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农得时是美国杜邦公司1984年研制出的目前国际上最先进的水田除草剂之一,我省从1987年开始引进示范推广。一、基本性质农得时属磺酰脲类除草剂,商品为10％可湿性粉剂,大鼠口服致死中量大于5000毫克/公斤体重,属低毒农药,可很快溶于水中,迅速扩散,均匀分布到水田中,经杂草根、叶吸收并转移到整株中,通过抑制两种主要氨基酸的生物合成,阻止细胞分裂而达到杀草目的,而水稻则可迅速通过代谢作用将农得时分解成为无害的惰性化合物,因而具有明显的选择性保护作用。二、适用范围农得时适用于各种水稻类型品种及多种栽培
Agricultural production was one of the most advanced paddy herbicides developed by the DuPont Company in 1984 in the United States. From 1987, the province introduced demonstration and promotion. First, the basic nature of agricultural products when the sulfonylurea herbicide 10% wettable powder, the amount of oral death in rats greater than 5000 mg / kg body weight, is a low toxicity pesticide, can be quickly dissolved in water, the rapid proliferation , Evenly distributed to the paddy field, the weed roots, leaves absorbed and transferred to the whole plant, by inhibiting the biosynthesis of the two main amino acids to prevent cell division and achieve the goal of killing grass, and rice can quickly through the metabolic role of agriculture Time-resolved into harmless inert compounds, which have obvious selective protection. Second, the scope of agricultural income applicable to all types of rice varieties and a variety of cultivation