旱稻夏季地膜覆盖栽培的生态学效应  

A preliminary study on ecological effect of plastic film mulching on upland rice in summer

作　　者：杨艳敏[1] 刘小京[1] 孙宏勇[1] 李伟强 

机构地区：[1]中国科学院石家庄农业现代化所,石家庄050021

出　　处：《干旱地区农业研究》2000年第3期50-54,共5页Agricultural Research in the Arid Areas

基　　金："九五"国家科技攻关项目 !( 96-0 0 4 -0 1 -0 9)

摘　　要：通过旱稻夏季地膜覆盖栽培试验 ,研究了在高温季节地膜覆盖栽培的调温、保墒、活化土壤和抑草等作用 ,结果表明夏季地膜覆盖栽培 5cm～ 1 5cm地温增高 2 .6℃～0 .9℃ ,且随每日的时间有所变化 ;1 m土壤含水量提高 2 .1 6%;地膜覆盖后 ,土壤养分的转化和吸收加快 ,叶片光合速率提高 ,对杂草也有很好的抑制作用 ,地膜栽培的旱稻产量提高68.2 %。A preliminary study was conducted to study the ecological effect of plastic film mulching on upland rice in summer. Soil temperature, soil water, soil fertility was measured. Additionally, weed control, plant growth, rice yield, leaf photosynthesis were measured too. In summer with plastic mulching, 5 cm^15 cm soil temperature was raised 2.63℃~0.93℃ and varied with the time in a day, Soil water in 1 m soil profile was increased by 2.16%, Soil organic matter, N, P 2O 5 and K 2O were decreased. Plant grew well and leaf photosynthesis was increased. Because of all these effective factors, the final rice yield was increased by 68.2%.

关 键 词：旱稻 地膜覆盖 生态学效应 高温季节 

分 类 号：S511.601[农业科学—作物学] S511.604.7