Application of wheat seed fertilizer can be quickly absorbed by seedlings, so that early rooting of wheat seedlings, early tiller, and promote strong seedlings. The application of wheat seed fertilizer can generally increase production by more than 10%, especially in the case of thin ground, insufficient base fertilizer or late planting of misunderstandings, and the increase in production is particularly significant. When choosing seed fertilizers, care must be taken to use fast-acting fertilizers that have little side effects on seeds or young shoots. Commonly used seed fertilizers are:
Ammonium sulfate. In nitrogenous fertilizers, ammonium sulfate has low hygroscopicity and is easily dissolved. Appropriate application has no adverse effects on seed germination and seedling growth, and is most suitable for wheat seed fertilizers. Ammonium sulphate can be directly mixed with wheat seeds, 3 to 4 kilograms per acre, or 50% of the seed weight and dry mixed evenly with wheat seed.
Urea. 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. 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 and not contact seeds. Application method: First, apply. Use 5 to 7.5 kg of superphosphate per acre, mix it with 5 to 10 times of decomposed organic fertilizer, and apply 2 to 3 cm below or below the seed along the sowing groove. The second is seed dressing. Use 3 to 5 kg of superphosphate per acre, mix it well with 1 to 2 times fine dry organic fertilizer (a small amount of fine dry soil can also be used), and mix it with the dry seed of the seed after soaking. Companion.
Calcium, magnesium phosphate fertilizer. No deliquescence, no agglomeration, no corrosiveness to seeds, good physical properties, little migration after application into soil, no easy loss, easily decomposed by acid in soil solution and acid secreted from roots of crops for crop absorption and utilization , It is advisable to do wheat seed fertilizer, 5 to 10 kilograms per mu, can be used for seed dressing.
Diammonium phosphate. Phosphorus-based nitrogen and phosphorus binary compound fertilizer, with 2.5 to 3 kg per mu, applied to the sowing ditch.
Potassium dihydrogen phosphate. Is a high-quality phosphorus, potassium compound fertilizer, used as a seed fertilizer, can improve the wheat seedling phosphorus, potassium nutrition, promote the roots under the bar, is conducive to seedlings full seedlings and safe winter. Application method: First, seed dressing. Use 500g of potassium dihydrogen phosphate, 5kg of water, mix and mix 50kg of wheat seed and mix and mix for 6 hours. The second is soaking. The selected wheat seeds were soaked in a solution of 0.5% potassium dihydrogen phosphate for 6 hours, removed by drying, and sowed.
Potassium sulfate. Hygroscopicity is small, soluble in water, not easy to agglomerate, physical and easy to use. 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.
Zinc sulfate. Applying in zinc-deficient areas can increase wheat production by 10% to 18%. Seed dressing, 50 grams of zinc sulfate was dissolved in the appropriate amount of water, mixed with 50 kg of wheat seed, mixed and boring for 4 hours, dried after sowing. Soaking, the selected wheat seeds are soaked in a 0.05% zinc sulfate solution for 12 to 24 hours, removed by drying and sowing.
Borax. Application in areas with deficient boron can increase wheat production by more than 10%. Seed dressing, 10 grams of borax, soluble in 5 kg of water, mixed with 50 kg of wheat. Soaking, soak the selected wheat seeds in 0.01% to 0.05% borax solution for 6 to 12 hours.
Ammonium molybdate: In molybdenum-deficient areas, it can increase wheat production by more than 10%. For seed dressing, 2-6 g of ammonium molybdate per kilogram of wheat seed is used to warm the ammonium molybdate with 40°C warm water before seed dressing. For soaking, the selected wheat seeds can be soaked in 0.05% to 0.1% ammonium molybdate solution for 12 hours.
Ammonium sulfate. In nitrogenous fertilizers, ammonium sulfate has low hygroscopicity and is easily dissolved. Appropriate application has no adverse effects on seed germination and seedling growth, and is most suitable for wheat seed fertilizers. Ammonium sulphate can be directly mixed with wheat seeds, 3 to 4 kilograms per acre, or 50% of the seed weight and dry mixed evenly with wheat seed.
Urea. 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. 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 and not contact seeds. Application method: First, apply. Use 5 to 7.5 kg of superphosphate per acre, mix it with 5 to 10 times of decomposed organic fertilizer, and apply 2 to 3 cm below or below the seed along the sowing groove. The second is seed dressing. Use 3 to 5 kg of superphosphate per acre, mix it well with 1 to 2 times fine dry organic fertilizer (a small amount of fine dry soil can also be used), and mix it with the dry seed of the seed after soaking. Companion.
Calcium, magnesium phosphate fertilizer. No deliquescence, no agglomeration, no corrosiveness to seeds, good physical properties, little migration after application into soil, no easy loss, easily decomposed by acid in soil solution and acid secreted from roots of crops for crop absorption and utilization , It is advisable to do wheat seed fertilizer, 5 to 10 kilograms per mu, can be used for seed dressing.
Diammonium phosphate. Phosphorus-based nitrogen and phosphorus binary compound fertilizer, with 2.5 to 3 kg per mu, applied to the sowing ditch.
Potassium dihydrogen phosphate. Is a high-quality phosphorus, potassium compound fertilizer, used as a seed fertilizer, can improve the wheat seedling phosphorus, potassium nutrition, promote the roots under the bar, is conducive to seedlings full seedlings and safe winter. Application method: First, seed dressing. Use 500g of potassium dihydrogen phosphate, 5kg of water, mix and mix 50kg of wheat seed and mix and mix for 6 hours. The second is soaking. The selected wheat seeds were soaked in a solution of 0.5% potassium dihydrogen phosphate for 6 hours, removed by drying, and sowed.
Potassium sulfate. Hygroscopicity is small, soluble in water, not easy to agglomerate, physical and easy to use. 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.
Zinc sulfate. Applying in zinc-deficient areas can increase wheat production by 10% to 18%. Seed dressing, 50 grams of zinc sulfate was dissolved in the appropriate amount of water, mixed with 50 kg of wheat seed, mixed and boring for 4 hours, dried after sowing. Soaking, the selected wheat seeds are soaked in a 0.05% zinc sulfate solution for 12 to 24 hours, removed by drying and sowing.
Borax. Application in areas with deficient boron can increase wheat production by more than 10%. Seed dressing, 10 grams of borax, soluble in 5 kg of water, mixed with 50 kg of wheat. Soaking, soak the selected wheat seeds in 0.01% to 0.05% borax solution for 6 to 12 hours.
Ammonium molybdate: In molybdenum-deficient areas, it can increase wheat production by more than 10%. For seed dressing, 2-6 g of ammonium molybdate per kilogram of wheat seed is used to warm the ammonium molybdate with 40°C warm water before seed dressing. For soaking, the selected wheat seeds can be soaked in 0.05% to 0.1% ammonium molybdate solution for 12 hours.
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