Greenhouse greenhouse planting large cherry seedlings greenhouse greenhouse winter Harbin green greenhouse greenhouse

Greenhouse greenhouse planting of large cherry seedlings greenhouse greenhouse Harbin green greenhouse in winter
Preventive measures for low-temperature chilling damage to vegetables in greenhouses, indoor heating. When the outside temperature drops significantly, firewood or coal can be temporarily used to burn it through stoves, flues and Direct heat dissipation increases room temperature. Where conditions permit, hot water, hot air, and steam discharged from wineries, paper mills, smelters, etc. can be used as heat sources for greenhouses. To increase the application of thermal organic fertilizer, that is, before planting vegetables, bury a thick layer of semi-rotted thermal organic fertilizer (such as horse, donkey, sheep dung, etc.) deep underground. . Outdoor insulation. Set up wind barriers around the greenhouse to reduce wind speed. Build soil around the greenhouse and increase the thickness of the greenhouse walls. Dig a trench around the greenhouse, fill the trench with slag, rice husks, etc., and cover the top of the trench tightly to keep the trench dry. Increase the covering of the greenhouse, such as thickening thatch (curtain), etc. Do a good job in connecting and caulking all parts of the greenhouse to prevent cold wind from intruding. Try to strive for a longer lighting time. If you can get sunlight, you should immediately remove the grass thatch (curtain) and other coverings. , Indoor insulation can adopt multi-layer covering methods such as mulch covering, small arch sheds, and movable curtain surfaces for insulation. Add multiple layers of thatch (curtain) on the inside of the large perimeter to prevent wind and heat. Fluorescent lights can be installed in the greenhouse (the distance between the lights and the plant leaves) can be illuminated for - hours every day. Set up a work room at one end of the greenhouse, and hang thick curtains at the entrance and exit to prevent cold wind from intruding. Cover with drip-free film. In addition, timely foliar spraying of potassium dihydrogen phosphate, rare earth micro-fertilizers, sprays, etc. on crops such as greenhouses, as well as increased application of carbon dioxide, can not only promote an increase in yield, but also significantly enhance the resistance of vegetables to low-temperature chilling damage. .