覆盖免耕夏玉米耗水特性的研究  

Water Consumption Characteristics for Summer Corn Under Under No-Tillage With Mulch

作　　者：张海林[1] 陈阜[1] 秦耀东[2] 朱文珊[1] 

机构地区：[1]中国农业大学作物学院 [2]中国农业大学资源与环境学院

出　　处：《农业工程学报》2002年第2期36-40,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：中国科学院禹城试验站开放课题

摘　　要：以无覆盖翻耕、无覆盖铁茬等常规耕作为对照 ,对覆盖免耕夏玉米的耗水特性进行了研究。结果表明耕作并没有大幅度增加或者减少夏玉米的耗水量 ,不同耕法夏玉米耗水量差异不大 ;同翻耕、铁茬等相比 ,覆盖免耕夏玉米耗水在时间和空间分配上有所改变 ,即覆盖免耕夏玉米前期耗水少 ,后期耗水量增加 ,蒸散量加大 ,而且覆盖免耕有效地减少土壤棵间蒸发 ,却增加了作物的蒸腾量 ,变非生产性耗水为有效耗水 。Taking conventional tillage and direct drilling without mulch as CK, this paper discussed water consumption characteristics of summer corn under no tillage with mulch. Results show that water consumption with less differences among the treatments. Tillage did not increase or reduce water consumption of summer corn too much. Compared with conventional tillage and direct drilling, water use of summer corn under no tillage with mulch varied in time and space scale, i.e., no tillage with mulch reduced water use in summer corn and increased water consumption in late phase; and decreased soil evaporation and increased corn's transpiration, which increase summer corn yield and water use efficiency.

关 键 词：免耕 覆盖 夏玉米 耗水特性 

分 类 号：S513[农业科学—作物学] S606.1