论文部分内容阅读
在示范中,人们对中高山地膜玉米覆盖有个误区,即误认为地膜覆盖玉米播种用工多,投资大,增产不增收,无经济效益。实践证明,使用地膜覆盖玉米可提高经济效益。据试验:4月11日播种的郧单1号到8月31日收获,生育期143天,经地膜覆盖的活动积温3401.70℃。而同露地的3069.90℃
In the demonstration, people have a misunderstanding about the coverage of middle and high mountain mulch corn, which mistakenly think that the mulching of mulching corn covers a lot of labor, and the investment is large, the output will not increase, and there is no economic benefit. Practice has proved that the use of plastic film covering corn can improve economic efficiency. According to the test: Yun Dan No. 1 sown on April 11 to August 31 harvest, growth period of 143 days, the accumulated activity of the film covered by the temperature 3401.70 ℃. And with the exposed 3069.90 ℃