After the enlargement of tomatoes and tomatoes, oval-shaped fruit, flat round fruit, multi-chamber fruit, cracked fruit, finger-shaped fruit, and pointed-shaped fruit sometimes appear. These are all deformed fruit.
Too much nutrition during the flowering period of tomato, too much nitrogen and phosphorus fertilizers, especially tomatoes cultivated in winter, before and after flower bud differentiation, when the temperature of 6 °C ~ 8 °C is encountered for several days, malformation will appear. The main cause of malformed fruits is that before flower bud differentiation, nutrient transport from the leaf to the flower is increased due to the reduction of nutrients consumed by the respiration. As a result, carbohydrates accumulate in the flowers, resulting in a large number of carpels forming malformations.
In addition, tomatoes are treated with hormones that are too high in concentration; or during treatment, temperatures are low, light is insufficient, and the air is relatively dry; or the nutritional conditions are poor. The hormones that were supposed to fall out are treated with hormones, which inhibits the formation of stratums and reluctantly sits on fruit. However, fewer photosynthetic products are produced, resulting in malformed fruit.
Control methods: First, strengthen management during the seedling period, especially temperature management. Do not colonize prematurely when temperatures and temperatures are low. The second is to pay attention to fertilizer and water management. The growth potential of the seedlings should not be too strong, especially from the time of the second transplanting into the planting of the 20 to 25 days after planting, pay attention to controlling the growth potential of the seedlings. Avoid applying nitrogen fertilizer when it is cloudy. Third, temperature control should be appropriate. Before the differentiation of flower buds in the first inflorescence, avoid low temperatures of 6°C to 8°C for more than 10 consecutive days. Discard the malformed fruit that has emerged.
The deformed fruits of eggplant and eggplant mainly have stagnation, double fruit and so on. Strange fruit, also known as stone fruit, is a unisexual and fruitful deformed fruit. The fruit is small, the peel is white, and some surfaces are bulging, the flesh is hard and the taste is poor. The main reason for its formation is low temperature, continuous snow days before and after flowering, lack of light, resulting in poor pollen development, affecting pollination and fertilization.
In addition, the flower bud differentiation period, the temperature is too low, too much fertilizer, excessive watering, so that the growth point of excessive nutrition, flower buds, excess nutrients, cell division is too strong, it will cause more carpels of the deformed fruit, the double eggplant.
Control methods: Pay attention to the seedling stage not excessive hardening, especially the temperature can not be too low, generally not lower than 12 °C. Rational fertilization when planting, in particular, can not be partial application of nitrogen, phosphorus, potassium and other fertilizers. In other words, the shed film is regularly wiped to increase the transparency of the greenhouse and improve the cold resistance of the eggplant plants. If you encounter continuous cloudy snow weather, you can warm up the light properly to avoid eggplant deformity caused by the low temperature of the greenhouse.
The abnormalities of chili peppers and sweet peppers are characterized by fruit rigidity, shrinkage, and distortion. There are few or no seeds in the fruits and the value of the products is lost. In recent years, individual facilities have used greenhouses to conduct off-season cultivation of peppers and sweet peppers. In order to excessively delay the delay or bring up the morning market, late autumn and late winter cultivation of peppers and sweet peppers in the late stage of the results, the night temperature is lower than 15°C, early spring cultivation Peppers, sweet peppers in the early results, the night temperature is not to 15 °C, pollen development is not good, incomplete fertilization, and fruit can not be expanded, resulting in a large number of malformed fruits.
Prevention methods: to improve the soil environment, increase the temperature of the ground and the temperature of the shed, do a good job of fertilization, mulch film, shed film light transmission and shed body insulation. First, biological bacterial fertilizer can be added to improve the structure of soil pellets, enhance the root activity of pepper vegetables, and improve comprehensive resistance. The second is to spread wheat straw in the ridges between the sheds, which can increase the ground temperature and protect the earthworms, and can also control the increase of air humidity in the shed. The third is to add a fill light, the back wall to set up a light curtain, etc., to warm up and fill light.
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