发布日期:2020-08-18 点击次数:290
1. Variety selection. Among the apple varieties, the Marshal apples are effective and strong against fruit rust, and the Shouhong Fuji, Reizumi Danfu, Miyazaki, and Huimin of the Fuji line are also highly resistant to fruit rust. Among the yellow varieties, Wanglin and Granny Smith, which are more resistant to fruit rust, can be selected.
2. Tree body spray film. Before the fruit tree sprouts, from sprouting to the young fruit grows to the size of a thumb, spraying with antiseptic film to form a physical protective film to isolate the infection of pathogens and prevent the invasion of pathogens. The spraying prevention of fruit trees after flower drop is the key to preventing and controlling apple rust.
3. Humidification and drought resistance. In case of continuous high temperature and arid climate, humidification and drought resistance should be carried out in time. Orchards with irrigated conditions should be irrigated the whole garden, and 20 kg of Heiba Fertilizer should be applied with the water to develop the roots of the crops and improve the drought resistance; cooperate with the entire garden spray intelligent factor Film, to protect the soil and the tree's own nutrient water from evaporating, and at the same time prevent the outside climate and pesticides from harming the fruits, and reduce the disease rate of fruit rust.
4. Organophosphorus pesticides are prohibited in the young fruit period. During the young apple period from May to June, it is strictly forbidden to use organophosphorus pesticides to prevent and control diseases and insect pests to avoid the increase of fruit rust disease rate caused by human factors.
5. Fruit bagging. Within 40-50 days after flowering, bag the fruit throughout the garden. On the one hand, this measure can improve the appearance quality of the fruit and reduce the pollution of the fruit by pesticides and harmful dust. On the other hand, it can effectively prevent the occurrence of fruit rust.