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阜城县为害梨树的主要病虫有:梨木虱、梨二叉蚜、黄粉蚜、食心虫类、梨蝽、梨黑星病等。根据我们的防治试验及推广实践,现将主要病虫综合防治技术介绍如下:1 农业防治1.1 合理施肥浇水,增强树势。结合深翻改土,秋施充足的有机肥,追肥原则为“前促后控”,注意重施磷钾肥,控制氮肥用量。周年浇水掌握“前促、中控、后促”,即萌芽前和果实采后应加强浇
Fucheng County, the main pear pests damage pests are: pear psylla, pear Aphis gossypii, yellow aphid, food worms, pear bugs, pear scab and so on. According to our prevention and control test and popularization of practice, the main pest and disease control technologies are as follows: 1 Agricultural Prevention and Control 1.1 Rational fertilization and watering to enhance the tree vigor. Combined with deep soil improvement, adequate autumn organic fertilizer, top dressing principle is “before and after control”, pay attention to the re-application of phosphorus and potassium, control of nitrogen fertilizer. Annual watering master “before the promotion, control, after the promotion,” that is, before budding and fruit should be strengthened after mining