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套袋梨园应侧重于对枝干、叶部病虫害及人袋害虫的防治。选择高效、低毒、低残留、低药害的农药种类,同时要避免用药种类单一,以防病虫产生抗药性。在防治方法上,应坚持“综合防治”,本着“预防为主,治疗为辅”的原则。要注意保护天敌,选用对天敌无害的生物农药,在天敌发生高峰期不用药。强化农业措施防治、生物防治和人工防治。注意“三个结合”,即杀菌剂和杀虫剂相结合,防病虫药剂与叶面施肥相结合,药剂与助剂(多功能植物增效剂、展着剂等)相结合。
Bagging pear orchard should focus on the prevention and treatment of branches, leaf pests and human bag pests. Select efficient, low toxicity, low residue, low pesticide pesticide species, while avoiding a single species to prevent pests and insect resistance. In the prevention and treatment methods, should adhere to the “comprehensive prevention and treatment”, in the “prevention first, treatment supplemented” principle. Should pay attention to the protection of natural enemies, the selection of biological pesticides harmless to natural enemies, do not medication in the peak of natural enemies. Strengthen the prevention and control of agricultural measures, biological control and artificial control. Take note of the “three combinations” of fungicides and insecticides, the combination of anti-pest and foliar fertilizers, and the combination of agents and auxiliaries (multipurpose plant synergists, spreading agents, etc.).