Recently, some vegetable farmers have reported that the greenhouse tomato they planted had cracks on the first and second ear fruits from the peduncle. One of the characteristics of this cracking is that most of them are cracked from the flower pedicle, and the seeds are exposed when they crack. The main reason for the emergence of fruit seeds in greenhouses was due to the failure of flower organs and fruits to develop normally. The development of a tomato as a normal fruit depends mainly on the quality of flower bud differentiation. Tomato fruits, especially the first and second panicles, are exposed mainly due to the high temperature or low temperature encountered during tomato transplanting. Usually when the tomato seedlings grow to 6 true leaves, flower bud differentiation of 1, 2, 3, and 4 inflorescences has been completed. When the flower buds of the inflorescences of the inflorescence differentiated into flowering plants at the seedling stage, if they encounter low temperature or high temperature, insufficient water, and too much nitrogen fertilizer, This will lead to over-differentiation of flower buds and the formation of multiple carpel malformation flowers. The resulting fruits will be deformed early. Sometimes in the nursery period or during the period of transplant due to low temperature or long duration of drought, low temperature, small temperature difference between day and night, nitrogen supply, seedling growth at inhibiting conditions, the flower easy to cork. When transferred to the appropriate conditions, the first formed cork tissue can not adapt to the rapid growth of the new internal organization, the formation of fruit cracks, pods, seeds and other fruits exposed to deformity. Control measures: 1 Select varieties that do not produce teratogenic fruit, such as Hongyu, Hongbao, Xifen No. 3, Jiahong, Lichun and so on. 2 Reasonable use of plant growth regulators. When seedlings appear to grow in length, they cannot rely solely on water control and cooling to control seedling growth. Instead, they should spray “multi-purpose†200-times fluid or spray at a concentration of 0.01% on the basis of good temperature, light, and moisture regulation. Apply 25% of the booster to properly control the disease. 3 When the tomato is watered, the plant should be irrigated with no deep ploughing. According to the ratio of 30 ml plus 15 kg of water, flush with water; it can also be combined with topdressing organic fertilizer, and every 50 kg of organic fertilizer with 30 g of granules to enhance the soil Breathability, increase tomato suction fat absorbent capacity. 4 It was found that the exposed fruit should be promptly removed. In order to prevent the occurrence of malformed fruit, it is recommended to spray the available boron and Indian calcium mixture at 600 to 800 times, spray once every 6 days, spray 2 or 3 times continuously, and control tomato seeds. Exposure has a good effect. Veterinary endoscope
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