Plant ash is the ashes left by the burning of branches, leaves, wood, weeds and other plants. Among them, plant ash contains various ash elements in the plant body, including potassium 5%-10%, phosphorus 2%-3%, calcium and a small amount of magnesium. , Iron, sulfur, zinc, manganese, molybdenum and other nutrients. Black-gray plant ash contains more potassium, while gray-white plant ash contains less potassium.
main effect
Control aphids. Plant ash is alkaline and contains very fine particles. For example, contact with soft insects such as midge adult, wheat aphid, wheat spider, wheat sawfly, etc., can block the stomata, cause physiological disorders, and can kill some insects and inhibit their occurrence. Add 10 kg of plant ash and 50 kg of water, soak for a day and night, and spray the filtrate to prevent and control aphids on fruit trees, vegetables, flowers and other crops.
Prevent and control fruit tree diseases. For fruit trees with powdery mildew, excavate the root soil at a depth of 10-20 cm at a distance of 15 cm from the trunk, apply 10-20 kg of plant ash per plant, and then cover with a thin layer of soil. The cure rate can reach more than 80%. Prevent white leaf disease of seedlings. Every mu of seedling field uses 10 kg of plant ash, 10 kg of tea cake, 1 kg of sulfur powder, and 15 kg of lime to be evenly spread on the seedling field (early, middle and late rice), which can effectively prevent the occurrence of bacterial blight in the seedling field.
Disinfection. Scattering fresh plant ash in livestock and poultry barns for sterilization can improve the ability of livestock and poultry to resist pathogens and reduce or eliminate diseases.
Plant ash has the functions of moisture absorption, heat absorption, heat preservation and inhibition of biological activities. Wash and dry the crock, crock and other storage utensils, and then pad the bottom with plant ash, spread a layer of kraft paper on top, put the seeds on the kraft paper, and seal with plastic film after installation. The storage effect is good, which is beneficial to the seedlings, Whole seedlings, strong seedlings. Choose potatoes and sweet potatoes that have no wounds and cover them with plant ash. The storage period can be up to half a year.
Promote germination: After sowing flowers and trees, level the border surface and cover 1 to 2 cm with plant ash. When spreading in the windless morning and evening, it can effectively increase the soil temperature, keep the soil loose, and promote the seeds to germinate 7 to 10 days in advance , And the seedlings grow neatly and robustly.
Accelerate rooting: In the process of transplanting flowers and trees, use plant ash and organic fertilizer as a base fertilizer, or mix 5% to 20% of plant ash when preparing nutrient soil, which can increase the absorbability of fertilizers, promote wound healing, and improve seedling transplantation The survival rate of planting.
Prevent falling leaves: Spray 8% to 15% of the plant ash extract in the flower and tree growing season as an extra-root fertilizer, which can improve the photosynthetic efficiency of the leaves, extend the growth period of the leaves, promote the beauty of the flowers and leaves, and improve the ornamental effect.
Prevent wounds: Flowers and trees that are prone to wounds, such as grapes, figs, cycads, etc., can be used to control wounds, prevent wounds from infection and rot, and promote healing.
Instructions
1. Make base fertilizer
Tree ash can be used as a basic fertilizer for dryland crops. Generally, the amount of basic fertilizer is 200-300 kg/mu. Note that it cannot be mixed with acidic fertilizers, and it is suitable for deep application to avoid losing fertilizer efficiency due to rain.
2. Make top dressing
It can be used as top dressing in paddy fields. Generally, the method of sprinkling and top dressing is adopted. Note that the water cannot be discharged in the paddy field for 5-7 days. The dry topdressing of crops is suitable for deep application, and it can also be scattered on the leaf surface of the crops. The general use amount is 100-200 kg per mu.
3. Make foliar fertilizer
The leaching liquid of plant ash can be used to spray the leaves during the flowering and fruiting stages of the crop. Generally, after soaking in 50 kg of water for every 5 kg of plant ash for 12 hours, take out the filtered clear liquid, and add 50 kg of water for foliar spray. When spraying on the leaves, be sure to spray at a low concentration to avoid burns to the leaves if the concentration is too high.
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