Ginkgo trees are beautiful in shape, with light green leaves in spring and summer and yellow leaves in autumn, which can be used as garden trees and street trees. March-April in spring is the long leaf period of Ginkgo biloba, which is suitable for fertilization to promote leaf growth. Fertilization is generally carried out around February, with quick-acting mixed organic fertilizer as the main fertilizer, NPK compound fertilizer of 2~5kg per plant and mixed organic fertilizer of decomposed human excrement and urine of 5~ 10kg, which is generally controlled according to the size of trees.
Summer is the fruit-bearing period of Ginkgo biloba, so it is suitable for fertilization to promote fruit growth. Generally, fertilization is applied in early July every year, and 0.5kg urea is applied to all ginkgo plants. In case of persistent drought after fertilization, water should be replenished appropriately. Autumn is the defoliation period of ginkgo biloba, so it is appropriate to fertilize and raise trees. September ~ 10 is the time for ginkgo seeds to mature and harvest, and then ginkgo leaves begin to fall.
After harvesting, the root system of Ginkgo biloba reached the second growth peak, so fertilization was carried out after harvesting to make up for the nutrients consumed by Ginkgo biloba trees due to fruiting and ensure high yield in the next year. Generally, farmyard manure is used as the fertilizer for raising the body, and the optimum fertilization amount is 1kg fruit yield and 3kg farmyard manure.
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Matters needing attention
The fleshy seed coat of seeds contains ginkgolic acid, ginkgol and ginkgol, which is toxic. Ginkgo biloba contains small toxic substances: hydrocyanic acid, ginkgolic acid, hydrogenated ginkgolic acid, ginkgolic acid, ginkgolic acid and ginkgolic acid. Therefore, attention should be paid to the way ginkgo is eaten.
If cooked and eaten, ginkgolic acid and ginkgolic acid can be decomposed, and hydrocyanic acid can be removed because of its low boiling point, so cooked ginkgo biloba is less toxic. In order to prevent ginkgo poisoning, eating less cooked food is the fundamental method. The medical community believes that raw ginkgo should be controlled at about 10 capsules per day. Excessive consumption can cause abdominal pain, fever, vomiting, convulsions and other symptoms.
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