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大庆地区从1977年开始进行了玉米化学除草试验、示范,并应用于大面积生产。1980年玉米化学除草5.8万亩,1981年在利用上年药效的基础上又防除8471亩,合计66,471亩,占全市48万亩玉米面积的13.8％,占油区7.3万亩玉米面积的91％。经在玉米地定点调查,本地杂草发生的种类、时期、分布与危害等情况如下: 1.杂草种类:大庆地区玉米田间杂草有6科10余种。禾本科的稗草、狗尾草;黎科的灰菜、猪毛菜;苋科的苋菜;蓼科的荞麦
Daqing region started from 1977, corn chemical weeding test, demonstration, and applied to large-scale production. In 1980, the chemical weed control of maize was 58,000 mu. In 1981, on the basis of utilizing the pharmacological effects of the previous year, it also controlled 8,471 mu, a total of 66,471 mu, accounting for 13.8% of the 48,000 mu of corn in the city and 91,000 mu of corn in the oil region %. According to the survey conducted in the corn field, the occurrence, distribution, and damage of local weeds are as follows: 1. Weed species: there are more than 10 species of weeds in the corn field in Daqing. Gramineous barnyardgrass, Setaria viridis; Ricinaceae cabbage, Salsola; amaranth Amaranthus; Polygonaceae buckwheat