How to prevent grape fruit from burning and cracking?

Irrational fertilization. Apply more nitrogen fertilizer and less phosphorus, potassium fertilizer and calcium fertilizer; More inorganic fertilizers and less organic fertilizers lead to serious fruit cracking in vineyards.

Coping methods: Rational fertilization and soil improvement. Appropriate amount of nitrogen fertilizer, more phosphorus and potassium fertilizer and more organic fertilizer should be applied, and the amount of calcium fertilizer should be increased in cohesive soil. It is best to apply base fertilizer in the ditch. For the soil with poor air permeability and poor drainage, it is necessary to improve the physical properties of the soil and reduce the change of soil moisture by deep ploughing and strengthening drainage facilities. Cover with plastic film. Covering the vineyard with plastic film can prevent the roots from absorbing too much rain, inhibit the evaporation of surface water and reduce the change of soil moisture. The combination of mulching and irrigation can effectively prevent fruit cracking under drought conditions. The pruning is unreasonable. The traditional coring method is to leave only 8- 10 old leaves on each fruiting branch and remove all new leaves. Many fruit farmers have been using this method, and the water regulation ability is reduced, and it is easy to cause fruit cracking when it rains. Coping method: reasonable pruning. We should change the traditional coring method in the past and leave more leaves. Leave two leaves on the secondary branch above the ear to pick the core, and remove all the winter buds and summer buds between the leaf axils of the secondary branch. It can reach more than 25-26 normal leaves per fruit branch, and enhance the ability of leaves to adjust water. Pathological cracking is mainly caused by anthracnose and powdery mildew. As long as there is disease harm, fruit cracking may occur at any time. Its symptoms are peel cracking, shallow cracks and no pulp flowing out. After the disease is controlled, dry spots can be formed at the cracked parts. ?

Coping method: spraying pesticides in time for prevention and control. In this article, I won't elaborate on the specific technology. If not, you can go to Baidu to search for one-stop agricultural services. There is a column about Kyoho grape planting technology.