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6、积极应用生物农药防治病虫害 在我国应用较广泛的有核多角体病毒、白僵菌、苏云氏杆菌(B.t)、农用抗生素等。在防治苹果病虫害中应用效果最好的是多氧霉素(宝丽安)、阿维菌素、B.t。多年实践经验证明,防治苹果斑点落叶病的最佳药剂是10%宝丽安可湿粉1500倍液。我国延边农药厂独家生产的1.5%多抗霉素300~500倍液,可取代价格昂贵的宝丽安防治斑点落叶病。
6, active application of biological pesticides to control pests in China more widely used nuclear polyhedrosis virus, Beauveria bassiana, Bacillus thuringiensis (B. t), agricultural antibiotics. In the prevention and control of apple pests and diseases in the application of the best polyoxin (Polaroid), abamectin, B.t. Years of practical experience has proved that the best medicine to control apple spot defoliation is 10% Polaroid WP 1500 times. China’s Yanbian Pesticide Factory exclusive production of 1.5% polymyxin 300 ~ 500 times, can replace the expensive Polaroid control of spotted leaves disease.