Application of Organic Fertilizer to prevent Tomato Green Peel

The green skin fruit of tomato is a kind of gluten rotten fruit, and there are many causes of tomato green skin fruit, among which the most important one is the imbalance of fertilization, high nitrogen and low potassium, excessive application of nitrogen fertilizer and relatively less potassium are the main causes of tomato green fruit. After the tomato enters the fruiting peak period, it is easy to lead to green fruit when it encounters bad weather (low temperature, weak light) or unreasonable fertilization (partial application of nitrogen fertilizer). The following measures can be taken to prevent it: increasing the application of organic fertilizer, adopting the technology of formula fertilization, and not using more ammonium fertilizer, so as to adjust the proportion of nitrogen, phosphorus and potassium in soil and promote the absorption and utilization of potassium by plants. This is the most important measure to prevent the green fruit of tomato. Prolong the exposure time of vegetables. When the fruit enters the color conversion period, the lower leaves and nearby leaves of the color-changing ear should be removed, and the occurrence of green fruit can be reduced by increasing light. Strengthen the root and raise the root, enhance the plant resistance. Foliar fertilizer containing a variety of elements (boron, calcium, magnesium, iron, zinc) is used, among which amino acid type is suitable to promote black and green leaves, enhance photosynthesis, increase the absorption of boron and calcium elements, and reduce green skin and fruit cracking. To strictly control the temperature, the daytime temperature should be controlled at 25 ℃-30 ℃, the night temperature should be kept at 14 ℃-16 ℃, and the temperature difference between day and night should not exceed 15 ℃. Balance the number of fruit-setting plants, do not set too much fruit or set fruit too low. The concentration of flower hormone should not be too high, and fertilizer should be replenished in time after using some anthers. For the greenhouse where green fruits have occurred, high potassium foliar fertilizer and chitin can be sprayed to relieve symptoms.