macro- and micronutrients along with pH and organic matter (OM) were analyzed. Grains and above ground parts of both crops in the final year were harvested and analyzed for Cu, Zn, Fe and Mn. The results showed that soil Cu, Zn, Fe and Mn concentrations did not change among the different treatments to a significant level, except for a slight decrease of soil Zn in the CK (no fertilizer application) compared to the OF treatment. The DTPA-extractable soil Zn, Fe and Mn concentrations increased from 0.41 to 1.08 mg kg−1, from 10.3 to 17.7 mg kg−1, and from 9.7 to 11.8 mg kg−1, respectively, with increasing soil OM content, thus showing the importance of soil OM in micronutrient availability for crops. The NPK treatment also had higher DTPA-extractable micronutrient concentrations in soil. Deficiency of N or P resulted in a low yield but high micronutrient concentrations in crops except Cu in maize stalks. Higher available soil P significantly decreased crop micronutrients, possibly because of their precipitation as metal phosphates. Maize stalks contained higher concentrations of micronutrients than those of wheat straw, whereas wheat grain had higher micronutrients than those of corn grain. The transfer coefficients (TCs) of micronutrients from straw to grain were significantly different between winter wheat (1.63–2.52 for Cu; 2.31–3.82 for Zn; no change for Fe; 0.55–0.84 for Mn) and summer maize (0.24–0.50 for Cu; 0.50–1.21 for Zn; 0.02–0.04 for Fe; 0.07–0.10 for Mn). In conclusion, application of organic matter significantly increased the DTPA-extractable concentrations of Zn, Fe and Mn compared to the CK, grain and vegetative tissue in the CK and NK had higher micronutrient concentrations than those in other treatments. 相似文献
15.
《Communications in Soil Science and Plant Analysis》2012,43(13-14):1975-1996
Abstract A study was carried out to investigate the status of four micronutrients, iron (Fe), copper (Cu), manganese (Mn), and zinc (Zn), and five other trace elements, cobalt (Co), chromium (Cr), nickel (Ni), lead (Pb), and strontium (Sr), in paddy soils of Bangladesh. Soil samples were digested by hydrofluoric acid (HF)‐nitric acid (HNO3)‐perchloric acid (HClO4) for determination of total contents of the nine elements, while DTPA, ASI and 0.1 Mhydrochloric acid (HC1) methods were used for determination of available Fe, Cu, Mn, and Zn. Total trace element contents were found to vary with physiography on which soils are distributed. In general, Ganges Tidal Floodplain soils had the highest content, whereas terrace soils had the lower content. Among the soil properties examined, clay content had a good relation with total trace element contents in the topsoil, except for Sr. Based on the variation with physiography or clay content, the nine trace elements could be grouped into six groups: Cu, Fe and Zn, Pb, Co and Cr and Ni, Mn, Sr. According to the extractable levels of four micronutrients, Bangladesh paddy soils had the medium to optimum amounts of Fe and Cu, but were deficient sporadically in Mn and extensively in Zn. It was indicated that paddy soils of Bangladesh are yet to be polluted with heavy metals. 相似文献
16.
Concentrations of chemical elements in tree roots including heavy metals from air pollution Total concentrations of P, S, Na, K, Mg, Ca, Al, Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd and Pb were measured in roots from beech, spruce, ash, maple and a forest herb (Mercurialis perennis). The root samples were taken from a site with an acid soil type (Saure Braunerde) and from a site with calcareous soil (Rendzina). All elements except Mn, Zn and Pb (on acid soils) and Ca (on calcareous soils) showed higher concentrations in finest roots (<1 mm diameter) compared to fine roots (1–2 mm). In the case of the toxic heavy metals, this is interpreted as a consequence of reduced root uptake due to physiological processes or to organic complexing, followed by an accumulation at the root surface. Compared with aboveground plant parts, roots show accumulation of Al, Pb, Cd and Zn, indicating reduced translocation from roots to shoots. Roots from acid soil show higher concentrations of P, Mn, and Pb than in calcareous soil. The concentrations of Al and heavy metals in the roots are considered to be a consequence of the contamination of the investigated forest sites by long-range transported air pollutants, i.e. acid precipitation and deposition of heavy metals. 相似文献
17.
