Research on Increase Yield Mechanisms of Coated Slow-Release Fertilizers and N utilization Ratio by Tracing

WANG Yan; WANG Xiao-bo; WANG Xiao-jing; ZHANG Yuan; SU Xiao-qian

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Research on Increase Yield Mechanisms of Coated Slow-Release Fertilizers and N utilization Ratio by Tracing

更新时间：2024-11-07

- Research on Increase Yield Mechanisms of Coated Slow-Release Fertilizers and N utilization Ratio by Tracing
- Vol. 20, Issue 5, Pages: 109-111(2006)
- 作者机构：
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- DOI：
  CLC： S145.6
- Published：2006
- 稿件说明：
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WANG Yan, WANG Xiao-bo, WANG Xiao-jing, et al. Research on Increase Yield Mechanisms of Coated Slow-Release Fertilizers and N utilization Ratio by Tracing[J]. 2006, 20(5): 109-111.
DOI：

WANG Yan, WANG Xiao-bo, WANG Xiao-jing, et al. Research on Increase Yield Mechanisms of Coated Slow-Release Fertilizers and N utilization Ratio by Tracing[J]. 2006, 20(5): 109-111. DOI：

摘要

把有^15N标记的尿素用自选的3种材料（WSU，FSU，GZCU）包膜制得包膜缓释肥后，进行了玉米微区试验。结果表明：（1）GZCU能较好的控制N素养分的释放，使GZCU处理土壤中速效N含量在玉米整个生育期保持较高状态，在玉米生长的后期仍能提供充足的养分，促进了玉米对N素的吸收、累积。（2）包膜肥处理与尿素相比，产量增加5．5％～21．3％，GZCU，FSU的增幅达显著水平，它们之间的差异也显著。（3）在各肥料一次基施的条件下，包膜肥的N素利用率比尿素高出4．5～19．3个百分点，GZCU、FSU之间；WSU、FSU之间的差异都达显著水平，WSU与CK2差异不明显。GZCU的N素当季利用率高达53．8％，可有效减少N的损失。

Abstract

Coated slow-release fertilizers were made by coated urea with ~(15)N using three kind of materials(WSU

FSU

GZCU) in maize.The results showed that GZCU greatly controlled the release of N in soil

the content of available-N in GZCU soil was higher in corn entire reproductive period. Sufficient nutrient could be provided in later stager of corn and could meet the need for N absorption and accumulation.Compared with urea

the output of CSFs increased by 5.5%~21.3%.The difference of economic yield between GZCU

FSU treatment and CK treatment is significant.In condition of all fertilizers were basal applied

N use ratio of CSFs is 4.5~19.3 percentage points higher than only supplied by urea.The difference of N utilization ratio between GZCU treatment and FSU treatment is significant.The same to WSU and FSU

but the difference between WSU and CK2 is not significant.

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