论文部分内容阅读
我区在连续五年试验的基础上,于1984年进行了3.7万亩玉米化学除草免中耕开发试验,并获得了成功。免中耕,即不用铲趟,在播种后至出苗前喷一遍除草剂便可控制杂草危害,利于保苗和植株发育。据我区调查,实行免中耕技术的除草效果达85～90％,玉米平均单产923.1斤,比三铲三趟的对照田增产5.6％。全区利用这项技术共增产玉米165.3万多斤,去掉除草剂及药械费用,纯收入37.8万多元。
My area in the continuous five years of experiment based on the 37000 hectares of maize chemical weed free plow development test in 1984, and was successful. No-tillage, that is, do not shovel trip, spray it again after spraying to herbicide before weeding can control the weed harm, which will help seedlings and plant development. According to our survey, the herbicide-free technology achieved 85-90% herbicidal effect. The average yield of corn was 923.1 kg, an increase of 5.6% over the control paddy with three shovels. The region’s total use of this technology increased production of corn 1.653 million kilograms, excluding herbicides and medicine costs, net income of more than 378,000 yuan.