Root fertilization refers to fertilizing the fertilizer and spraying it on the leaves of tea leaves to absorb nutrients through the penetration of leaf epidermal cells. Its advantages are: it is not affected by factors such as soil erosion, infiltration and fixation, and fertilizer utilization is economical. It can not only control the combination of pests and diseases, but also can correct the deficiency of trace elements in tea plants. Root fertilization available 0.3 ~ 0.5% of the urea or a variety of special foliar fertilizer, micro-fertilizer at the early stage of new shoots, early or late on cloudy days or sunny spraying, spraying many times a year.
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