How to prevent eggplant from setting bumps in greenhouse

When the temperature in solar greenhouse is too low, eggplant often appears pimple fruit, which is mainly concentrated in the front end of the fruit, showing a protuberance with a finger height of 0.5 cm. Breaking open the fruit, it is found that there is a large gap between the skin and pulp where there is a pimple. The cause of the disease was that the greenhouse temperature was too low, especially in special weather. When the greenhouse temperature was lower than 25 ℃ during the day and below 15 ℃ at night for 3 consecutive days, the root activity weakened, the nutrients absorbed could not meet the normal growth needs of the fruit, and the stress resistance of the plant decreased, which was prone to pimples. When the weather is fine, although the outside temperature is very low, as long as the light is good, after opening the grass, the temperature in the shed rises very quickly. As the pericarp is heated first, there is a great difference in temperature between the peel and the pulp at 9: 10 in the morning. In such a state for a long time, the growth rate of the pericarp is bound to exceed that of the pulp, and it will also lead to bumps in the fruit. In addition, if the amount of gibberellin is too large, it often leads to the rapid development of fruit after blooming, the ability of resistance to the outside world becomes worse, and fruit bumps are easy to occur. Preventive measures in view of these reasons, it is suggested to pay attention to the following points during management: pay attention to the heat preservation of the greenhouse, especially to keep the temperature not lower than 15 ℃ at night, so as not to cause the deterioration of root activity. On a sunny day, release the air to the shed 1 hour after opening the clover, giving the shed a slow heating process so as not to cause drastic changes in fruit temperature. Pay attention to the application of foliar fertilizer. Can be sprayed with fully nutritious foliar fertilizer or chitin and other foliar fertilizer to enhance plant stress resistance.