Research on Rice Cultivation Under No-Tillage with Different Straw Weight of Wheat Return Field in Chengdu Plain

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Research on Rice Cultivation Under No-Tillage with Different Straw Weight of Wheat Return Field in Chengdu Plain

更新时间：2024-11-07

- Research on Rice Cultivation Under No-Tillage with Different Straw Weight of Wheat Return Field in Chengdu Plain
- Issue 5, Pages: 171-174(2006)
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- Published：2006
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Research on Rice Cultivation Under No-Tillage with Different Straw Weight of Wheat Return Field in Chengdu Plain[J]. 2006, (5): 171-174.
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Research on Rice Cultivation Under No-Tillage with Different Straw Weight of Wheat Return Field in Chengdu Plain[J]. 2006, (5): 171-174. DOI：

摘要

在成都平原麦收后围绕免耕麦秸覆盖还田栽种水稻的产量效应进行了研究

结果表明

(1)免耕处理较传统耕作水稻显著增产

主要是显著增加了单位面积有效穗数;(2)免耕麦秸覆盖还田后

水稻产量增加

秸秆还田量与产量的关系符合多项式y=7238.6 0.0117x 2.12×10-5x2-1.49×10-9x3(R=0.988**)

理论上还田麦秸以10 089 kg/hm2时水稻产量最高

此后开始下降;(3)与传统耕作比较

在水稻生长期

免耕明显加重了杂草的发生

但通过秸秆覆盖后可减少杂草发生

且表现出随秸秆还田量增加杂草量明显减少的趋势;在水稻收获后的休闲期

免耕表现出有抑制杂草发生的作用

且这种效果随着秸秆还田的增加而增强。

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