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一、化学除草的历史及现状随着农业机械化水平的提高和农业科学技术的发展,在对杂草生物学特性、机械除草和农业措施除草等多方面研究的基础上,逐步形成了以机械灭草为主的一整套综合灭草措施,对防除农田杂草、提高农作物产量起了重要作用。从1956年开始,垦区进行了化学除草试验;到1962年选出了2.4滴、敌稗、2甲4氯等麦田和水稻田除草剂;1963年开始在麦田用飞机喷洒2,4-滴
First, the chemical weeding history and status quo With the improvement of agricultural mechanization level and the development of agricultural science and technology, based on the weed biological characteristics, mechanical weeding and weeding and other aspects of agricultural measures based on the research, and gradually formed a mechanical destroy The grass-dominated set of integrated measures for the elimination of weeds has played an important role in the control of weeds in farmland and the improvement of crop yields. From 1956 onwards, chemical herbicides were carried out in the reclamation area. By 1962, wheatgrass and rice herbicide were selected as 2.4 drops, propanil, 2-methyl-4-chloroethane and so on. In 1963, 2,4-D