【摘要】 以甲基肼水溶液、双乙烯酮为起始原料,经4步反应,以67%的总收率合成了吡唑特。合成的吡唑特对稻田杂草具有很高的除草活性,对水稻安全。对稗草、雨久花、牛毛草、眼子菜等杂草的ED90为1800ga.i./hm2,对慈菇、藨草的ED90为2000ga.i./hm2。更多还原

【Abstract】 Pyrazolate was synthesized in methyl hydrazine solution, using diketene as starting reagent, and with a total yield of 67%. Synthetic pyrazolate has high activity on rice weeds, and good safety to rice. The ED90 was 1800 g a.i./ha for control of Echinochloa crusgalli, Monochoria korsakowii, Eleocharis yokoscensis, and Potamogeton distinctus, and 2000 g a.i./ha for control of Sagittaria trifolia and Scirpus triqueter.更多还原