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Six measures to prevent freezing damage in wheat
1. Coverage: Before winter, spread 300-400 kilograms of wheat bran, crushed wheat straw or other botanical waste per acre between dry wheat fields in the dryland, which can keep glutinous and freeze-proof, and the cover can also improve soil and fertility after corruption. It is an effective measure for wheat drought, freezing, and production increase. 2, cover feces: After the winter wheat enters into a layer of manure, the masses call it "warm dung manure", you can avoid wind, heat preservation, antifreeze, and wheat seedlings turn green growth supplement nutrients. The thickness of manure is preferably 3 to 4 cm. In the case of insufficient manure, late barley fields, shallow-sowing wheat fields, sandy wheat fields, and wheat fields sown with weak springs are given priority. 3, rammed soil encircling the roots: in the winter before the end of the growth of the wheat seedlings, combined with ramming soil encircling the roots, can effectively prevent winter wheat frozen. In severely frost-damaged years, the antifreeze effect of rammed soil is particularly obvious, and it can generally increase production by 5% to 10%. 4, winter irrigation anti-freeze: light consumption is not frozen poured early, frozen light is not too late, the night of freezing and drinking just right. That is, before the arrival of cold air, a winter irrigation is performed. 5. Anti-freezing of smoke and smoke: Pay close attention to the changes in the weather. Before the arrival of the cold current, collect smoked tobacco such as wheat stubble and straw in the field in the evening. 6, spraying chlormequat (Zhuangfeng amine, Maiyefeng, paclobutrazol): In the winter wheat during the freezing injury, sprayed with 0.3% to 0.5% Chlorella solution, can inhibit plant growth, resistance or reduce the occurrence of frost damage.