According to the characteristics of soybean fertilizer, rational fertilization is one of the main cultivation measures for high quality and high yield of soybean. Soybean fertilization techniques are as follows:
There are two kinds of seed dressing methods commonly used for seed dressing. One is the rhizobium powder seed dressing, that is, 20 to 30 grams of rhizobium powder per 50 kg of seeds and 250 grams of water. Mix the seeds and the bacteria powder thoroughly in the pot. Sowing after drying; the second is micro-fertilizer seed dressing, weighing 5 to 10 grams of ammonium molybdate per 5 kg of seeds before sowing, fully dissolving ammonium molybdate with 250 g of warm water, then spraying the fertilizer on the seeds, try to make The fertilizer is covered with seeds and can be sown after drying. In the boron-deficient or zinc-deficient plots, seed dressing can be carried out with 0.05% borax solution or 0.1% zinc sulfate solution.
Re-application of base fertilizer soybean base fertilizer is better with organic fertilizer. Generally, 2000-3000 kg of high-quality farmyard manure is used per mu, and a small amount of fertilizer can be used. However, due to the tight summer time, the application of base fertilizer in soybeans is mainly based on chemical fertilizers. In plots with low soil fertility, nitrogen should be applied 6 to 7 kg, and phosphorus and potassium should be 10 to 12 kg each; for fertile land, nitrogen should be 4 to 5 kg, and phosphorus and potassium should be 8 to 10 kg each. After tilling, plowing.
There are two situations in which the topdressing and topdressing are applied. First, the plots that have not been applied to the base must be topdressed. Generally, the urea is 3 to 4 kg or 10 to 15 kg of ammonium carbonate, 20 kg of superphosphate and 10 kg of potassium. Nitrogen fertilizer can be chased half in the seedling stage and the initial flowering stage. Phosphorus and potassium fertilizers should be chased one by one, and the method of chasing should be applied as a ditch. The second is to apply the base fertilizer to the plot, according to the seedlings, if the seedlings are weak and yellow, the amount of nitrogen fertilizer can be supplemented to prevent defatting. Flowering and pod-forming period is the period when soybeans need most fertilizer. Therefore, it is necessary to re-apply a topdressing fertilizer. It can chase urea 2 to 5 kg per mu, and potash fertilizer 7 to 8 kg, and apply it about 5 days before flowering.
(Henan Agricultural Vocational College Shen Yanli)
Farmers Daily
There are two kinds of seed dressing methods commonly used for seed dressing. One is the rhizobium powder seed dressing, that is, 20 to 30 grams of rhizobium powder per 50 kg of seeds and 250 grams of water. Mix the seeds and the bacteria powder thoroughly in the pot. Sowing after drying; the second is micro-fertilizer seed dressing, weighing 5 to 10 grams of ammonium molybdate per 5 kg of seeds before sowing, fully dissolving ammonium molybdate with 250 g of warm water, then spraying the fertilizer on the seeds, try to make The fertilizer is covered with seeds and can be sown after drying. In the boron-deficient or zinc-deficient plots, seed dressing can be carried out with 0.05% borax solution or 0.1% zinc sulfate solution.
Re-application of base fertilizer soybean base fertilizer is better with organic fertilizer. Generally, 2000-3000 kg of high-quality farmyard manure is used per mu, and a small amount of fertilizer can be used. However, due to the tight summer time, the application of base fertilizer in soybeans is mainly based on chemical fertilizers. In plots with low soil fertility, nitrogen should be applied 6 to 7 kg, and phosphorus and potassium should be 10 to 12 kg each; for fertile land, nitrogen should be 4 to 5 kg, and phosphorus and potassium should be 8 to 10 kg each. After tilling, plowing.
There are two situations in which the topdressing and topdressing are applied. First, the plots that have not been applied to the base must be topdressed. Generally, the urea is 3 to 4 kg or 10 to 15 kg of ammonium carbonate, 20 kg of superphosphate and 10 kg of potassium. Nitrogen fertilizer can be chased half in the seedling stage and the initial flowering stage. Phosphorus and potassium fertilizers should be chased one by one, and the method of chasing should be applied as a ditch. The second is to apply the base fertilizer to the plot, according to the seedlings, if the seedlings are weak and yellow, the amount of nitrogen fertilizer can be supplemented to prevent defatting. Flowering and pod-forming period is the period when soybeans need most fertilizer. Therefore, it is necessary to re-apply a topdressing fertilizer. It can chase urea 2 to 5 kg per mu, and potash fertilizer 7 to 8 kg, and apply it about 5 days before flowering.
(Henan Agricultural Vocational College Shen Yanli)
Farmers Daily
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