《Soil Science and Plant Nutrition》2013,59(6):754-759
Abstract Among micronutrient deficiencies, Fe deficiency is the most difficult nutritional disorder to prevent in the fruits of trees growing on calcareous soils. In this study, a pot experiment was carried out to evaluate the potential of co-situs application of controlled release fertilizers (CRF) in alleviating Fe deficiency and improving the growth of fruit trees growing on calcareous soil (pH 9.3). Guava (Psidium guajava L.) seedlings were used as test plants because of their sensitivity to Fe deficiency. Treatments consisted of the following: (1) broadcast application of readily soluble Fe, Zn, Cu, B and Mn fertilizers (Control) or (2) co-situs application of CRF containing N, P, K, Mg, Fe, Zn, B, Cu and Mn (Co-situs). For the Control treatment, CRF containing only N, P and K was used. Both treatments received the same amount of all nutrients. Plants were more chlorotic in young leaves under the Control treatment and the Fe content of young leaves was significantly (least significant difference [LSD0.05]) higher under the Co-situs treatment. Dry matter production of shoots under the Co-situs treatment was 5.2-fold higher than under the Control treatment, and the total accumulations of macro and micronutrients were much higher under the Co-situs treatment than the Control treatment. Total accumulations of N, P, K, Ca and Mg were 5.0, 4.1, 9.6, 3.2 and 2.2-fold higher, respectively, under the Co-situs treatment compared with the Control treatment, and Fe, Zn, Cu and Mn accumulations were 3.2, 4.1, 6.0 and 3.7-fold higher, respectively. Iron deficiency in guava seedlings was successfully alleviated by the co-situs application of controlled fertilizer, proving the high potential of this method in alleviating Fe deficiency in fruit trees growing on calcareous soils. 相似文献
18.
A survey was conducted in order to estimate micronutrient levels in plants and soils of 215 farms in Greece cultivated with sugar beet. Soils were analyzed for particle-size distribution, pH, organic carbon (C), CaCO3, and DTPA-extractable copper (Cu), zinc (Zn), iron (Fe), and manganese (Mn). Sugar beet leaves were analyzed for the same metals. Also, aboveground biomass (top), root, and raw sugar yields were recorded. DTPA-extractable Fe and Mn were above critical levels in all cases, whereas Cu and Zn were above critical levels in 49% and 24% of the soil samples, respectively. Concentrations of the four metals in plant tissue were similar or higher than the sufficiency range. Concentrations of DTPA-extractable Fe and Mn, and plant Zn and Mn, were significantly and negatively correlated with soil pH. Soil pH and DTPA-extractable Fe seemed to have a significant positive impact on root, top, and raw sugar yields. However, in all cases, less than 14% of the variance of the sugar beet parameters was explained by soil characteristics. 相似文献
19.
《Communications in Soil Science and Plant Analysis》2012,43(1):89-91
Abstract The Earlirose cultivar of rice (Oryza sativa L.) grown in calcareous Hacienda loam soil was extremely Fe deficient. The Fe deficiency was corrected by premixing 40 ppm Fe (as FeSO4) into the soil before transplanting plants. The Fe deficiency appeared to be induced by high plant levels of Cu and Mn. Addition of Zn (40 ppm as ZnSO4) intensified the Fe deficiency. The Fe addition did not overcome the effect of the Zn. BPDS (bathophenanthroline disulfonate), a chelator of Fe++, had little effect on the results. 相似文献
20.
本文对甘肃省主要农业土壤中Ｃｕ、Ｚｎ、Ｍｎ、Ｆｅ的形态及其有效性进行了研究。结果表明，供试土壤的全Ｃｕ含量范围为２２－２４ｍｇ／ｋｇ，全Ｍｎ为５４２－７７２ｍｇ／ｋｇ，全Ｆｅ为３５６８５－３８３５５ｍｇ／ｋｇ。四种元素均以灌漠土的含量最低，褐土最高。土壤中Ｃｕ、Ｚｎ、Ｍｎ、Ｆｅ的大部分以残留矿物态和氧化铁结合态存在。生物试验和统计分析表明，Ｃｕ、Ｚｎ、Ｍｎ、Ｆｅ的交换态和松结有机态对植物最为有效， 相似文献