What are the commonly used phosphorus and potassium fertilizers and how to use them?

What are the phosphorus and potassium fertilizers? Phosphorus and potassium fertilizers are fertilizers containing phosphorus and potassium. At present, the more popular production method is to crush the (phosphorus) potassium ore to a fineness of about 100 mesh, the sieve residue is less than 15%, and to be enriched and sterilized by high temperature; together with peat, agar, glucose, sulfate, ammonium salt Molybdenum salt, mushroom material, etc. are auxiliary materials. After the compounding, the biochemical reaction is carried out in the reactor, and the granulation is carried out according to the ratio. After granulation, the biological (phosphorus) potassium fertilizer containing PK ≥ 20% can be prepared.

For example, potassium dihydrogen phosphate in chemical fertilizers contains both phosphorus and potassium, bone powder and superphosphate contain phosphorus, potassium sulfate contains potassium, horseshoes in natural fertilizer contain phosphorus, and plant ash contains potassium.

The role of phosphorus in phosphorus and potassium fertilizers

Phosphate fertilizer can make the stems and branches of trees tough, promote the formation of flower buds, flowers and colors, early fruit ripening, and can make trees grow well and develop new roots to improve cold resistance and drought resistance.

Phosphate-fertilized trees grow slowly, leaves are small, branches or tillers are reduced, flowers are small, mature late, and the leaves of the lower leaves are yellowed first and then purple-red. In the absence of phosphorus, the old leaves usually have symptoms first.

Organic fertilizers containing more phosphorus include bone meal, rice bran, fish scales, and poultry manure. Inorganic phosphate fertilizers include superphosphate, phosphate rock, calcium magnesium phosphate. The most commonly used superphosphate is often used as a base fertilizer after being mixed with organic fertilizer, and can also be used as a root dressing for flower and fruit bonsai.

Superphosphate is preferred for use in neutral or slightly alkaline soils. Not suitable for application to acid soil.

The role of potassium and potassium in phosphorus and potassium

Potassium fertilizer potassium fertilizer can make trees stem strong, improve the ability to resist pests, cold, drought and lodging, promote root development, increase bulbs, and promote fruit enlargement and good color.

Potassium deficiency can cause necrotic spots on the leaf margins of the trees. At the beginning, the old leaves appear spots, and the leaf edge tips begin to turn yellow, followed by dead coke necrosis. Excessive potassium fertilizer will cause shortening of the internodes, the whole plant is dwarfed, the leaves become yellow, and even die.

The most representative organic potash fertilizer is the first to use grass ash, which can be used as top dressing and base fertilizer. It contains available potassium (K2O) 5~10%|phosphorus (P2O5) 2~3%, and also contains other trace elements. Grass ash is an alkaline fertilizer. Inorganic potassium fertilizers such as potassium chloride and potassium sulfate are acidic fertilizers and can be used as base fertilizers and top dressings.

Homemade phosphate and potash

Pour the horns, pig's trotters, bones, fish belly, poultry, fish bones, fish bones, fish scales, crab shells, shrimp shells, hair, nails, livestock horns, miscellaneous bones, and add the right amount of EM Add a small amount of water after the bacteria, keep the humidity at 60%-70%, seal, and use it after a period of decay fermentation.

It is a good potted base fertilizer. If it is brewed and fermented, it will become a phosphorus-rich vegetable fertilizer. It is a phosphorus-rich debris, which is crushed and evenly stirred in the soil, or placed in a container to ferment and become the ideal phosphate fertilizer. Used to pour vegetables in water, it will make the vegetables bright, bright, and full of fruit. Fertilizer effect can last for more than 2 years.

Eggshell phosphate

The eggs in the eggshell are cleaned, dried in the sun, chopped, and placed in a roller to be ground into a powder. Mix and mix with 1 part of egg shell powder and 3 parts of potting soil, and cultivate flowers in the upper pot. It is also a long-acting phosphate fertilizer. Generally, during the watering process after planting, the active ingredients will precipitate and be absorbed and utilized by vegetables. After the eggshell powder is planted, the flowers are large and colorful, and the fruit is full and full. It is a completely organic phosphate fertilizer.

Potash production

Drink the remaining residual tea water, Taomi water and water (preferably after fermenting with Golden Baby starter) and grass gray water, wash the milk bottle water. Waiting for a good potash, it can be used directly to pour vegetables. They all contain certain nutrients such as nitrogen, phosphorus and potassium. They are used to water vegetables, which can maintain soil water, and can add nitrogen fertilizer to plants, which can promote the development of roots and leaves. Can be used directly to water vegetables. The plant ash also contains potassium fertilizer, which can be used as a base fertilizer. Potassium fertilizer has a significant effect on improving the ability of flowers to resist lodging and resist pests and diseases.

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Sweet corn. The light green outer leaves of sweet corn are yellow grains, but also purple and yellow. The grains are small and round, the skin is thin and soft, tender, sweet and delicious.Contains carotene, zeaxanthin, with the effect of eye protection.
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