According to the meteorological forecast, the main cold air process in the spring sowing period is three times, which are moderate from March 26 to 28, moderate from April 1 to 3, and moderately strong from April 14 to 16. At the same time, there are 7 to 9 days of rainy weather from March 21 to April 5.
In the greenhouse of Hongye Village, Hongye Village, Bihu Town, due to the continuous rainy weather in the previous period, some seedlings were rotten in the ground. In this regard, agricultural technology experts have provided guidance.
Zhou Jinlian, deputy director of the seed management station of the Agricultural Bureau of Lishui City, must control the humidity after continuous rainy days. The humidity in the field cannot be placed high. Another is ventilation. Because of the cold air, there is a lot of moisture in the air. The humidity is very high. When the air is in the air, the outside air will enter and the humidity will drop.
At the same time, the temperature in the spring sowing season is 15~16°C higher than normal. During this time, the temperature will rise rapidly, and the temperature in the greenhouse will increase rapidly. Pay more attention to ventilation.
Zhou Jinlian, deputy station manager of the seed management station of the Lishui Municipal Agriculture Bureau, if the temperature in the shed rises to 50 degrees, it will not work. It is necessary to open the air at both ends. If the weather temperature is particularly high, the side should be ventilated.
In addition, greenhouse cultivation can also promote the application of carbon dioxide-enhanced technology, produce carbon dioxide through straw fermentation, increase the concentration of carbon dioxide in the greenhouse, and improve the efficiency of crop photosynthesis. At the same time, this technology can also cope with the cold.
Lishui City Agricultural Bureau soil and fertilizer plant protection station station Zhou Xiaofeng Lishui cold spring is very serious, after the temperature is high, suddenly a few days is very cold, the greenhouse inside do two "reactors", (can) improve the temperature in the greenhouse, solve the cold problem.
Moreover, this technology is easy to operate and low in cost.
Zhou Xiaofeng, the director of the Soil and Fertilizer Plant Protection Station of the Agricultural Bureau of Lishui City, is a local material. As long as the straw is filled with water, add some urea. It is a very simple device. (
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