地膜覆盖与育苗移栽对甜玉米生长及产量的影响

以大田直播为对照,研究了地膜覆盖与育苗移栽对甜玉米生长及产量的影响.结果表明,地膜覆盖较同期直播（5月2日）收获期提前4 d,鲜穗产量增加18.0%;育苗移栽膜地收获期较直播提前5 d,鲜穗产量略低于覆膜种植而较直播提高15.4%;育苗移栽露地不仅收获期未能提前,而且鲜穗产量较直播低8.3%.各处理相比,移栽具有降低株高和穗位高的效应,覆膜（包括移栽膜地）则有提高产量和降低秃尖长度的作用.

Effects of Plastic Covering and Cultivation by Setting Seedling on Growth and Yield of Sweet Corn

The reasearch was carried on in farm of inner mongolia university for natinalities in xi liao river plain,direct sowing in field as the contrl,mainly studied on effct f film mulching and seedings and transplanting on development and yield f sweet corn.The results showed that harvest time of film mulching was ahead four dates compared to diect sowing in the same time,and yield of fresh spike increased 18.0%;while harvest time of seedlings and transplanting to farm land covering with film was muved up five dates in advance,yidld of freed spike was lower than film mulching but higher than direct sowing 15.4%;However seedlings and transplanting to open ground was not harvested in uadvance,and yield of freesh spike decreased 8.3% than direct sowing.Compared with each treatment,transplanting made plant height and ear height low,but film mulching(including transplanting to farm land covering to farm land covering with film)could improve yield and decrease bare tips of length.