农田秸秆覆盖节水效应研究  

The water-saving effects of straw mulch in field

作　　者：周凌云[1] 周刘宗[1] 徐梦雄[1] 

机构地区：[1]中国科学院南京土壤研究所,南京210008

出　　处：《生态农业研究》1996年第3期49-52,共4页Chinese Journal of Eco-agriculture

摘　　要：周凌云,周刘宗,徐梦雄。农田秸秆覆盖节水效应研究。生态农业研究,1996,4(3):49～52。 利用秸秆覆盖农田,是减少棵间无效蒸发量、提高水资源利用的有效措施。在封丘3年试验结果表明,采用秸秆覆盖麦田可有效地降低耗水系数8.1％～23.2％,覆盖后减少棵间蒸发量26.3％,节约灌溉水量270m^3/hm^2。其节水机理主要是覆盖麦田可产生调节地温,蓄水保墒,提高了田间水的利用率。Using straw to cover wheat field is an effective measure to reduce uneffective evaporation from interplant and increH.sp-:he untilization efficiency of water resources.Results from three years' experiments showed Thai wr.ier consumption coefficient was reduced by 8.1 to 23.2% and evaporation from soil surface was reduced by 26.3% by straw mulch.The total water saving amounted to 270m3/hm2.The mechanism of straw mulch in water-saving is that straw mulch can adjust soil temperature,conserve soil moisture,inhibit weed growth and improve the utilizaton efficiency of soil water.

关 键 词：秸秆覆盖 节水 农田 效应 

分 类 号：S341.9[农业科学—作物栽培与耕作技术] S157.4[农业科学—农艺学]