Harmless agricultural products can apply these fertilizers

In the process of producing pollution-free agricultural products, we must follow the principle of optimizing formula fertilization and organic fertilizers to maintain or increase fertility and soil biological activity. All fertilizers, especially those rich in nitrogen, should not have adverse consequences on the environment and crops (nutrition, taste, quality and plant resistance). Fertilizer types allowed:

1. Organic fertilizer: compost, manure, manure, biogas fertilizer, green manure, crop straw, and cake fertilizer.

2. Inorganic fertilizers: mineral nitrogen fertilizer, mineral potassium fertilizer, mineral phosphate fertilizer (phosphorus fines), limestone; nitrogen fertilizers (including ammonium bicarbonate, ammonium sulfate) and phosphate fertilizers (including phosphoric acid) formulated according to the optimized formula fertilization technology program guided by soil fertilizer and agricultural technology department Diammonium, monoammonium phosphate, superphosphate, calcium magnesium phosphate, potassium fertilizer and other inorganic compound fertilizers that meet the requirements.

3. Trace Element Fertilizers: Fertilizers mainly formulated with trace elements such as copper, zinc, iron, manganese, boron, molybdenum, and beneficial elements.

4. Medium Element Fertilizer: Fertilizer mainly made up of calcium, magnesium, sulfur, silicon and other medium-sized elements.

5. Microbiological fertilizers: Plant growth assistant fertilizers, using natural organic extracts or broths for inoculating beneficial bacteria, adding some humic acid, alginic acid, amino acids, vitamins, sugars and other fertilizers (including active four-dimensional fertilizer, soil activity) Agent and rhizobia, nitrogen-fixing bacteria, phosphorus bacteria, silicate bacteria and other microbial compound fertilizer).

6. Compound Fertilizers: Organic and inorganic compound fertilizers formulated with two or more of the above fertilizers in a scientific formula.

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