Ammonium sulfate, also known as ammonium sulfate, is the first nitrogen fertilizer produced and used at home and abroad. It is usually regarded as a standard nitrogen fertilizer with a nitrogen content between 20% and 21%. It is easy to store and is more soluble in water. Ammonium sulfate is a physiological acid quick-acting nitrogen fertilizer, which is generally suitable for crops such as wheat, rice, corn, cotton, fruit trees and vegetables. Application method of ammonium sulfate: 1. As base fertilizer When ammonium sulfate is used as base fertilizer, deep application of soil is needed to facilitate crop absorption. 2. For topdressing, determine the amount of topdressing fertilizer for ammonium sulfate according to different soil types. For soils with poor water retention and fertilizer retention, it should be applied in stages, and the dosage should not be too much. For soils with good water retention and fertilizer retention, each dosage can be appropriate. some more. The soil moisture also has a great influence on the fertilizer efficiency. Especially when applying ammonium sulfate in dry land, it is necessary to pay attention to timely watering. When the paddy field is used for topdressing, it should be drained and dried first, and attention should be paid to the combination of tillage and simultaneous application. There are also significant differences in the application of ammonium sulphate to different crops. For use in fruit trees, it can be used for ditching, ring application or hole application. 3, more suitable for seed fertilizer. Ammonium sulfate has no adverse effect on seed germination. Pay attention to the following problems when applying ammonium sulfate: 1. Do not contact or mix ammonium sulfate fertilizer with other alkaline fertilizers or alkaline substances to prevent reducing fertilizer efficiency. 2. It is not advisable to apply ammonium sulfate for a long time on the same piece of cultivated land, otherwise the soil will become acidified and knotted. 3. Ammonium sulfate is not suitable for application on acidic soils.
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