HU Yuan-fu.Technical Effect of Optimizing Nitrogen Fertilization of Rice in Cold Region[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(11):54-57.[doi:10.11942/j.issn1002-2767.2016.11.0054]
寒地水稻优化氮素施肥技术效果
- Title:
- Technical Effect of Optimizing Nitrogen Fertilization of Rice in Cold Region
- 文章编号:
- 11-0054-04
- Keywords:
- rice; optimal nitrogen fertilizer; nitrogen fertilizer shift
- 分类号:
- S511.062
- 文献标志码:
- A
- 摘要:
- 为了提高氮肥利用率，通过设置不同的氮肥处理水平，发现氮肥后移，减少前期氮肥用量，增加穗肥的氮量，后期分蘖增加、最终收获穗数增加，水稻的中后期叶色加深，水稻孕穗结实期光合能力强，水稻结实率提高6.64百分点，千粒重提高0.02 g，实际施肥总量比常规少37.17 kg·hm-2、实际施氮总量比常规对照少7.17 kg·hm-2，而水稻地上吸收氮素量多28.18 kg·hm-2，氮肥的表观利用率高27.21百分点、实际产量增加453.4 kg·hm-2。
- Abstract:
- In order to improve the utilization rate of nitrogen fertilizer,by setting different nitrogen fertilizer levels,it was found that nitrogen fertilizer moved backward,nitrogen fertilizer decreased,the amount of nitrogen fertilizer increased,the final harvest,late tillering panicles increased,rice leaf color burned in late rice at seeding stage,photosynthetic ability was strong,rice yield increased by 6.64 percentage points,1 000 grain weight increased 0.02 g,the actual amount was 37.17 kg·hm-2 less than the conventional fertilization,the actual total nitrogen was 7.17 kg·hm-2 less than the conventional control,and rice on the nitrogen absorption amount 28.18% more than conventional fertilization,nitrogen apparent high utilization rate was 27.21 percentage points more than conventional fertilization,the actual yield increased 453.4 kg·hm-2.
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备注/Memo
收稿日期：2016-09-08