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1.
Jingying Jing Julie T. Christensen Peter Srensen Bent T. Christensen Gitte H. Rubk 《Soil Use and Management》2019,35(2):323-333
A better appraisal of the plant availability of soil phosphorus (P) added with animal manure is crucial to alleviate environmental impacts from over‐application of P. This study compares the availability of P to maize in the Askov long‐term experiments using unmanured plots and plots receiving corresponding rates of nitrogen (N), P and potassium (K) in mineral fertilizers or manure. Total‐P and water extractable P (Pw) in soil, and plant height, dry weight, P concentration and P uptake were determined in early August. Final yields were determined in late October. Soil Pw was similar for plots receiving corresponding rates of P in mineral fertilizer or manure form. With a strong relationship between Pw, and maize growth and final yields, Pw was a reliable indicator of P availability to maize. Plant dry weight, P concentration and P uptake in early August were 23%, 8% and 31% higher, respectively, for maize grown on soil receiving manure compared with mineral fertilizer, while final maize yield in late October was 13% higher. Plant height and dry weight determined in early August suggested that maize development at this growth stage defined final maize yield. We conclude that the availability of P was similar after long‐term application of corresponding rates of P in animal manure and mineral fertilizers, and that animal manure improves the growth of maize compared to mineral fertilizers. This is ascribed to micronutrients and residual N effects from previous additions of manure. 相似文献
2.
为探究耕作和施肥方式对西北半干旱区饲用玉米(Zea may L.)土壤水分和产量的影响,以饲用玉米陇饲1号为材料,设置传统旋耕、立式深旋耕2种耕作方式以及单施化肥、有机肥替代化肥2种施肥方式组合,共4个处理,研究不同的耕作和施肥方式对饲用玉米土壤贮水量、花前花后耗水量、单株鲜重和干重以及产量的影响。结果表明,与传统旋耕相比,立式深旋耕能够降低饲用玉米0~300 cm土层土壤贮水量,提高花前耗水量,降低花后耗水量,增加生育期总耗水量,而有机肥替代化肥能够降低立式深旋耕方式下土壤总耗水量;立式深旋耕使成熟期单株干重增加1.3%~10.6%,单株鲜重增加4.9%~21.9%,而且不同程度增加了饲用玉米株高、穗长、穗粗、行粒数、百粒重、双穗率,降低了秃顶长,以上指标的变化均有利于高产试验形成。3年试验中立式深旋耕化肥处理较其他处理的籽粒产量增加1.8%~38.6%,丰水年生物量增加1.2%~15.1%,立式深旋耕有机肥处理较其他处理提高了干旱年生物量4.9%~21.9%、籽粒产量水分利用效率6.3%~34.8%、生物量水分利用效率7.1%~21.5%。综上,立式深旋耕能够改善作物生长土壤环境,有利于饲用玉米对土壤水分的吸收以及干物质量的积累,其组合化肥处理可以增加饲用玉米籽粒产量和丰水年生物量,组合有机肥替代处理可增加干旱年饲用玉米生物量和水分利用效率。本研究为西北半干旱区饲用玉米高产高效可持续生产提供了理论依据。 相似文献
3.
低磷土壤接种菌根真菌和解磷细菌对大田玉米生长和磷吸收的影响 总被引:2,自引:0,他引:2
丛枝菌根真菌(Arbuscular mycorrhizal fungi,AMF)能与多数陆生植物共生,促进植物吸收养分尤其是磷。解磷细菌(Phosphate-solubilizing bacteria,PSB)可以活化土壤中难溶性无机磷和有机磷。本研究采用苯菌灵对田间低磷土壤中土著AM真菌进行灭菌,并接种外源AM真菌(Glomusversiforme,G.v)和PSB(Pseudomonassp.),研究AM真菌和PSB接种对不同生育期玉米生长、磷养分吸收和产量的影响。结果表明,施用苯菌灵能够有效地抑制土著AM真菌对玉米根系的侵染,未施用苯菌灵处理中土著AM真菌促进了玉米前期和收获期的生长,提高了玉米吸磷量;接种Pseudomonas sp.促进了玉米六叶期根系的生长;接种外源AM真菌G.v促进了玉米六叶期和收获期地上部的生长,但降低了玉米产量。双接种Pseudomonas sp.和G.v对玉米生长、吸磷量和产量未表现出显著的协同效应。 相似文献
4.
