国外农药专家认为,在农业病虫害上,要是不使用农药,粮棉等谷物至少要损失三分之一。因此,各国都在积积发展农药生产,这是农业增产稳产不可缺少的一项技术措施。近来各国农药使用量越来越大,数量、品种、剂型和施药技术都不能满足当前农业生产发展的需要,供需矛盾十分突出。今后随着各国农业现代化的迅速发展,对病虫草害防治的要求也会越来越高,高效安全的农药供应不足的矛盾将更为突出。特别是由于 Foreign pesticide experts believe that in agricultural pests and diseases, if you do not use pesticides, grain and cotton and other cereals at least one-third loss. Therefore, all countries are accumulating and developing pesticide production, which is an indispensable technical measure for increasing agricultural output steadily. Recently, the use of pesticides in various countries is getting larger and larger. The quantity, variety, formulation and application of pesticides can not meet the needs of current agricultural development. The contradiction between supply and demand is very prominent. In the future, with the rapid development of agricultural modernization in various countries, the requirements for the prevention and control of pests, diseases and weeds will also become higher and higher, and the contradiction between the supply of pesticides in an efficient and safe manner will become even more prominent. Especially because of