Organic fertilizer is also called farmyard fertilizer. In the production of fruit trees, compost, coil fertilizer, manure fertilizer, green manure, cake fertilizer, river mud, poultry manure, human waste, and soil fertilizer are commonly used. Most organic fertilizers need to be decomposed by microorganisms before they can be absorbed by the roots of the plants. Therefore, they are also called "late-acting fertilizers" and can be used as base fertilizers. Organic fertilizer can effectively improve the physical and chemical properties of the soil, improve soil water retention and fertilizer retention, and improve soil ventilation.
First, compost: crop straw, weeds, stems and leaves, leaves, poultry manure, etc. as materials, stacked in layers, decomposed and decomposed by microorganisms. In the process of microbial reproduction, it is necessary to maintain appropriate temperature, moisture, aeration, pH, etc., in order to facilitate the reproductive activities of microorganisms.
Second, the ring fertilizer, manure: including pigs, cattle, sheep, chickens, ducks and other livestock, livestock and feces, rich in nitrogen, phosphorus, potassium and other nutrients, fermented and fermented as a base fertilizer application.
Third, human excrement: decomposed human excrement, is a quick-acting nitrogen fertilizer, containing more nitrogen, phosphorus, potassium and organic matter can be combined with quick-acting phosphorus and potassium fertilizer. The volatile loss of ammonia in the excrement should be closed and stored. If 2-3% of superphosphate is added, it can not only fix nitrogen, but also supplement the phosphate in human excrement. Human excrement can be applied by ditch or acupoint. Immediately after application, watering and covering the soil to prevent evaporation. Note that unfertilized human excrement is easy to burn root and should not be applied directly.
4. Mud fertilizer: The silt of the ditch, pool, marsh, river, pond and urban sewers are all muddy. Containing more organic matter, it is a delayed-acting fertilizer and can be used as a base fertilizer for orchards.
5. Green manure: If the orchard is used as a green manure plant, it can be used locally to make fertilizer and be used locally. It does not need to be piled up, tanning, and does not require field transportation, which can save labor. The green manure crops between the orchard rows are dwarf poles, with many tillers, well-developed roots, and legumes with lush stems and leaves are suitable for green manure, avoiding shading of fruit trees.
Sixth, urban garbage: consists of the meridian shell chicken fish scraps and leaves, leaves, eggshells, furnace ash and so on. The garbage mainly from the family, vegetable market and road clearing is a compound organic fertilizer. The three elements of nitrogen, phosphorus and potassium are similar to compost and manure. After application, the physical structure of clay and loose soil can be improved.
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