DCPTA和ETH复配剂对玉米茎秆力学特性及籽粒产量的影响 总被引:3,自引:0,他引:3
为探究植物生长调节剂对玉米茎秆力学特性的影响以及与产量的关系,以东农253为试材,在玉米9叶期喷施2种外源物质:玉黄金、自配的DCPTA和ETH复配剂(代号KP),以喷施清水为对照(CK)。喷施处理后,分别在玉米抽雄前10 d、抽雄期、灌浆初期、乳熟期和完熟期取其茎秆研究力学特性,并在收获期测产。结果表明,与CK相比,喷施KP和玉黄金后,株高分别下降8.87%和6.65%,穗位高分别下降17.79%和4.04%,扁率最高下降45.86%和15.86%;茎秆横折强度、穿刺强度、单位节间长度干物重、节间横截面积及皮厚最高分别提高150.17%、103.56%、215.79%、85.03%、110.48%和115.46%、56.44%、53.33%、76.19%、27.41%。收获期玉黄金处理下籽粒水分含量较CK显著下降4.97%。KP和玉黄金处理下的产量较CK增加9.23%和5.78%。相关性分析表明,植物生长复配剂处理后茎秆的皮厚、穿刺强度、横折强度、横截面积、单位节间长度干物重和田间致倒伏推力与产量呈正相关;株高、穗位高和扁率与产量呈负相关。由此可见,植物生长复配剂可以提高玉米茎秆强度以及籽粒产量。本研究结果为黑龙江玉米化控高效栽培提供了理论依据。 相似文献
5.
保水剂与氮磷肥配施对玉米生长及养分吸收的影响 总被引:3,自引:0,他引:3
以夏玉米为研究对象,采用避雨桶栽试验方法精确控制水肥条件,研究保水剂(SAP)与5种氮磷肥配比(N∶P分别为1∶4,2∶3,1∶1,3∶2,4∶1)模式对土壤肥力水平、玉米植株生长及其养分吸收利用的效应。结果表明,保水剂与氮磷肥均衡施用(N∶P为1∶1)能够促进玉米植株的生长及对养分的吸收利用,生育期内平均株高、叶面积较其他处理分别提高了3.36%~7.19%,5.36%~29.26%;干物质积累与植株氮、磷累积量较其他处理分别提高了13.79%~27.61%,15.91%~32.47%,18.66%~33.75%;同时与未施保水剂处理相比,生育期内土壤平均无机氮含量减少5.42%,有效磷含量提高3.55%;在本试验条件下,施用SAP 1.68g/pot、N 2.89g/pot、P 2.89g/pot可得到最大玉米产量113.93g/pot,收获时产量较其他处理提高了18.69%~30.94%。试验结果为华北地区应用保水剂条件下的夏玉米氮磷肥施用配比提供了参考。 相似文献
6.
B.R. Sharma 《Soil & Tillage Research》1985,6(1):69-77
Irrigated green forage production under reduced tillage is thwarted by the failure to obtain adequate N fertilization. Forage accumulation, yield and nitrogen response in relation to tillage and N application were studied for two years during 1980–1982. Forage accumulation, plant height and final forage yield were significantly affected under minimum tillage (T1). However, plant growth and green and dry forage yields were comparable under reduced (T2) and conventional (T3) tillage. Reduction in yield under T1 was associated with restricted root growth and high soil strength and bulk density in the surface and subsurface layers. The optimum dose of N for T1, T2 and T3 was calculated to be 107, 120 and 113 kg N ha?1 and the estimated dry matter yield for these rates of N under each of the three tillage systems was 6.6, 9.1 and 9.5 t ha?1, respectively. The interaction between different tillage systems and N application rates for green and dry matter production was not significant. 相似文献
7.
农牧交错带老芒麦的优化灌溉及对产量的影响 总被引:2,自引:1,他引:1
为了定量研究关键生育期灌溉和冬灌对老芒麦生产的作用,该文通过2005.10~2007.10在河北坝上地区田间定位实测的土壤水分、株高、叶面积指数、生物量和降水资料,分析了不灌溉、冬灌、关键生育期灌溉和冬灌结合关键生育期灌溉4个处理对老芒麦生长发育和产量的影响。结果表明:老芒麦的再生草生长缓慢,灌溉主要是影响了头茬草的生长。关键生育期灌溉能显著促进头茬草的生长发育,头茬草产量达4500kg/hm2以上,2a试验期间分别比对照处理提高104%和391%;冬灌使老芒麦返青期提前1周左右,使头茬草的产量分别提高53%和87%;而共同采用此两种灌溉的处理与单独关键生育期灌溉处理相比增产效果不明显。因此,在农牧交错地区,关键生育期灌溉是值得推荐的灌溉制度。另外,该文结果表明地上部生物量和叶面积指数均随植株高度呈线性增加,为老芒麦生物量和叶面积指数的模拟提供了依据。 相似文献
8.
