A: In combination with deep-expanding and expanding fertilization, the result tree is 2 to 4 years old. After spreading under the canopy, it can be turned into a soil with a depth of about 20 cm. Large trees of 5 years old or older can be shunned and fertilized. The width of the ditch is 50 cm and the depth is 40 cm. The fertilizer and soil are mixed and filled back into the ditch, and the ditch and the tree can be alternated after the application. The disadvantage of being too concentrated in trenching and fertilization. Because the amount of medium and trace element fertilizer is small, it should be mixed with fine soil or fine sand before application.
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Black beans are rich in protein, fat, carbohydrates, carotene, vitamins B1, B2, crude fiber, calcium, phosphorus, iron and other nutrients, and contain a small amount of daidzein glycoside genistein. Can cure disease, medicine and food are salty. Traditional Chinese medicine believes that black beans are a cheap and anti-aging food, with special functions of medicine and food.
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