Make quick-impact farmyard fertilizers. Grass ash can be used as base fertilizer, especially suitable for cover fertilizer. Base fertilizer, the general amount of 75-100 kg / mu. Sweet potatoes and potatoes are used as base fertilizers in plant and wood ash, which can increase production by about 15%. Tobacco use grass and wood ash as base fertilizer can improve the quality and yield of tobacco leaves. For top dressing, it can increase production by 10%-15% in sweet potato and potato during the expansion period. As a cover fertilizer, in the vegetables, tobacco, cotton, sweet potato seedlings and rice seedlings, the appropriate amount of fresh grass ash spread on the seedbed, can increase the temperature, reduce the temperature caused by the rotten seedlings, promote early emergence, strong seedlings. Do high quality soil pesticides. After sifting fresh plant ash, in the morning when there is dew on the locusts and spider mites on the crops, 2-3 consecutive times, each time interval 3-5 days, locusts, spider mites control effect can reach 95% or more . When planting onions, garlic, and leeks, apply 50 kg of ash per acre, and then cover the soil. The root control effect can reach more than 90%. Before sowing, we can use 50-70 kilograms of plant ash in combination with soil preparation to control underground pests. Before sowing of potato, the timely treatment of wounds with plant ash after the cutting of the potato shoots can not only play the role of bactericidal and disease prevention, but also has a good preventive effect on earthworms. After the tobacco leaves and Chaotian pepper are transplanted, when the dew is not dry in the morning, the plant ash is withdrawn and sprayed once every 10-15 days, which can effectively prevent mosaic disease of tobacco leaves and peppers. The application of wheat field can inhibit the occurrence of rust and powdery mildew; rice field application has a better control effect on rice blast and bacterial blight. Application notes. Plant ash contains calcium oxide and potassium carbonate and should not be applied in saline or alkaline land. Apply as much as possible to hi potassium crops, such as: rape, sesame, peanuts, potatoes, sweet potatoes, tobacco, tea, vegetables, etc. Plant ash can not be mixed with ammonium nitrogen fertilizer (ammonium bicarbonate, ammonium sulfate, ammonium chloride, etc.) and organic fertilizers such as human waste and circulatory fertilizers to avoid loss of nitrogen. In addition, foliar application should use fresh dry sifted ash, and apply it before the dew is dry. Foliar spraying should use fresh and clear ash to improve the efficiency of the fertilizer.
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