Tomato fruit is a kind of physiological disease. It refers to the empty fruit between the peel and the pulp. Common three types: First, bad placenta fruit, peel, ventricular wall is very thin see no seeds, fruit formation cavity: the second is rapid skin growth and development, placental development can not keep up and empty; third is the peel, ventricular next door For those species that grow too fast and have fewer ventricles, the high-potential inflorescences are easy to see. Although the impact of tomato empty fruit on the yield is not too great, but it will seriously affect the commercial nature, reduce economic efficiency, can not but pay attention to the production. First, the reasons for the occurrence of tomato empty fruit 1, the number of varieties of small number of ventricle ventricular prone to the number of small varieties of tomatoes empty fruit, generally the number of premature vacant varieties of small, medium and late varieties of large fruit-type ventricle number. 2. Fertilized pollen formation encounters a high temperature of 35°C, and has a long duration, poor pollination and fertilization, accelerated fruit cell division and fruit maturation during fruit development, and fruit formation inconsistent with fruit growth. 3, improper use of hormones Hormones Erhua spent excessive concentrations, repeat flower or flower buds are easy to produce empty fruit buds young. 4, lack of light due to reduced photosynthetic products, nutrients delivered to the fruit in short supply, resulting in incoherent growth of empty fruit. 5, sparse management in the full fruit period and the late growth period, fertilizer and water shortage can not keep up, less carbohydrate accumulation, there will be empty fruit. 6, late flowering fruit in the same inflorescence in the late formation of the fruit, due to the supply of nutrients is easy to form empty fruit. Second, prevent measures 1, use more varieties of ventricle to prevent tomato empty fruit can choose more ventricular variety. 2, the rational use of hormones Each flower inflorescence has 2 / 3 when opening, spraying hormones: the concentration of rhododendron 15-25 mg / kg, or tomato Ling Hua Hua 25-40 mg / kg, etc., do not reuse, in In the hot season, the concentration should be reduced accordingly. 3, Shizu base fertilizer using formula fertilization technology, a reasonable allocation of nitrogen, phosphorus, potassium, adjust the root to shoot ratio, the plant vegetative and reproductive growth coordinated and balanced development. The results of the flood season, timely recovery of fertilizer, pouring enough water to meet the nutritional needs of tomatoes, if there is premature aging phenomenon to be timely spray fertilizer. 4, reasonable regulation of light and temperature, to create a good environment for fruit development seedlings and the results of the temperature should not be too high, especially at seedlings to prevent excessive night temperature, lack of light, flowering to avoid high temperatures above 35 °C on pollination The hazards. 5, to prevent the use of small seedlings seedlings planting seedlings planting roots, strong absorption, nitrogen nutrition is also easy to form empty fruit. 6, timely picking up the heart is not too early to make the plant vegetative growth and reproductive growth coordinated development.