What is the reason for cherry tomato white spot?

First, the symptoms show that both green and red fruits of cherry tomatoes are susceptible, with uncolored white spots symmetrically on both sides of the fruit, with no pulp and only a layer of white peel. Second, reason analysis: first, the supply of water and nutrients in the middle and later stages of cherry tomato growth is uneven or unstable, especially in drought, the water supply is abnormal, the leaf transpiration consumes a lot of water, competes with the fruit for water, and the water of the pulp is taken away by the leaves, which hinders the growth of the pulp. Second, cherry tomato can not absorb enough calcium and boron from the soil, resulting in malnutrition in the plant, physiological disorder of pulp tissue and cells, loss of water control ability, and hindrance of pulp growth. Third, control methods (1) watering in time, especially in the middle and later stage of cherry tomato fruit, should pay more attention to the balanced supply of water, watering should be carried out at 9: 12 in the morning. (2) selecting disease-resistant varieties. (3) the sunshade net can be covered properly when the sun is strong at noon. (4) promote the application of organic active fertilizer or bio-organic compound fertilizer and adopt formula fertilization. (5) foliar supplement of calcium fertilizer, can be sprayed with amino acid calcium 200 times 300 times liquid plus Aiduo harvest. Calcium fertilizer should be supplemented uninterruptedly, and navel putrefaction (navel putrefaction) should be sprayed at the same time, once every 15 days for a total of 3 times.