干旱地区农业研究2009，Vol.27Issue(4)：196-202,7.
半干旱区秸秆覆盖量对土壤水分保蓄及作物水分利用效率的影响
Effects of different straw mulching quantity on soil water and WUE in semiarid region
摘要
Abstract
The study on the effects of different straw mulchi ng quantity (0, 4 500, 9000 and 13 500 kg/hm2) on soil water and water use eff iciency of spring maize was conducted in semiarid area of Ningxia from 2007 to 2 008. The results showed that the effects of straw mulching treatments on soil wa ter varied in different crop growth stages and soil layers. Straw mulching treat ment of 9 000 kg/hm2 had significant effect on soil water content of 0～40 cm soil layer compared with CK (P<0.05), and the soil water content increased b y 14.2%. The treatment of 13 500 kg/hm2 raised soil water content insignifi cantly compared with treatment of 9 000 kg/hm2. 9 000～13 500 kg/hm2 treatme nts could increase the yield by 16.9% (P<0.01), water use efficiency of sp ring maize increased by 4.3～5.6 kg/(mm*hm2) compared with CK (P<0.01).关键词
春玉米/秸秆覆盖量/土壤含水量/水分利用效率Key words
spring maize/straw mulching quantity/soil water con tent/water use efficiency分类
农业科技引用本文复制引用
王昕,贾志宽,韩清芳,杨保平,聂俊峰..半干旱区秸秆覆盖量对土壤水分保蓄及作物水分利用效率的影响[J].干旱地区农业研究,2009,27(4):196-202,7.基金项目
十一五国家支撑计划项目"农田集雨保水关键技术研究"(2006BAD29B03) （2006BAD29B03）
"节水共性技术研究"(2007BAD88B10) （2007BAD88B10）
