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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (3): 174-178.

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

翻压紫云英后化肥用量对稻田养分动态变化及产量效应的影响

吕玉虎 潘兹亮 王琴   

  • 收稿日期:2010-06-09 修回日期:2010-07-27 出版日期:2011-02-05 发布日期:2011-02-05
  • 基金资助:

    公益性行业（农业）科研专项经费项目，“绿肥作物生产与利用技术集成研究及示范”

Effects of Different Amount of Chemical Fertilizer Usage under Ploughing down Milk Vetch on the Yield and the Dynamics of Soil Nutrients in Rice Filed

  • Received:2010-06-09 Revised:2010-07-27 Online:2011-02-05 Published:2011-02-05

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摘要：

研究了翻压紫云英后化肥用量对稻田土壤养分状况及水稻植株N、P、K累积吸收量的影响，并对水稻产量效应进行了分析。结果表明，翻压紫云英并配施化肥增加了水稻分蘖盛期后的土壤速效氮和速效钾含量，比单施化肥能更好地满足水稻生长中后期对N、K养分的需要，到成熟期，翻压紫云英并配施化肥时水稻植株N、K累积吸收量比仅施化肥处理的高，翻压紫云英更有利于水稻籽粒的形成。在翻压紫云英22500 kg/hm2后，以施用N 132kg/hm2、P2O5 90 kg/hm2、K2O 90 kg/hm2（化肥常规用量的80%）对水稻增产效果最好，水稻产量达到9424.5 kg/hm2，比单施化肥增产5.19%，增产达显著水平。翻压紫云英后，化肥用量可以减少20%，利用紫云英作稻田绿肥，能达到增收节支、节能减排的良好效果。

关键词: 转基因食品 标识管理 安全性评价 溯源, 转基因食品 标识管理 安全性评价 溯源

Abstract:

The effects of different amount chemical fertilizer usage under ploughing down milk vetch on nutrients status in rice filed and the accumulated absorption of N, P, K in rice was studied. The influence of rice yield was analyzed too. The results showed that different chemical fertilizer amount under ploughing down milk vetch could increase the content of available N and K of soil after the peak of tillering season, and offer more N, K nutrients for rice growth and development than those of the treatment only applying chemical fertilizer during the late growing season. At the maturing stage, the accumulated absorption of N, K was higher in rice with different chemical fertilizer amount under ploughing down milk vetch than that of the treatment only applying chemical fertilizer. Ploughing down milk vetch was benefit to the formation of rice seed. Ploughing down 22500 kg/hm2 milk vetch with N 132 kg/hm2、P2O5 90 kg/hm2、K2O 90 kg/hm2 (80% of conventional dosage) was the best for rice yield. The yield could reach to 9424.5 kg/hm2, remarkably increased by 5.19% compared to the treatment just applying chemical fertilizer. Ploughing down milk vetch could reduce the amount of chemical fertilizer by 20% without the rice yield loss. Milk vetch as a kind of green manure crops of rice filed could increase the rice yield, reduce input, save energy and reduce emissions.