Key measures for protecting Flower and Fruit of Mango

Mango is often due to bad weather, diseases and insect pests or improper fertilizer and water management, resulting in a large number of flowers and fruits, resulting in losses. Therefore, it is necessary to start as soon as possible and take all effective measures to ensure the normal flowering and fruiting of mangoes. According to the experience of fruit farmers in Huazhou City, the following measures should be implemented: 1. Strengthen fertilizer and water management, timely irrigation or spraying. If the mango meets high temperature and drought weather during flowering, it will inevitably lead to serious flower and fruit drop. At this time, the best way is to irrigate or spray water, so that mangoes can not only meet the supply of nutrients and water at the development stage, but also have a space environment with appropriate temperature, so as to avoid falling flowers and fruits caused by excessive drought and adverse environment affecting the imbalance of fertilizer and water supply. 2. Divide the fruit, hang the fruit and bag at the right time. During the period of flowering and fruiting, attention should be paid to the reasonable distribution between ear and ear, fruit and fruit. Use a rope to pull the ear apart at a proper distance or about 50 cm away from the ground with the fruit, to prevent bird damage and bacterial infection, and to prevent the collision between ear and ear, fruit and fruit and the influence of strong wind. At the same time, after the formation and development of young fruit is stable, fungicides should be sprayed in time, and then bagged fruit by fruit. When bagging, the mouth and handle of the bag should be carefully fastened to prevent the invasion of citrus fruit flies, reduce bacterial infection and ensure the full development of the fruit. 3. Pay attention to the prevention and control of diseases and insect pests. During the period from flowering to fruit harvest, all kinds of diseases and insect pests will attack one after another, and prevention and control work must be done in time. Implement the principle of "giving priority to prevention and comprehensive control", closely combine fertilizer and water management and extra-root topdressing, cooperate with spraying insecticides or fungicides, and carry out the combination of fertilizer and medicine to control diseases and insect pests. Fungicides should be added to prevent the disease. 1000 times of carbendazim or 1000 times of sulfur suspension can be used to control powdery mildew and anthracnose. If insecticides are needed, insecticides should be added, 40% omethoate 2000 times solution can be used to kill short-headed leafhoppers, tail night moths and fruit weevil; for citrus fruit flies, adults should be grasped, and 0.5% sugar solution can be added to trichlorfon for spraying, once every 4 days, 3 times in a row, spraying on branches and leaves to kill the adults of the pest.