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小麦是重要粮食作物,1987年全世界栽培面积为22293.6万公顷,我国为2890.1万公顷,其中春小麦约400万公顷。黑龙江省是春小麦主要产区,面积约200万公顷。一、麦田化学除草存在的问题黑龙江省是我国麦田化学除草最早的地区,50年代就进行2,4—滴除草试验,1963年农垦系统开始用2,4—滴航空灭草,成效显著。至1986年止,化学除草面积累计达
Wheat is an important food crop. In 1987, the world’s cultivated area was 222.936 million hectares and our country was 28.901 million hectares, of which spring wheat was about 4 million hectares. Heilongjiang Province is the main producing area of spring wheat with an area of about 2 million hectares. First, the problems of wheat field chemical weeding The Heilongjiang Province is the earliest wheat weeding chemical weeding in the region, the 50-year 2,4-drop weeding test, 1963 Farming System began to use 2,4-drip air weeding, with remarkable results. Until 1986, the total area of chemical weed control reached