地膜玉米是陕北梯田粮食高产的关键措施

Plastic film covering is the key measure for high yield of corn in terraced land in north Shaanxi

3年连续试验和生产实际证明 :新修梯田地膜玉米较露地玉米增产 1 9.4%～58.3 % ,水分利用效率提高 2 3 .8% ,并且为秸秆还田和养殖业的发展创造了条件 ;推广地膜玉米配套技术是梯田粮食实现高产稳产 ,保障区域食物安全生产的关键举措之一 ,同时也是实现退耕还林 (草 )

Three year continuos test and production practice in north Shaanxi proved that yield of film covered corn in terraced land increased 19.4%~58.3% and WUE increased 23.8% compared with that by routine cultivation techniques; film covering and the correspondent techniques are key measures to achieve high and steady production of crops in new built terrace and to ensure safety of local food supplies. It is also an important base for achieving the strategical goal of reducing cultivated land to plant more forest and grass.