高海拔冷凉地区玉米育苗方法研究

Study on the methods of cultivating seedlings of maize in the cold plateau area

在地膜覆盖条件下研究了育苗移栽和直播覆膜护苗两种方法对西宁旱地玉米生长发育和产量的影响。结果表明 ,采用直播覆膜护苗方法可以消除移栽产生的缓苗影响 ,使玉米开花期提前 ,单株叶面积增大 ,灌浆时间延长 ,与育苗移栽相比 ,增产效果达 1 7 0 8%。

The influences on the growths and the yields of maize by two different cultivation methods of the setting seedlings and the direct seeding protected with the plastic film are studied under the condition of mulching The result showed that the method of the direct seeding protected with the plastics can dispel the negative influece of the growth retardation in certain period caused by setting seedlings and make the maize blossom in earlier time It also can increase the leave areas of plant and prolong the filling stage of maize,Therefore it's effect in increasing output is 17 08%