21 0 0 fertilizer

Ammonium sulfate 21 0 0 fertilizer is a white crystal, and if it is produced from coking or other petrochemical production by-products, it is turquoise, brown or light yellow. The content of ammonium sulfate is 20-21%, containing a very small amount of free acid.

Ammonium sulfate fertilizer is easily soluble in water and has low hygroscopicity, but it will also absorb moisture and agglomerate in rainy seasons, corroding packaging bags, and pay attention to ventilation and drying when storing. Ammonium sulfate is stable at room temperature, but when alkaline substances act on it, like all ammonium nitrogen fertilizers, ammonia gas will be released. After ammonium sulfate is applied to the soil, the acidity of the soil will gradually increase through the selective absorption of crops, so ammonium sulfate is the same as a physiologically acidic fertilizer.

Ammonium sulfate fertilizer 21 0 0 fertilizer is suitable for general soil and various crops, and is often used in ammonium-loving crops. Ammonium sulfate fertilizer can be used as base fertilizer, top dressing and seed fertilizer.

When used as topdressing, it is more economical and effective to apply it to the soil near the root system in the first few days of crop growth, but it must be applied when there are no water drops on the stem and leaf surface, so as not to damage the crop.

When used in rice, it should be applied deeply or combined with plowing to avoid the loss of chlorine due to the simultaneous progress of nitrification and denitrification.

The amount of 21 0 0 fertilizer ammonium sulfate used as seed fertilizer must be small, generally 10 catties per mu, mixed with 5-10 times the decomposed organic fertilizer or loam soil, and be careful not to contact with the seeds.

When transplanting rice seedlings, 5-10 catties of ammonium sulfate fertilizer can be used per mu, combined with decomposed organic fertilizers, superphosphate, etc., to make a thin slurry, which is used to dip the roots of the seedlings, and the effect is very good.