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小麦赤霉病、白粉病、粘虫是我县小麦生产上的主要病虫害。一般规定的防治适期,小麦赤霉病为4月下旬,白粉病为4月中、下旬,粘虫为4月底、5月初。农户希望选择适当的时期1次施用药肥剂,兼治两病1虫,为此,在1989年我县两病1虫大发生的情况下,采取分期施用药肥的方法,对防治适期进行了初步探索,现将结果整理如下。 一、药肥种类及施用时期 选择密度均匀、长势一致、抽穗整齐的小麦田,按每亩施用25％多菌灵150克,80％敌敌畏35毫升,尿素0.5公斤,加水40公斤,配成药肥混剂,于4月23日(扬花20％)至5月5日,隔天施药1次,共分7个处理,重复3次,每小区8m~2分别于5月9、18、26
Wheat scab, Powdery mildew, Mythimna separata are the major pests and diseases on wheat production in our county. The general provisions of the control period, wheat scab was late April, powdery mildew in April, late, armyworm for the end of April, early May. Farmers hope to choose a suitable period of time the application of fertilizer, and treat both diseases and pests, therefore, in 1989, the county two cases of a disease occurred, the use of staged application of fertilizer to control the appropriate period A preliminary exploration, the results are summarized below. First, the type of fertilizer and application period Choose uniform density, consistent growth, neat heading wheat field, per acre 25% carbendazim 150 grams, 80% dichlorvos 35 ml, urea 0.5 kg, add water 40 kg, dubbed drug fertilizer Mixture, on April 23 (20% flowering) to May 5, the next day the drug 1, divided into 7 treatments, repeated 3 times, each plot 8m ~ 2 in May 9,18,26