摘要
对玉米双垄全膜覆盖沟播栽培技术条件下的降水利用、土壤蓄水、保水和供水特征进行了研究,结果表明：在15 d测定时段,双垄全膜覆盖栽培模式的0~60 cm土层平均储水量分别比全膜平铺覆盖、半膜覆盖和露地多14.7 mm、17.9 mm,29.6 mm;4种模式土壤储水量与降水量的灰色关联序为露地（0.727）〉双垄全膜覆盖（0.645）〉全膜平铺覆盖（0.641）〉半膜覆盖（0.635）,说明玉米双垄全膜覆盖集雨沟播栽培模式接纳降水的能力仅次于露地;在双垄面全膜覆盖栽培模式下,玉米的耗水系数分别比露地、半膜覆盖和全膜平铺覆盖减少35.9%、10.5%和17.1%,水分利用效率分别提高10.41、3.34和4.95 kg/（mm.hm2）。由此得出,玉米双垄面全膜沟播栽培技术可使旱作雨养农业区有限的水资源得到高效利用。
The rain water utilization, soil water storage, water conservation and water supply ability were studied under double ridges with full film coverage. The results showed that the average water storage during 15 d measure time periods under double ridges with full f：lm mulching was 14.7 mm, 17.9 mm and 29.6 mm more than that under full tiling with plastic, half coverage and no coverage respectively. The gray association order of 4 cultivation patterns was open ground（0. 727） 〉double ridges with full film mulching（0. 645） 〉 full tiling with plastic（0. 641） 〉 half coverage（0. 635）. It means that accepting rain ability of double ridges with full mulching was second only open ground. Under double ridges with full mulching, water coefficient of maize （Zea may） was 35.9 % ,10.5 % and 17.1% lower than open ground, hat under full tiling with plastic, half coverage and full tiling with plastic coverage respectively, and water utilization rate was 10.41, 3.34 and 4.95 kg/（mm·hm2） higher respectively. The promotion of planting maize under double ridges with full mulching would increase water use efficiency in the rain-fed agriculture regions.
出处
《干旱地区农业研究》
CSCD
北大核心
2009年第1期89-94,共6页
Agricultural Research in the Arid Areas
基金
农业部"旱作节水农业财政专项"〔农财发(2003)11号〕项目
关键词
双垄全膜覆盖
土壤蓄水量
灰色关联分析
玉米
水分利用率
double ridges with full film coverage
soil water storage
gray association analysis
maize
water utilization rate
