The spring is dry and drizzled, the soil temperature is low, the fertilizer applied to the soil is basically insoluble, and the effectiveness is poor. In addition, the absorption activity of the root system is weak during this period, so at most 10% of the spring fertilizer can be absorbed, even 10%. Can not absorb. If you only fertilize it at the time, throw in a fat and you plan to reopen it in a month or so. It's still like it was. There is almost no change. However, during this period, long leaves and long shoots need a lot of nutrients, so we must pay attention to the autumn fertilization in order to improve the tree's storage and nutrition.
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