In the fall, the lighting time is shortened, and the temperature and light in the greenhouse cannot meet the normal growth needs of the shed. In the event of disaster weather, low temperature and low temperature, sudden drop in ground temperature, roots are inhibited, the vegetative growth potential is weakened, there is a phenomenon of stalks in the middle and lower culms, the upper stalk becomes thinner, the leaves become smaller, and the tendrils are weaker.
Measures: Prevention should be based on preserving temperature, can be opened shallow ditch coating, or cover 3 to 4 cm wheat straw, take micro-irrigation measures, can prevent sudden drop in temperature, reduce damage to the root system.
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