摘要
在绵阳旱区的盐亭县,对夏玉米用不同覆盖物进行抗旱试验,结果表明:地膜覆盖使土壤温度和土壤水分提高,秸秆和壳类覆盖使土壤温度降低和土壤水分提高;覆盖物对玉米产量的增加作用是地膜>小麦秸秆>水稻秸秆>玉米秸秆>小麦壳>菜子壳。但从经济效益和生态效益分析,小麦秸秆是最好的玉米抗旱覆盖物。
A trial of mulching with different materials for drought resistance in summer-sowed corn cultivation was carried out in Yanting County, a drought area of Mianyang, Sichuan. The result showed that mulching with plastic fihn could increase soil temperature and water content, while mulching with crop straws and shells could decrease soil temperature and increase water content, and the effects of mulching materials on raising corn yields were plastic film〉wheat straw 〉 rice straw 〉corn straw〉 wheat shell 〉 rapeseed shell. If economic and ecological benefits are considered, wheat straw is the best mulching material for drought resistance in corn cultivation.
出处
《干旱地区农业研究》
CSCD
北大核心
2007年第5期52-55,共4页
Agricultural Research in the Arid Areas
基金
西南科技大学农科研究基金(校农金2004-07)
关键词
覆盖物
玉米
抗旱
效果
mulching material
corn
drought resistance
effect
