Foliar spray application of wheat after spring can promote the robustness of the wheat seedlings, increase the resistance to stress, accelerate the growth rate, and increase the rate of ear formation and increase the yield. According to experience, the fertilizers that can be used for wheat foliar application are:
1. Potassium dihydrogen phosphate. It has strong roots, strong stalks, and seedling-promoting effects. It can be sprayed at the seedling stage, jointing stage, booting stage and flowering stage. The concentration is 0.2%~0.4% of aqueous solution, spraying 60~70 kg per 667 square meters. For wheat seedlings with early sowing, high density and strong growth, it should be sprayed early to promote the firmness and firmness of the wheat stalks and enhance the lodging resistance.
Second, potassium sulfate. In the wheat field with too much nitrogen fertilizer and high soil fertility, the corn seedlings with large shade can be sprayed with 1%~2% potassium sulfate aqueous solution, 60~75 kg per 667 square meters to prevent the wheat from growing. For wheat fields with weak seedlings and lack of nitrogen, phosphorus and potassium, it should be mixed with 2% urea, 2% superphosphate and 1%~2% potassium sulfate.
Third, zinc sulfate. Calcareous soil, sandy soil, and farmland with excessive application of phosphate fertilizer are generally prone to zinc deficiency in wheat, which is characterized by chlorosis of leaves, whitening of heart leaves, dwarfing of plants in the middle and late stages, and blackening of roots, which seriously hinder wheat. The strain grows normally. In this regard, 0.1%~0.2% zinc sulphate solution can be sprayed, especially in the seedling stage and jointing stage, and the fertilizer solution is 60~70 kg per 667 square meters.
Fourth, strong spirit. This is a foliar fertilizer containing nitrogen, phosphorus and potassium as main elements and iron, titanium, manganese, copper, zinc, magnesium, calcium and active substances. It can promote the growth of wheat and enhance cold resistance, drought resistance, disease resistance and resistance. The ability to pour is preferably sprayed at the seedling stage, booting stage and flowering stage, with a concentration of 160-200 times, and 50-60 kg of spray fertilizer per 667 square meters.
Wheat foliar spray fertilizer should be sprayed in the morning and evening, as it is carried out in the morning and evening, because wheat is generally flowered at 9-11 am and 3-6 pm. If the fertilizer is sprayed at these two times, the pollen and pollen tube will be The water swells and ruptures, and cannot be fertilized and affects the yield. In addition, spray fertilizer cannot be carried out before the rain.
Source: Henan Wheat Net
1. Potassium dihydrogen phosphate. It has strong roots, strong stalks, and seedling-promoting effects. It can be sprayed at the seedling stage, jointing stage, booting stage and flowering stage. The concentration is 0.2%~0.4% of aqueous solution, spraying 60~70 kg per 667 square meters. For wheat seedlings with early sowing, high density and strong growth, it should be sprayed early to promote the firmness and firmness of the wheat stalks and enhance the lodging resistance.
Second, potassium sulfate. In the wheat field with too much nitrogen fertilizer and high soil fertility, the corn seedlings with large shade can be sprayed with 1%~2% potassium sulfate aqueous solution, 60~75 kg per 667 square meters to prevent the wheat from growing. For wheat fields with weak seedlings and lack of nitrogen, phosphorus and potassium, it should be mixed with 2% urea, 2% superphosphate and 1%~2% potassium sulfate.
Third, zinc sulfate. Calcareous soil, sandy soil, and farmland with excessive application of phosphate fertilizer are generally prone to zinc deficiency in wheat, which is characterized by chlorosis of leaves, whitening of heart leaves, dwarfing of plants in the middle and late stages, and blackening of roots, which seriously hinder wheat. The strain grows normally. In this regard, 0.1%~0.2% zinc sulphate solution can be sprayed, especially in the seedling stage and jointing stage, and the fertilizer solution is 60~70 kg per 667 square meters.
Fourth, strong spirit. This is a foliar fertilizer containing nitrogen, phosphorus and potassium as main elements and iron, titanium, manganese, copper, zinc, magnesium, calcium and active substances. It can promote the growth of wheat and enhance cold resistance, drought resistance, disease resistance and resistance. The ability to pour is preferably sprayed at the seedling stage, booting stage and flowering stage, with a concentration of 160-200 times, and 50-60 kg of spray fertilizer per 667 square meters.
Wheat foliar spray fertilizer should be sprayed in the morning and evening, as it is carried out in the morning and evening, because wheat is generally flowered at 9-11 am and 3-6 pm. If the fertilizer is sprayed at these two times, the pollen and pollen tube will be The water swells and ruptures, and cannot be fertilized and affects the yield. In addition, spray fertilizer cannot be carried out before the rain.
Source: Henan Wheat Net
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