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世界上玉米面积仅次于小麦和水稻,是第三大粮食作物,是进行化学除草较早的作物之一,特别是50年代后期均三氮苯类除草剂出现后,玉米化除迅速发展。我国早在60年代初期就开始使用2,4-滴防治阔叶草,用西玛津、阿特拉津防治一年生杂草,但由于除草剂供应、价格等问题的影响,未能推广,直到80年代才较快发展。随着少耕、免耕法的推广,玉米种植面积的扩大,化除越来越重要。离开除草剂,免耕和少耕就难以实行。一、连作玉米的化除在我国春玉米区,如吉林、黑龙江省一些地区进行玉米连作,玉米连作为使用除草剂提供了方便的条件。适用的除草剂有:阿
The corn area in the world is second only to wheat and rice. It is the third largest grain crop and one of the earliest crops to carry out chemical weeding. Especially after the advent of triazine herbicides in the late 1950s, the rapid development of corn has progressed. As early as the early 1960s, China started to use 2,4-D control of broadleaf grass, with Simazine, atrazine to control annual weeds, but due to the impact of herbicide supply, prices and other issues, failed to promote until 80’s rapid development. With the reduction of tillage and the promotion of no-tillage, the expansion of planting area of corn has become more and more important. Leave the herbicide, no-tillage and less tillage would be difficult to implement. First, even the addition of corn in addition to China’s spring corn area, such as Jilin, Heilongjiang Province in some areas for continuous cropping corn, corn even as the use of herbicides provided a convenient condition. Suitable herbicides are: Ah