The growth of cucumbers in greenhouses is mainly caused by temperature, humidity, hormone use and improper fertilization. The following measures can be used in production to prevent:
temperature control. The suitable temperature for cucumber growth and development is 25 ℃ -30 ℃, growth faster than 30 ℃, easy to cause mad growth. Therefore, the temperature of the greenhouse should be controlled between 25 ° C and 30 ° C, and should not exceed 30 ° C; the night temperature should be kept at about 18 ° C to reduce the respiratory intensity and increase the accumulation of dry matter.
Control humidity. The suitable air humidity for cucumber growth and development is about 85%. When this index is exceeded, it should be ventilated and dehumidified immediately; it is best to ventilate for 1-2 hours in the evening when the temperature is not too low to reduce the humidity in the shed at night to prevent Crazy growth, promote flowering and melon.
Hormone protect melon. After cucumbers form melons, the vegetative growth of the plants will be inhibited. Therefore, we must try to make the first batch of flowers sit more melons, the first batch of flowers sit less melons also easily lead to crazy growth. According to the experiment, the use of 100 times the liquid and spray flowers of Baoguoling hormone can make cucumbers sit more melons and save melons. In this way, it can not only bring the market to the market early, increase the early yield, but also effectively prevent the plants from growing.
Fertilize reasonably. In the case of ensuring the supply of nitrogen in the soil, more phosphorus and potassium fertilizers should be applied appropriately to prevent the application of a large amount of nitrogen fertilizer.
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