Although the high temperature is no longer coming to the greenhouse management is strict
The recent high temperature weather has slightly decreased compared with the previous period, but the temperature in the greenhouse still maintains a high level. Many vegetable farmers have reported that the vegetables in the greenhouse have recently caused undesirable phenomena such as leaf edge degeneration, leaf curling, and leaf edge water loss, which seriously affected the normal growth of plants. In this regard, Zhuang Canran, a vegetable expert from Northwest A&F University, suggested that the management of greenhouse vegetables should be strengthened in the following aspects.
Ventilation: The air in the shed is not circulated, which is easy to cause the vegetable plants to lose water and wilting, and the growth disorders. Zhuang Canan suggested that the majority of vegetable farmers should do the ventilation and cooling of the greenhouse vegetables, and open the shed door on a sunny day and night. Roll up to the shed shoulder to increase ventilation.
Watering: small water should be used for pouring, in summer and autumn, micro-drop micro-spray technology can be applied to vegetable production, which can effectively alleviate the impact of drought on vegetable production, and resist disease and save vegetables; save labor, labor, water, and labor intensity. It can also humidify and cool down, improve the microclimate in the field, regulate soil water, fertilizer, gas and heat, promote the growth of vegetables, and improve the commercialization of leafy vegetables in summer and autumn.
Spraying foliar fertilizer: sprayed with 27% high-fat film emulsion 100 times, Apollo 963 chitin 1500 times and Tianda 2116, amino acid, fulvic acid foliar fertilizer, etc., can form a protective film on the surface of the leaf to improve the shed The tolerance of vegetables to high temperature and strong light.
Zhuang Canran reminds the vegetable farmers that in the high temperature conditions of the shed, they must pay attention to safe production when they are engaged in vegetable management. First, when there is high temperature weather, try not to enter the shed; second, firstly, ventilation and cooling, then enter the shed; third, continuous operation time is not easy. If it is too long, if it is unsuitable, it should be immediately ventilated; fourthly, pests and diseases should be properly selected and used, and high-toxic and high-residue pesticides should be banned. At the same time, safe operation should be carried out to prevent pesticide poisoning accidents.
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