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甘肃中部干旱地区春小麦种植面积约占粮播面积的三分之一以上,近年来播种面积仍在扩大。但这类地区因人均耕地面积相对较多(一般6—9亩),劳力少,管理粗放,麦田杂草危害严重,加之该区栽种的作物绝大多数为春田,除草季节集中,往往只能在豌豆、莜麦、谷子等作物中进行,麦田素有只种不管的习惯。因此,麦田中杂草丛生,影响产量,成为目前小麦生产中极待解决的问题。笔者于1984年开始在该地区的定西县李家堡乡,对旱地麦田杂草化学防除方法进行了探索,取得了良好效果,兹介绍如下: 杂草种类和危害程度
The planting area of spring wheat in the arid region of central Gansu accounts for more than one third of the grain-sown area, and the sown area is still expanding in recent years. However, due to the relatively large per capita arable land in these areas (usually 6-9 mu), less labor and extensive management, weeds in the wheat fields are seriously endangered. In addition, the vast majority of crops planted in the area are spring fields, and weeding season is often concentrated In peas, oatmeal, millet and other crops, the wheat field has always been the kind of habit. Therefore, overgrown weeds in wheat fields affect yield and become a problem to be solved in wheat production. I started in 1984 in Dingxi County, Dingxi County in the area of chemical methods of chemical control of weeds in dry land to explore and achieved good results, it is introduced as follows: Weed species and degree of harm