Spray conditioner to ensure chamber temperature

According to Director Zhang Fenjun, a horticultural engineering expert, most of the sheds were small arch sheds, mainly because the sheds were small and the management could not keep up. The middle arch sheds and greenhouses were mainly due to poor management in the early stage, lack of sealing, and cold winds. Vegetables, watermelons and other crops are frozen.
Zhang Fujun said that farmers now need to strengthen the management of the later stage, and apply foliar fertilizer. When the weather is good, you can pour water properly. He suggested that farmers should not worry about replenishing the seedlings now. Some watermelon seedlings or vegetables have only been damaged by stems and leaves, and the roots are not affected. "Now it is best not to make up, the melon seedlings can be re-branched. If the branches are re-branched, the melon seedlings can grow again, and the yield may be reduced by about 20%."
Ren Qiuping, an associate professor at Liaoda Agricultural College, said that in this frost, pear and apricot flowers have been affected. Some pear flowers are black. She said that there are many pears and the fruit yield may not be affected. The apricot tree blossoms early, and it has been attacked by several cold air. The freezing damage encountered is likely to be reduced. She suggested that if cold air is coming again, the public can set up a barrier on the north side of the fruit tree, or put a shed above the fruit tree, and smoke in the orchard to raise the temperature.
Liu Zikang, head of the production section of Liaocheng Agricultural Committee, said that at present, agricultural technical experts at all levels are actively taking measures to guide production. Greenhouses and greenhouses should pay attention to the effects of low temperature and strong winds. In the face of continuous cold air, the key is to strengthen the greenhouse insulation, using multiple layers of "sheds + medium shed + small shed".
For vegetables that have suffered from freezing damage, it is necessary to spray plant growth regulators such as potassium dihydrogen phosphate, brassinolide, and Tianda 2116 in time ; the disease after the cold wave should be timely and correct to prevent the outbreak of the disease; the fruit deformed by the frost It needs to be removed in time to reduce the load on the plant and improve the ability to withstand frost.

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