稻田化学除草在我区历史较长,发展至今虽然已比较普遍,但存在问题依然较多。首先,稻田草害仍较严重,个别田块草荒现象依然存在,据统计,每年因草害而造成的粮食产量损失在10%左右;其次,长期使用同一类型除草剂引起草相变化,一些恶性杂草如千金子、扁杆藨草、水竹叶等发生数量逐年上升,危害逐年加剧,同时一些高活性、高残留、超长效除草剂的使用,给水稻生产和后茬作物安全性带来隐患,除草剂药害事故屡屡发生;第三,除草剂市场“三多一乱”(生产厂家多、品种多、名称多、销售渠道乱)现象相当普遍,农民面对众多的 The chemical weed control in the paddy field has a long history in our district. Although it has become more common nowadays, there are still many problems. First of all, the grassland in paddy field is still relatively serious. The shortage of grass in some fields still exists. According to the statistics, the annual grain yield loss due to grass damage is about 10%. Secondly, long-term use of the same type of herbicide causes the change of grass phase, Weeds such as cadmium, flat rod grass, water bamboo leaves and other occurrences increased year by year, the harm intensified year by year, while some high activity, high residual, super long-term use of herbicides, rice production and crop safety belt Third, the herbicide market “three more than one disorder ” (many manufacturers, varieties, names and more, sales channels chaos) phenomenon is quite common, farmers face a large number of