Only use the right to get the best results.
There are many kinds of commonly used fertilizers, and different fertilizers are used differently. Some are suitable for bottom fertilizer, some are suitable for topdressing, some are suitable for seed fertilizer, and different crops have different demand for fertilizer. In short, fertilizer
Urea: Neutral, suitable for all kinds of soils and various crops, suitable for base fertilizer, top dressing, not for seed fertilizer.
Superphosphate: weakly acidic, can be used as base fertilizer, seed fertilizer and top dressing. It is suitable for neutral or acidic soils and should generally be applied with organic fertilizers.
Ammonium nitrate: weakly acidic, can be used as top dressing, can not be used as base fertilizer, seed fertilizer. Early spring crops should not be applied, and should not be mixed with organic fertilizers and tanning; applied to paddy fields due to denitrification, which is often used in dryland crops.
Ammonium chloride: physiological acid fertilizer, can be used as base fertilizer, top dressing, can not be used as seed fertilizer. It is suitable for calcareous soil or partially acid soil, but it should not be applied to saline soil and tobacco, grape, potato and other chlorine-free crops.
Nitrogen, phosphorus and potassium compound fertilizer: suitable for base fertilizer and early topdressing.
Calcium magnesium phosphate fertilizer: weakly alkaline, can be used as base fertilizer, generally not suitable for topdressing application, suitable for acidic soil.
Potassium sulphate: physiological acid fertilizer, can be used as base fertilizer and top dressing. Potassium sulphate is suitable for all kinds of crops, especially for chlorhexidine potassium crops. In the integrated water and fertilizer system, potassium sulfate is used in small-area fields, and it is generally difficult to dissolve. However, in large areas of farmland, the amount is large and the dissolution is slow, which seriously affects the rate of fertilization.
Potassium dihydrogen phosphate: Currently used for soaking seeds and top dressing, the effect is very good.
Nitrogen and potassium compound fertilizer: It is suitable for top dressing of the potassium-tolerant chlorine crop. If it is potassium nitrate, paddy fields should not be applied.
Potassium chloride: physiological acid fertilizer, suitable as base fertilizer, applied on acidic soil, it is best to use organic fertilizer or lime, salt and alkali should not be applied, avoid chlorine crops should not be applied.
Nitrogen and phosphorus compound fertilizer: such as ammonium phosphate, suitable for a variety of soils and various crops, should be used as a base fertilizer, if it is suitable for early application.
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