Answer: Combine fertilization with deep-dipping plate and spread fertilize. After 2 to 4 years of age, give a tree of results. After spreading fertilizer under the canopy, plunge into a depth of about 20 cm. The trees above 5 years old can be fertilized in a straight line, with a groove width of 50 cm and a depth of 40 cm. The fertilizer and soil can be mixed and filled back into the ditch. It is also possible to open the ditch and turn the tree after the application. The disadvantage of over-digging fertilization is too concentrated. Trace element fertilizer in the amount of less, should be mixed with fine soil or fine sand before the application. Http://Content/2ea4781d-a501-4c95-818c-933b228504de?cType=2
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