玉米茬不同处理方式对土壤耕层水分的影响  

Effect of different corn stubble treatments on soil moisture of tillage layer

作　　者：肖继兵[1] 杨久廷[1] 辛宗绪[1] 张景会[1] 孙占祥[2] 张玉龙[3] 

机构地区：[1]辽宁省水土保持研究所,辽宁朝阳122000 [2]辽宁省农业科学院,辽宁沈阳110161 [3]沈阳农业大学,辽宁沈阳110161

出　　处：《干旱地区农业研究》2009年第5期65-70,共6页Agricultural Research in the Arid Areas

基　　金：国家科技支撑计划"东北风沙半干旱区林粮结合技术集成与示范"(2006BAD29B06)

摘　　要：针对朝阳半干旱区春季十年九旱的实际情况,在秋后玉米地设置了玉米地留茬、留茬覆盖玉米秸秆、翻耕、翻耕后覆盖玉米秸秆和翻耕后覆盖地膜5种不同处理方式,探讨不同处理方式对春播前表层土壤水分的影响。测定结果表明,各处理春播前表层土壤水分含量大小顺序为翻耕后覆膜>翻耕后覆盖秸秆>留茬覆盖秸秆>翻耕无覆盖>留茬无覆盖,其中翻耕覆膜处理土壤含水率为17.03%,比留茬无覆盖处理高4.51%,比翻耕无覆盖处理高2.57%,比留茬覆盖秸秆处理高1.27%,比翻耕覆盖秸秆处理高0.66%。In view of the characteristic of spring drought occurring in nine years in a decade in Chaoyang semi-arid region, five different treatments on corn stubble after autumn, including stubble remaining without covering, stubble covered with straw, tillage without covering, tillage plus straw covering and tillage plus film covering, are designed to study the effect of each treatment on surface soil moisture before spring sowing. The results indicate that before spring sowing, the amount of soil moisture of surface layer in different treatments is in the order of tillage plus film covering 〉 tillage plus straw covering 〉 stubble covered with straw 〉 tillage without covering 〉 stubble remaining without covering, and the soil water content of tillage plus film covering is 17.03%, being 4.51,2.57,1.27 and 0.66 percentage points higher than stubble remaining, tillage without covering, stubble plus straw covering and tillage plus straw covering respectively.

关 键 词：土壤水分 留茬 翻耕 留茬覆盖秸秆 翻耕覆盖秸秆 翻耕覆膜 

分 类 号：S152.7[农业科学—土壤学]