免耕秸秆覆盖对旱作农田土壤水分的影响

被引：101

作者：

李玲玲

黄高宝

张仁陟

晋小军

Guangdi LI

Kwong Yin CHAN

机构：

[1] 甘肃农业大学农学院

[2] 甘肃农业大学资源与环境学院

[3] NSW Department of Primary Industry

[4] Wagga Wagga

[5] NSW Australia

来源：

水土保持学报 | 2005年 / 05期

关键词：

旱农; 免耕; 秸秆覆盖; 土壤水分;

D O I：

10.13870/j.cnki.stbcxb.2005.05.023

中图分类号：

S152.7 [土壤水分];

学科分类号：

摘要：

通过20012004年的田间试验研究了免耕秸秆覆盖旱作农田的土壤水分效应。结果表明,免耕秸秆覆盖对表层土壤水分含量影响较大,在作物播种期可以减少表层水分蒸发,显著增加表层土壤含水量,但随着生育进程的推进,秸秆覆盖的抑蒸效果逐渐减弱。免耕秸秆覆盖对各个时期0200 cm土壤剖面上水分总量的影响不大,但年际间变化较大。采用免耕秸秆覆盖可以提高小麦-豌豆轮作系统作物产量以及水分利用效率、促进农田生态系统的良性循环,持续提高土壤肥力。

引用

页码：96 / 98+118

页数：4

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