A look at the fertility of wheat field based on fixed fertilization varieties. Where the soil fertility level in the wheat field is high, the organic fertilizer is applied in sufficient amount before planting, or the soil fertilization is applied and the fertilizer is applied. In the spring, little or no nitrogen fertilizer is applied, and only phosphorus and potassium fertilizers are applied. Where soil fertility is poor, fertilization is affected by rainy rain before sowing, so that the wheat field with insufficient application should be applied with some nitrogen fertilizer, and combined with phosphorus and potassium fertilizer, fully satisfying the demand for fertility of wheat jointing and heading.
Second, look at the time of fertilization at the development stage of wheat seedlings. According to the growth and development stage of wheat in the Yellow River Basin, the best time for applying joint fertilizer is generally from late February to early March. At this time, fertilization can promote the formation of panicles and increase the rate of ear formation. Promote the differentiation of spikelets and florets, and strive for more large spikes. At the same time promote the growth of the top three leaves. Therefore, fertilization at this stage is the maximum effect period of winter wheat fertilization. At this stage, the length of the first internode of the main stem of the wheat plant has been stabilized, and the second section is elongating. After fertilization, it will not cause the base internode to stretch too long and weaken the lodging resistance of the wheat, which can only promote the robust growth of the wheat. Conducive to jointing and heading, increase the number of acres of ear.
Third, look at the growth of the young crops. According to the spring wheat seedling growth, a reasonable amount of fertilizer is determined. Where wheat leaves are green, leaves are drooping, no de-fertilization, and large populations of wheat, generally do not apply nitrogen fertilizer or less nitrogen fertilizer, can apply 10 to 12 kg of phosphorus and potassium fertilizer; where soil fertility is poor, affected by overcast rain Seeding is late, the seedlings are poor, the number of tillers per plant is small, and the number of small wheat fields should be 6-8 kg per mu or 15-18 kg of ammonium bicarbonate, and with the application of superphosphate and potassium chloride. Each 5 to 6 kilograms, or 1000-2000 kilograms of biogas slurry fertilizer per acre, promotes the rapid growth of wheat seedlings and increases the rate of tillering.
Fourth, look at the climate and soil conditions to apply fertilization methods. First, when the topdressing is selected, the weather is fine at noon. Second, the wheat fields with irrigation conditions can be filled with water immediately after application, or they can be applied with water. Third, the fields without irrigation conditions must be used for deep application. The depth of fertilization should reach 5~8 cm or more, and the buckwheat should be immediately after application to prevent the fertilizer from volatilizing and improve the fertilizer utilization rate. The fourth is that the rain can be directly removed into the wheat field before the rain; the fifth is to apply the bio-liquid fertilizer and have the irrigation It can be applied with water, the dry land can be directly poured into the wheat pocket, and then covered with soil; the sixth is the top dressing, spraying 0.2%-0.3% potassium dihydrogen phosphate solution at the jointing stage, the spray volume per amu is 40-50 kg .
Second, look at the time of fertilization at the development stage of wheat seedlings. According to the growth and development stage of wheat in the Yellow River Basin, the best time for applying joint fertilizer is generally from late February to early March. At this time, fertilization can promote the formation of panicles and increase the rate of ear formation. Promote the differentiation of spikelets and florets, and strive for more large spikes. At the same time promote the growth of the top three leaves. Therefore, fertilization at this stage is the maximum effect period of winter wheat fertilization. At this stage, the length of the first internode of the main stem of the wheat plant has been stabilized, and the second section is elongating. After fertilization, it will not cause the base internode to stretch too long and weaken the lodging resistance of the wheat, which can only promote the robust growth of the wheat. Conducive to jointing and heading, increase the number of acres of ear.
Third, look at the growth of the young crops. According to the spring wheat seedling growth, a reasonable amount of fertilizer is determined. Where wheat leaves are green, leaves are drooping, no de-fertilization, and large populations of wheat, generally do not apply nitrogen fertilizer or less nitrogen fertilizer, can apply 10 to 12 kg of phosphorus and potassium fertilizer; where soil fertility is poor, affected by overcast rain Seeding is late, the seedlings are poor, the number of tillers per plant is small, and the number of small wheat fields should be 6-8 kg per mu or 15-18 kg of ammonium bicarbonate, and with the application of superphosphate and potassium chloride. Each 5 to 6 kilograms, or 1000-2000 kilograms of biogas slurry fertilizer per acre, promotes the rapid growth of wheat seedlings and increases the rate of tillering.
Fourth, look at the climate and soil conditions to apply fertilization methods. First, when the topdressing is selected, the weather is fine at noon. Second, the wheat fields with irrigation conditions can be filled with water immediately after application, or they can be applied with water. Third, the fields without irrigation conditions must be used for deep application. The depth of fertilization should reach 5~8 cm or more, and the buckwheat should be immediately after application to prevent the fertilizer from volatilizing and improve the fertilizer utilization rate. The fourth is that the rain can be directly removed into the wheat field before the rain; the fifth is to apply the bio-liquid fertilizer and have the irrigation It can be applied with water, the dry land can be directly poured into the wheat pocket, and then covered with soil; the sixth is the top dressing, spraying 0.2%-0.3% potassium dihydrogen phosphate solution at the jointing stage, the spray volume per amu is 40-50 kg .
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