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扑海因是新一代广谱杀菌剂,它既可抑制孢子的滋长,也可控制菌丝体,对苹果早期落叶病有极好的防治效果.为了制定扑海因在苹果上的安全使用标准尽快应用于生产,1985—1986年我们对该药剂在适用作物中的残留动态进行了研究.田间试验 为了明确扑海因在苹果中的消解规律,选六株生长一致的苹果树,每两株为一个重复,浓度为2000ppm,六月下旬一次喷药,分期采样.为了确定安全间隔期,残留动态试验设1000ppm和2000ppm两个施药剂量,每个剂量又设三、四、五次喷药,三次采样.
PuHaine is a new generation of broad-spectrum bactericide, which can inhibit the growth of spores, but also control the mycelium, the apple early deciduous disease has excellent control effect.In order to develop the safe use of lovastatin in the apple standard As soon as possible applied to the production, 1985-1986, we studied the residual activity of the agent in crops suitable for application.Field experiments In order to confirm the law of disulfide in apple, we selected six identical apple trees, each two plants For a repeat, the concentration of 2000ppm, a spraying in late June, staged sampling.In order to determine the safety interval, the residual dynamic test set 1000ppm and 2000ppm two doses, each dose and set three, four, five spray , Three samples.