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Nutrient soil materials The nutrient soil can be prepared according to local conditions and prepared locally. The basic materials are vegetable garden soil, decomposed organic fertilizer and ash manure.
The vegetable garden soil is the main component of the culture soil, and should generally account for 30-50%. However, garden soil can infect diseases, such as rickets, blight, early blight of Solanaceae, cotton blight, blight of melons, anthracnose and so on. Therefore, when using garden soil, it is generally not necessary to use the soil of the same vegetable field, and it is better to plant the soil of beans, onion and garlic vegetables. When using other garden soils, be sure to remove the topsoil and dig out the soil. The garden soil is best to be excavated at high temperature in August. After fully roasting, the garden soil should be broken and sieved. The sieved garden soil should be stored indoors or covered with film, and kept in a dry state for use. The pollution-free seedling requirements cannot be modulated with vegetable garden soil, but with large field soil.
Organic fertilizers can be used according to different conditions in different places, such as pig manure, garbage, river mud, manure, grass ash, human waste, etc., which should account for 20-30% of the cultivated soil. All organic fertilizers must be fully decomposed before they are available.
Carbonized chaff or ash can account for 20-30% of the culture soil. The carbonization of the chaff should be moderate, and the chaff should be completely burnt through, but the original shape should be maintained.
Human and animal excrement is generally poured into the garden soil to allow the soil to absorb. It is also possible to pour the human and animal excrement into the garden soil, garbage, column dung, etc., and stack the fermentation together.
In the nutrient soil, calcium superphosphate, which accounts for 2-3% of the total weight of the nutrient soil, is added to increase the content of calcium and phosphorus.
Nutritional soil formula The current ratio of nutrient soil commonly used in production is:
Sowing bed vegetable garden soil: organic fertilizer: ash ash = 5:1-2:4-3; vegetable garden soil: river pond mud: organic fertilizer: ash ash = 4:2:3:1; vegetable garden soil: cinder: organic Fertilizer = 1:1:1.
Transfer seedbed (nutritional meal) vegetable garden soil: organic fertilizer: tourmaline ash = 5:2-3:3-2; vegetable garden soil: garbage: ash ash = 6:3:1 (plus imported compound fertilizer, superphosphate 0.5%); vegetable garden soil: pig cow dung: ash ash = 4:5:1; vegetable garden soil: cattle horse manure: rice husk = 1:1:1 (cucumber, pepper).
Maturized charcoal: Vegetable garden soil = 1:1 (cabbage); decomposed organic compost: vegetable garden soil = 4:1 (cabbage, solanaceous); vegetable garden soil: sand: decomposed bark compost = 5:3:2.
When preparing fruit and vegetable seedlings, it is best to add 0.5% superphosphate leaching solution.
The selection of the above raw materials should be based on local materials, with low cost and good effect.
Preparation method All materials are thoroughly stirred and prepared during the preparation, and the nutrient soil is disinfected with the medicament. 15 days before sowing, open the nutrient mound, adjust the soil pH to 6.5-7.0 after sieving, if the acid is too much, adjust with lime; if it is too alkaline, neutralize with dilute hydrochloric acid. If the soil is too loose, it can increase cow dung or clay; when the soil is too sticky or the organic matter content is extremely low (less than 1.5%), it should be mixed with organic compost, sawdust, etc., and then placed in a seedbed or in a nutrient bowl.
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How to prepare nutrient soil for greenhouse vegetable nursery
The general requirements for nutrient soil generally require 15-20% organic matter content, 0.5-1% total nitrogen content, quick-acting nitrogen content greater than 60-100 mg/kg, fast-acting phosphorus content greater than 100-150 mg/kg, and available potassium content greater than 100. Mg/kg, ph value 6-6.5. Loose and fertile, with strong water retention, water permeability, good ventilation, no pathogens and weed seeds.
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