This situation is caused by excessive growth of nutrients and incoordination of plant growth. The first preventive measure is to improve the use of fertilizers. It should be noted that starting from the base fertilizer, the proportion of nitrogen fertilizer should not be too high and the amount should not be too large. If there is more manure in the base fertilizer, no other nitrogen fertilizer can be applied. After planting, if the seedlings grow more prosperous, it is necessary to suspend topdressing, and accordingly increase the supply of potassium fertilizer; second, pay attention to night temperature control. After the discovery of prosperous growth, it should be noted that control of the greenhouse temperature, especially night temperature, should not be too high, increase the temperature difference between day and night, and control the water control fertilizer, and then strengthen the fertilizer and water management until the first two spikes are stable; third, hormone control is prosperous. When the plants are prosperous, they can be sprayed with 1500 times the amount of chlorpyrifos and 2000 times more. Medical Cotton Swabs,Sterilized Medical Cotton Swabs,Disposable Medical Cotton Swabs,Single Use Medical Cotton Swabs Henan Xianghe Medical Materials Co., Ltd. , https://www.xiangheweicai.com