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有读者问,秧田除草,插秧后过了20天左右,秧田有稗草、鸭舌草、节节草、丁香蓼、野荸荠等。不想用喷雾法,能否选用撒施农药来防治杂草,以减少劳动力的投入。稻田杂草种类繁多,出苗期不一,同一种杂草有先出苗的,也有后出苗的,造成用一种除草剂进行一次施药,因杀草谱窄和持效期短,不能达到防除多种杂草和后出苗杂草的目的,而进行二次施药并配合混合施药,在生产实践中取得较好效果。
A reader asked, weeding seedling, transplanting after about 20 days, barnyard grass seedling, Monochoria, steadily grass, clove Polygonum, wild water chestnuts and so on. Do not want to use the spray method, can we choose to spread pesticides to control weeds in order to reduce labor input. There is a wide range of weeds in paddy fields, with different seedling emergence stages. The same weed species emerges first and then emerges later, resulting in a pesticide application with one herbicide. Because of the narrow spectrum of herbicide and short holding period, it can not achieve control A variety of weeds and the emergence of weeds purposes, and the second application of pesticides and mixed with pesticides, in production practice to achieve better results.