晚播小麦覆膜增产作用研究

Effect of Plastic Mulching on Production Increase of Late-Sowing Wheat

覆膜能明显的增温、保墒提墒、加速养分释放,对晚播小麦的根系生长及分蘖等起着重要的促进作用。为小麦健壮生长,增加群体,加快生育进程和增产创造了良好的有利条件。试验表明,覆膜后可使分蘖增加43.11％,次生根增加46.71％,单株干重增加108.78％,穗数增加69.10％,增产率达95.86％,纯收益1hm^2增加900多元。

It is obvious that plastic mulching can raise temperature, preserve and increase soil moisture and promote nutrient release. This will play an important role in promoting root growth and tillering of late-sowing wheat. And it also provides the better environment for wheat to grow,to increase its populations,to accelerate the process of its development and growth and creates the favourable conditions for yield increase. The testing results showed that tillering,secondary roots,dry weight and ears could increase 43. 11%, 46. 71%, 108. 78%and 69. 10% respectively. The yield increasing percentage could reach 95. 86%,and net economic returns will be more than 900 yuan/hm2.