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1. Because trees absorb nutrients and water all depends on the roots, therefore, fertilize should be around the roots, not near the trunk.
2, large and deep trees, fertilization should be deep, the scope should be large, such as pine, ginkgo, skunk, acacia, etc.; shallow root trees, fertilization should be shallow, the range should be small, such as the law, amorpha And flowering shrubs, etc.
3, organic fertilizer should be fully fermented, decomposed, avoid using raw manure, and the concentration should be thin, not suitable for block application.
4. After fertilization, timely irrigation should be carried out in an appropriate amount to allow the fertilizer to penetrate into the soil.
5. Fertilize when the weather is fine and the soil is dry. In the rainy days, because the roots absorb water slowly, not only the nutrients are not easily absorbed, but also washed away by the rain, causing waste.
6, sand, slopes, etc. are easy to cause nutrient loss, so fertilization should be deeper.
7. Nitrogen fertilizer has strong permeability in soil, so it can be applied shallowly, so that it gradually penetrates into the distribution layer of roots of trees and is absorbed by trees; the permeability of potassium fertilizer is poor, and the permeability of phosphate fertilizer is worse. It should be applied deep to roots. More distributed.
8, the base fertilizer to play fertilizer slower, should be deep application; topdressing fertilizer effect is faster, should be shallow application, for timely absorption of trees.
9. Foliar fertilizer enters the leaves through the stomata of the leaves and is then transported to various organs. Generally, the young leaves absorb faster than the old leaves, and the back of the leaves absorbs faster than the front of the leaves. Therefore, spray fertilizer must be sprayed evenly to make it easier to absorb.
10, foliar fertilizer should strictly control the concentration, so as not to burn out the leaves, it is best to spray on the cloudy or sunny day before 10 o'clock in the morning and after 4 o'clock in the afternoon, so as not to affect the fertilizer effect or cause phytotoxicity.
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