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斑点落叶病目前是苹果生产上的一种重要病害,发生严重时常引起提前落叶,甚至出现二次开花现象,影响苹果的丰产与丰收。目前生产上多用代森锰锌、大生等常规化学农药防治,在一般年份能起到较好效果,但雨水大的年份,防治效果不甚理想。2年来,我们用美国杜邦公司生产的68.75%易保
Spotted leaf disease is currently an important disease in the production of apples. Occurrence of serious leaf decay in advance often causes secondary flowering and may affect the yield and harvest of apples. The current production of mancozeb, soy and other conventional chemical pesticide control, in general years can play a better effect, but the rainy year, the control effect is less than ideal. 2 years, we use the United States DuPont 68.75% Yi Bao