Wheat seed fertilizer selection points
When choosing seed fertilizers, care must be taken to use fast-acting fertilizers that have little side effects on seeds or young shoots. In the existing nitrogen fertilizers, ammonium sulfate is small in hygroscopicity and easy to dissolve. The appropriate application has no adverse effects on seed germination and seedling growth, and is most suitable for wheat seed fertilizers.
High urea nitrogen content, but with biuret, affecting seed germination and seedling growth, it generally should not be mixed with the seed sowing. If you need to use urea as a fertilizer, you must use high-quality urea, the amount can not be too large, 2 to 3 kg per acre, it is best to use the bar, after the first application of fertilizer seeding, try to avoid contact with the seed and fertilizer.
Superphosphate is easily dissolved, but its mobility in the soil is small. Its range is generally 1 to 3 centimeters, and most of them are concentrated in 0.5 centimeters of fertilization point. Contains free acid, corrosive, easy to absorb hygroscopic agglomerate, applied to the soil, easy to be chemically fixed in the soil and reduce the effectiveness of phosphorus. When selecting a seed fertilizer, you must select premium quality products, 10 to 15 kilograms per mu, and do not have access to seeds. It is also possible to neutralize acidity by mixing 10% of plant ash with superphosphate. The best method is to mix it with high-quality screening farmhouse fertilizer.
Calcium, magnesium, and phosphate fertilizers do not deliquify and accumulate. They are non-corrosive to seeds and have good physical properties. After they are applied to soil, they are less mobile and are not easily lost. They are easily decomposed by acid in soil solution and the acid secreted from the roots of crops. For the absorption and utilization of crops, it is advisable to use wheat seed fertilizer, which is 5 to 10 kilograms per mu, which can be used for seed dressing.
Potassium sulphate has low hygroscopicity, is easily soluble in water, is not easy to agglomerate, has good physical properties and is easy to apply. In potassium-depleted soil, potassium sulfate can be used as a seed fertilizer. After potassium sulfate is applied to soil, potassium ions can be directly absorbed and utilized by crops, and can also be adsorbed by soil colloids. The dosage per acre is 1.5-2.5 kg. It should be noted that potassium sulfate has a high content of fertilizers and cannot be in contact with the seeds so as not to burn seedlings. Be sure to control the amount of fertilizer, and the distance between the fertilizer and the seeds is 3 to 5 cm.
Fully cooked manure, cattle and sheep manure, pig manure, chicken manure, rabbit manure, etc., can be used as seed fertilizer after being crushed and sifted. As farmyard manure contains more organic matter, it can improve the soil and fertility, and it can be applied with wheat seed dressing. In addition, the use of potassium dihydrogen phosphate or bacterial fertilizer seed dressing, or use of fertilizer to make wheat seed fertilizer, all have the effect of increasing production.
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