Sample Free Cheap Price Agriculture Grade Granular NPK/MKP Fertilizer

1. ammonium carbide: weakly alkaline, can be used as base fertilizer and topdressing, can not be used as seed fertilizer, and should be deeply applied or covered with soil about 10 cm when applied.
2. urea: neutral, suitable for all kinds of soil and various crops, should be used as base fertilizer, topdressing fertilizer, can not seed fertilizer.
3. superphosphate: weak acid, can be used as base fertilizer, seed fertilizer and topdressing, it is suitable for neutral or acidic soil, generally should be combined with organic fertilizer or ash application, topdressing to its filter liquid root spray.
4 AN fertilizer: weak acid, can be used as topdressing, can not be used as base fertilizer, seed fertilizer. Early spring crops should not be applied, and should not be mixed with organic fertilizer and retting; It is often used in dryland crops because of its poor effect on paddy fields due to denitrification.
5, ammonium chloride: physiological acid fertilizer, can be used as base fertilizer, topdressing, can not be used as seed fertilizer. It is suitable for calcareous soil or partially acidic soil, but it is not suitable for saline-alkali soil and chlorin resistant crops such as tobacco, grape and potato. 6.Nitrogen, phosphorus and potassium compound fertilizer: it should be used as base fertilizer and early topdressing.
7. calcium magnesium phosphate fertilizer: weak alkaline, can be used as a base fertilizer, generally not suitable for topdressing application, suitable for acidic soil.
8. potassium sulfate: physiological acid fertilizer, as the base fertilizer, topdressing can be used, potassium sulfate is suitable for all kinds of crops, especially the avoidance of chlorin and potassium crops, should be properly applied.
9. potassium dihydrogen phosphate: at present, it is mostly used for seed soaking and root topdressing, and the effect is very good.
10. Nitrogen and potassium compound fertilizer: It should be used as topdressing for potassium-averse chlorin crops.
11.potassium chloride: physiological acid fertilizer, should be used as a base fertilizer, applied on acidic soil, it should be best combined with the application of organic fertilizer or lime, saline-alkali land should not be applied, avoid chlorin crops should not be applied.
12.nitrogen and phosphorus compound fertilizer: such as ammonium phosphate, suitable for a variety of soil and a variety of crops, should be used as a base fertilizer, if the topdressing should be applied early, as a seed fertilizer, can not be in direct contact with the seeds.

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