In the production of spring tomato in greenhouse greenhouse cultivation, the common symptoms of gray mold are as follows: the skin becomes grayish white, soft rot, there is a large amount of gray mold layer, and finally the fruit loses water and rigidity. There are many occurrences of green fruit, and when it occurs seriously, it will greatly affect fruit production. In production, there is also a symptom of tomato fruit gray mold: the green fruit is white ring (diameter 3 ~ 6 mm), like a halo, with a small engraved point. On ripe fruit, yellowish white ring, similar to the diffusion edge. Its prevention and control measures: spraying 600 times the new high-fat lipid membrane at the seedling stage to prevent the bacteria from infecting, increase the ability to resist natural disasters, increase the intensity of photosynthesis, and protect the seedlings to thrive. During the fruit period, spraying the fruits and stimulating the fruit and strengthening the quality of pollen fertilization, the cycle of fruit set rate is strong, promote fruit development, no deformity, no shell, no pods, good uniformity, quality improvement, so that the high yield of vegetables and fruits. Prevent disease, spray general tree maintenance, disinfection, sterilization, suffocation-type elimination of the virus, closed the virus replication and transmission path, improve plant spirits.
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