Since entering the middle and late October, following the gradual decline in temperature, the pests and diseases of orchards have ceased to enter the dormant period. In this regard, strengthening the winter management of the orchard is an important action to reduce the wintering base of various pests and diseases, and to reduce the occurrence of pests and diseases in the growing season of the orchard, which can achieve twice the result with less effort and reduce the amount of control. First, the characteristics of winter important pests and diseases damage: In autumn and winter, other pests and diseases other than decaying with the gradual lower temperature will sleep in the winter or winter in the fruit trees or leaves. The characteristics of the episode are that the places where pests and diseases are wintering are more concentrated, and it is easy to collect prevention and destruction. The wintering of the decaying disease is different, it changes with the unevenness of the temperature. When the temperature rises above 0 °C, the epidermis gradually invades and spreads inward, and when the temperature drops below 0 °C, it is blocked. Second, the wintering characteristics of the main pests and diseases: (1), small leaf moth: The small leaf moth is a winter larvae that is overwintering under cracks or bumps in the fruit trees, and the white crickets in the gaps of the kerf wounds. The wintering larvae are harmful to the apples when they sprout, and they occur in the county for 3-4 generations. (2), gold-grained moth: the wintering in the larvae of the larvae, the buds of the apple tree buds sprouted at the beginning of the germination, the mating spawning and the opposite side of the young leaves, the larvae directly invaded the leaves after hatching. 5 years of onset. (3) Hawthorn leafhopper: The wintering is clustered in the soil gap around the backbone of the fruit tree, the main branches and the side branches, the cracks and the soil around the backbone. In the second year from the end of March to the middle of April, the apple flower buds began to sprout after the germination. During this period, the temperature was stable and the sputum was more regular and the peak was significant. (4) Apple whole claws: The eggs are overwintered on the short fruit branches, the fruit table, or the small fruit branches of the fruit for more than two years. In the second year, the average temperature of the apples before the flowering is 10 degrees, the overwintering eggs begin to hatch, and after 3-5 days, they enter the hatchery. The peak gathering is a critical period of chemical control. 5, decaying disease: The decaying disease overwinters on the diseased and diseased bodies of the mycelium, conidia and ascospores. When the conditions are suitable, many pathogen spores occur, and the infection is caused by wind and rain. The main route of infection is the cutting of the slash wound, followed by the lenticels, the stalks and the leaf marks. More pesticide knowledge , please pay attention to China Pesticide Network Camping Light,Outdoor Light,Outdoor Camping Light,Emergency Rechargeable Searchlight Cangnan Younglite Electrical Co., Ltd. , https://www.younglitelight.com