R. Alonso Ferro I. Brichette G. Evgenidis Ch. Karamaligkas J. Moreno-González 《Genetic Resources and Crop Evolution》2007,54(2):295-308
An European maize (Zea mays L.) landrace core collection (EMLCC) was formed with samples from several countries. Evaluation of the EMLCC may contribute
to broad the genetic base of maize breeding programs. The objective of this study was to assess the variability of EMLCC under
low nitrogen (N) in relation to high N input. Eighty-five landraces of the EMLCC, grouped in four maturity groups, and three
check hybrids were evaluated for response to low (0 kg ha−1) and high (150 kg ha−1) N in Spain and Greece. Five plant size traits (plant height, ear height, leaf length, leaf width and leaf area index), two
grain traits (1000-kernel weight and grain yield), and two agronomic traits [growing degree units (GDU) and lodging] were
studied. Overall means of plant size and grain traits increased when genotypes were grown at 150-N relative to 0-N input.
The relative increase for grain traits was smaller in landraces than in hybrids. This suggests that landraces had lower grain
yield response to N supply compared to hybrids. Linear regressions of plant size traits on GDU indicated that vegetative development
was primarily associated with flowering lateness. The maturity group was the main source of variation for all traits. Landrace
variability within maturity groups was significant for all traits across environments, despite significant landrace × environment
interactions. Estimates of genetic and genotype × environment variances, and heritabilities at both high and low N inputs
were not significantly different from each other. However estimates were generally larger at high N. Genetic and phenotypic
correlation coefficients between the two N levels were very high for all traits. 相似文献
9.
磷素营养对青饲玉米产量品质形成与肥水利用效果的影响 总被引:2,自引:0,他引:2
在华北农牧交错区旱滩地条件下,以饲用玉米白马牙为试验材料,研究了磷肥不同施用量对青饲玉米产量品质形成与肥水利用效果的影响。结果表明,施磷使饲用玉米的生物产量增产10.5 %~25.1 %;显著促进了玉米植株氮素和磷素的吸收,使植株比不施磷分别多吸收氮素26.03~51.10 kg/hm2和磷素8.63~28.95 kg/hm2;植株粗蛋白、粗脂肪和粗纤维的含量随施磷量增加而显著增加;粗蛋白和粗脂肪的产量也增加显著,增幅分别为9.26 %~37.82 %和14.95 %~33.33 %。试验结果还表明,施磷比不施磷显著提高了青饲玉米的水分利用效率,增幅为10.44%~16.77%, 相当于多供水27.51~47.36 mm。因此,施用磷肥是提高饲用玉米饲草产量、营养品质和肥水利用效果的有效技术手段。 相似文献
10.
Timely and fitting nitrogen (N) application decreases costs and pollution risk in maize cultivation. To explore the accumulation and remobilization of dry matter (DM), N, phosphorus (P), and potassium (K) in waxy maize under various N topdressings (0?kg ha?1, LN; 150?kg ha?1, MN; 300?kg ha?1, HN) at the jointing stage, a field trial involving two waxy maize varieties (Suyunuo 5 and Yunuo 7) was conducted in 2013–2016. The highest grain yield was obtained under MN mainly due to the highest grain numbers and grain weight. The increase in grain yield under MN was mainly due to the high DM accumulation post-silking, as well as high N, P, and K accumulation and remobilization pre-silking. Generally, the plants had high harvest index (HI) of DM (N, P, and K), partial N fertilizer productivity, and moderate N utilization efficiency (NUE) under MN. 相似文献
11.
