Although high temperature is no longer necessary to manage greenhouses
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 suffered from unpleasant phenomena such as leaf scorch, curled leaves, and water loss at the leaves, which seriously affected the normal growth of the plants. In response, Zhuang Canyan, a vegetable expert at the Northwest Agriculture and Forestry University, suggested that greenhouse vegetable management should be strengthened in the following areas in the near future.
Ventilation: The air in the shed does not circulate, and it is easy to cause dehydration, wilting, and maladjustment of vegetable plants. Zhuang Canran recommends that the majority of vegetable growers should do well in ventilation and cooling of greenhouses and shelter from rain. Open the shed door and open the door on both sides of the shed at sunny days. Roll up to the shoulder to increase ventilation.
Watering: The water should be poured in a small amount, and in summer and autumn, micro-droplet micro-spraying technology should be applied to vegetable production, which can effectively reduce the impact of drought on vegetable production, and protect food from disasters; 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 conditions, promote vegetable growth, and greatly improve the commercial quality of leaf vegetables in summer and autumn.
Sprayed foliar fertilizer: 100% of the leaves sprayed with 27% high-fat film emulsion, 1500 times of Apollo 963 chitin, Tianda 2116, amino acid, fulvic acid foliar fertilizer, etc., can form a protective film on the surface of the leaves and improve The tolerance of vegetables to high temperature and strong light.
Zhuang Chanran reminded the farmers that in the high temperature conditions in the greenhouse, they must pay attention to safe production when they are engaged in vegetable management. First, when high temperature weather occurs, try not to enter the shed. The second is to reduce the temperature first and then enter the shed. Third, the continuous operation time is not easy. If it is too long, if there is any discomfort, it shall be immediately released from the greenhouse; Fourth, pesticides should be correctly selected and used to prevent and treat pests and diseases, and high-toxicity, high-residue pesticides should be disabled. At the same time, safe operation should be conducted to prevent pesticide poisoning accidents.
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