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冬季受强冷空气或寒潮影响,降温剧烈,易出现低温霜冻害。蔬菜受冻后该如何补救?追施速效肥受冻蔬菜缓苗恢复后,可及时追施速效氮肥及磷钾肥,促进植株恢复生长,提高机体的活力,减少损失。低温来临前,可喷洒0.2%~0.3%的磷酸二氢钾水溶液1~2次,以提高抗寒力;或每亩泼施稀薄人畜粪水肥400~500千克,以减轻土壤的结冰程度,降低冻害;或在菜地厢间撒施火土灰或草木灰2500~5000千克,既防寒防冻,又起到增施
Affected by intense cold air or cold wave in winter, the temperature drops rapidly and the frost damage easily occurs. After the freezing of vegetables, how to remedy? Quick recovery fertilizer Huanmiao Huanmiao recovered, the timely recovery of available nitrogen and phosphorus and potassium fertilizer to promote plant growth and restore the body’s vitality and reduce losses. Before the arrival of the low temperature, 0.2% ~ 0.3% of potassium dihydrogen phosphate aqueous solution can be sprayed 1 or 2 times to improve the cold resistance; or 400 ~ 500 kg of diluted human and animal manure fertilizer per acre to reduce the degree of soil icing, Reduce frost damage; or in the vegetable fields between the soil Caesar ash or ash 2500 to 5000 kg, both cold and antifreeze, but also to increase