施肥位置与杂草管理对间作玉米、马铃薯生长和产量的影响 总被引:1,自引:0,他引:1
【目的】施肥和除草是农业生产中两大重要的管理措施。近年来,施肥位置作为一种精准施肥措施越来越引起关注,本研究调查了施肥位置与杂草防控在玉米、马铃薯间作中对作物生长和产量的影响。【方法】采用2∶2间作行比,进行了玉米、马铃薯间作大田试验。杂草管理设除草和不除草,施肥位置处理包括:均匀施肥(HF)、种间行施肥(TERF)和种内行施肥(TRAF),共6个处理,每个处理3次重复。调查了间作玉米、马铃薯的株高、生物量、根系总生物量和产量,以及杂草生物量。【结果】施肥位置和杂草管理对玉米产量、生物量和株高均有显著影响,且存在显著的交互效应(产量P <0.001、生物量P=0.002、株高P=0.007)。相比于均匀施肥,在不除草情况下,种间行和种内行施肥均显著提高了玉米的产量、生物量和株高。而在除草情况下,种内行施肥显著提高了玉米的产量和生物量,种间行施肥仅显著增加了玉米的株高。除草对马铃薯株高无显著影响(P=0.494),但显著提高了马铃薯产量和生物量(P <0.001)。施肥位置对马铃薯产量(P=0.114)、生物量(P=0.580)和株高(P=0.772)均无显著影响。在均匀施肥和种内行施肥下,除草显著提高根系总生物量(P <0.001),但在种间行施肥下则无显著影响。不论除草与否,与均匀施肥相比,种内行施肥显著提高了玉米、马铃薯的根系总生物量(P <0.001)。施肥位置(P=0.001)和生长位置(P <0.001)均对杂草生物量有显著影响。与均匀施肥相比,种内行施肥显著降低种间行和马铃薯种内行的杂草生物量,而种间行施肥对种间行杂草生物量无显著影响,但显著降低两种作物的种内行杂草生物量。【结论】在玉米、马铃薯间作体系中,种内行施肥结合除草,可显著促进玉米和马铃薯根系发育,抑制杂草生物量,进而提高产量及肥料施用效果。 相似文献
12.
聚氨酯包膜和喷涂诱抗剂提高滨海盐化潮土玉米产量和磷肥利用率的协同效应 总被引:1,自引:0,他引:1
13.
施氮对春玉米氮素利用及农田氮素平衡的影响 总被引:25,自引:8,他引:17
田间试验研究了玉米对不同土壤氮素供应水平下作物氮素吸收利用、土壤氮素供应以及农田氮素平衡的影响。结果表明,玉米产量随施氮量的增加而显著提高,当施氮量高于N 240 kg/hm2时,产量有减少趋势;氮素当季利用率随施氮量的增加逐渐降低。土壤中硝态氮含量在玉米整个生育时期呈现先迅速下降后缓慢升高的趋势;玉米成熟期,施氮处理的各层土壤中硝态氮含量显著高于不施氮处理,各层硝态氮含量基本随施氮量的增加而升高。适量施氮促进玉米对氮素的吸收和利用,进而提高玉米生物量和产量;过量施氮导致硝态氮在土壤中大量累积,提高了硝态氮淋溶风险。施氮处理显著提高了收获后土壤中残留无机氮(Nmin),土壤残留Nmin随施氮量的增加而增加;当施氮量高于N 240 kg/hm2时,残留Nmin有下降趋势。氮素表观损失随施氮量的增加而增加。在本试验条件下,综合产量、氮肥利用率和土壤硝态氮累积情况考虑,合理施氮量应控制在N 1802~40 kg/hm2左右。 相似文献
14.
Abstract The vigour and size of rice seedlings in the nursery are generally correlated with final grain yield. The present study examined the possibility that increasing seed phosphorus (P) concentration would stimulate early growth of rice seedlings and therefore would have the potential to increase rice yield. Rice seeds with a uniform size and three levels of P concentration (0.115, 0.173, and 0.240% on a dry weight basis) were sown in pots on a P deficient soil with three levels of P supply (0, 7.75, and 38.8 mg P kg?1 soil) to investigate their effect on root and shoot dry weight and P accumulation at three harvest times, 10, 20, and 30 d after sowing (DAS). The effect of seed P concentration on plant growth was greatest at a low soil P concentration and it was less pronounced with increasing soil P concentration and with time at all levels of soil P. At 10 DAS, shoot dry weight was 15% higher at a high seed P concentration (0.240%) (p < O.O1) than at a low seed P concentration (0.115%) at each level of soil P supply whereas at subsequent harvests (20 and 30 DAS) the effect of seed P concentration was observed only when the soil P supply was deficient. In contrast with its effects on shoot dry weight, high seed P concentration increased root dry weight only at the latest harvest (30 DAS). The fact that high seed P increased P concentrations in shoot tips, and in roots at 10 DAS suggests that improved P nutrition of seedlings in the first 10 DAS may be the mechanism by which high seed P concentration stimulates early growth, especially in soils with low P concentration. Sowing rice seed with high P concentration may be beneficial for increasing farmer's rice yields, in P deficient soil, and requires further field investigations. 相似文献
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16.
