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果树病虫在休眠期的越冬场所较集中,虫龄一致,且是一年中危害能力最弱的时期,便于集中消灭。此时,果树全部落叶,耐药力强,喷药容易均匀周到,既省药,效果又好。1.耕翻、增施有机肥、整修排灌设施耕翻的深度不应浅于60厘米,这样,可改善土壤结构,增加土壤肥力,促进果树生长发育健壮,增强抗病虫的能力。在土壤中越冬的害虫被翻到地表冻死或晒死,有的被鸟和天敌吃掉,有的被耕
Fruit trees pests in the dormant overwintering places more concentrated insects age, and is the weakest year of the weakest period, easy to concentrate eliminated. At this point, all the deciduous fruit trees, drug resistance and strong, spray easy and thoughtful, both provincial medicine, the effect is good. 1. Plowing, adding organic fertilizer, renovation irrigation and drainage facilities Plowing depth should not be shallow Shallow than 60 cm, so that can improve the soil structure, increase soil fertility and promote robust growth and development of fruit trees, and enhance the ability of resistance to pests and diseases. Pests that overwinter in the soil are turned to the surface to freeze or sun, some are eaten by birds and their natural enemies, and some are tilled