秸杆覆盖保护耕作法土壤水分和温度变化及玉米产量效应  

Effect of Stock Mulch Conservation Method on Soil Moisture,Soil Temperature and Corn Yield

作　　者：徐福利[1] 梁银丽[1] 汪有科[1] 袁彦云[1] 

机构地区：[1]中国科学院水利部西北农林科技大学水土保持研究所,陕西杨凌712100

出　　处：《土壤通报》2006年第4期648-650,共3页Chinese Journal of Soil Science

基　　金：国家高技术研究发展(863计划)项目(2002AA6Z3211)资助

摘　　要：通过田间试验研究了秸秆覆盖和不同机具播种对土壤水分和土壤温度的影响以及玉米的产量效应。秸秆覆盖在休闲和种植玉米方式下都可增加土壤水分蓄储能力,有利于自然降水和灌溉水的高效利用,单纯靠休闲来保蓄水分在半湿润渠灌区水分蓄储能力较差,采用秸秆覆盖保护耕作法保墒更为有效。大型拖拉机播种玉米比小型拖拉机播种玉米对土壤水分的蓄储能力强,采用小型拖拉机播种的玉米产量增加了5.1%,采用大型拖拉机播种的玉米产量增加了9.1%。The effect of stock mulching conservation and machine cultivation on soil moisture and temperature as well as corn yield was studied at the field. The results showed that the stock mulch under both fallow and planting corn conditions stored more water during corn growth period and improved the utilization rate of rainfall and irrigation water at this semi-humid channel irrigation area. The soil moisture was less with fallow than planting corn in semi-humid channel irrigation area. Planting corn with big tractor at the stock mulch condition, the storage ability of soil moisture was higher than that of hand tractor. The yield increased to 9. 1% with big tractor and 5.1% with hand tractor.

关 键 词：半湿润渠灌区 土壤水分 温度 秸杆覆盖 

分 类 号：S152.7[农业科学—土壤学]