黄土高原不同玉米-大豆间作模式对玉米生长发育的影响 总被引:2,自引:0,他引:2
以玉米品种(郑单958,豫玉22)和大豆品种(中黄24,中黄13)为材料进行田间试验,在单作和间作两种模式(间作比例分别为2:2,2:4)下研究了黄土塬区不同玉米-大豆间作模式对玉米生长发育的影响。研究结果表明,郑单958分别与大豆两个品种间作,玉米叶片叶绿素相对含量、单株叶面积、茎粗和干物质积累量从大喇叭口期开始均高于单作,株高在生育后期表现为间作高于单作。豫玉22分别与大豆两个品种间作,玉米叶片叶绿素相对含量和茎粗从大喇叭口期开始高于单作,干物质积累量从吐丝期开始高于单作,单株叶面积在吐丝期显著高于单作,株高在生育后期表现为间作低于单作。间作下的郑单958干物质积累量在生育后期高于豫玉22,更有利于增产。在所选的玉米和大豆间作模式中,郑单958和中黄24以2:4间作是黄土塬区对玉米增产更为有利的间作模式。 相似文献
17.
18.
E. Alvarez‐Sánchez J. D. Etchevers J. Ortiz R. Núñez V. Volke L. Tijerina 《Journal of plant nutrition》2013,36(1):205-217
Potato (Solatium tuberosum) generally requires high amounts of phosphate fertilizer to reach economically acceptable yields, particularly in soils originating from volcanic ash. This is a consequence of the potato plants low root density and the slow soil diffusion rate of phosphorus (P) in these soils. Our objective was to evaluate the effect of P rates on tuber yield, biomass production, and distribution, biomass P accumulation and concentration, and P distribution in potato cv. Mexiquense. The experiment was carried out in an Andisol (7.8 μg g‐1 Olsen‐P) located at the east of Valle de México. Fertilization rates were 0, 18,41,46,69,78,90,106,113,135,150,163, and 207 kg ha‐1 P, from ordinary superphosphate. Top growth and root biomass, tuber yield, P percentage and P accumulation in different plant parts were measured at harvest. Minimum and maximum average tuber yields were 8.4 and 18.0 Mg ha‐1; the plants absorbed 5.8 and 11.8 kg ha‐1 P, corresponding to 0 (control) and 207 kg ha‐1 P, respectively. Phosphorus fertilization had little influence on plant P concentration, where average concentrations in tuber and top growth were 0.20 and 0.24 % P, respectively. By contrast, P accumulation increased with increasing P rates, but P distribution between tuber and top growth was dependent on the amount of P applied. The control treatment showed approximately 1:1 distribution of P between top growth and tuber, but as P rate increased, top growth P decreased and tuber P increased. When applying the highest P rate, 36% of P accumulated in the top growth and 64 % in the tuber. The information obtained will permit decisions on the correct use of phosphate fertilizer for potato in Andisols of the Valle de Mexico. 相似文献
19.
Basmah M. Alharbi Abeer A. Mahmoud Hussein A. H. Said-Al Ahl 《Journal of plant nutrition》2013,36(18):2395-2405
AbstractA field experiment was conducted on three cultivars (Italian Giant, Italian Plain, and Local) of parsley to compare plant growth, herb fresh weight, and essential oil (EO) content, yield and composition at three harvest times (Day 1, 47, and 91) in response to phosphorus (P) application rates (0, 12, 24, and 36?kg ha?1). Repeated measures analysis revealed that the ideal P rate for the growth of parsley and its EO yield is 24?kg ha?1; whereas the second harvest gives the highest height and weight; and the third harvest gives the highest EO content and yield. At all harvests, the highest EO content was obtained from Italian Giant fertilized with 36?kg ha?1 P. β-myrcene, 1,3,8-p-menthatriene, β-phellandrene, and myristcin were the major compounds in all three cultivars, but their ideal P fertilization and harvest time varied with cultivar. This study showed biomass, EO content and yield, and the accumulation of EO constituents of parsley cultivars are influenced by P application and harvest date in different ways. 相似文献
20.
东北风沙半干旱区雨水资源跨时调控对玉米生长发育及产量的影响 总被引:1,自引:0,他引:1
针对东北风沙半干旱地区春旱严重、降雨资源年内分布不均的气候特点,在秋收后、霜冻之前进行灭茬覆膜处理,对旱地雨水资源跨时调节;通过对翌年春季土壤含水量、玉米生长状况及产量的调查结果表明,秋覆膜处理的耕层土壤含水量比未覆膜处理高出65%,播种14天后玉米出苗率达到88%,抽穗期玉米株高比未覆膜处理高35cm、径粗增加0.43cm,秋收时玉米穗重比未覆膜处理提高了50.6%。 相似文献