秸秆覆盖的土壤温度效应及其对玉米生长的影响  

Effects of Straw Mulching on Ground Temperature and Growth Relationship of Maize

作　　者：李月兴[1] 张宝丽 魏永霞[1] 

机构地区：[1]东北农业大学水利与建筑学院,哈尔滨150030 [2]黑龙江省北安市红星农场水务局,黑龙江北安164022

出　　处：《灌溉排水学报》2011年第2期82-85,共4页Journal of Irrigation and Drainage

基　　金：黑龙江省高校节水农业重点实验室建设基金;国家科技支撑计划项目(2007BAD88B01);黑龙江省重点科技攻关项目(GB06B106-3);东北农业大学科技创新团队项目(CXT003-2-3)

摘　　要：针对黑龙江西部风沙土区气温偏低影响玉米生长的问题,在黑龙江省杜蒙县进行了免耕秸秆覆盖研究。结果表明,秸秆覆盖处理较对照表现为白天降温晚上增温的效应,增温效果与土壤深度呈抛物线形,15-20 cm增温效果最好。整个生育期表现为拔节期前降温,拔节后增温的效应。前期降温影响大于后期增温影响,玉米各生育期生物性状均差于对照,说明该地区秸秆覆盖处理对玉米生长有不利影响。Lower temperature was unfavorable to the maize in western aeolian sandy soil area of Heilongjiang Province.In order to improve this problem,no-till with straw cover was tested in Dumeng County Heilongjian Province.The results showed that compared with conventional tillage,straw mulching could make ground temperature higher during the day and lower at night.The warming effect assumed a change of parabola curve under different soil depth,at the depth of 15 to 20 cm,it had a greatest warming effect.Before the maize jointing stage straw mulching had warming effect,and after this stage,it had cooling effect,and the cooling effect was greater than the warming effect,so the biological character of maize was worse than conventional tillage in every stage.In a word,straw mulching had a bad influence of maize in this area.

关 键 词：黑龙江西部 风沙土 坡耕地 秸秆覆盖 地温 生物性状 

分 类 号：S513[农业科学—作物学]