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茶树是叶用作物,其品质就绿茶而言与全氮、氨基酸含量呈正相关。所以,在茶叶生产中氮素的施用是非常重要的。茶树的生育期,地上部分在3月下旬到11月上旬,地下部分大约在2月下旬到11月下旬。目前对茶树氮肥的施用,采取每年四次。即秋肥、春肥、夏肥Ⅰ(二茶前)、夏肥Ⅱ(三茶前)。各自施用的分配比率是30％,30％,20％,20％。这是根据年内茶树对养分的吸收,计算出在不同季节对养分的吸收量来制定的。但是,关于这种施肥方法及各次的施肥效果都没有进行过研究。仍然不明确。
Tea tree is a leaf crop, the quality of green tea in terms of total nitrogen, amino acid content was positively correlated. Therefore, the application of nitrogen in tea production is very important. Tea tree growth period, aerial parts from late March to early November, the underground part of about late February to late November. The current application of tea nitrogen fertilizer, taken four times a year. The autumn fertilizer, spring fertilizer, summer fertilizer Ⅰ (two tea), summer fertilizer Ⅱ (three tea before). The distribution rates for the respective applications are 30%, 30%, 20%, 20%. This is based on tea tree nutrient absorption during the year to calculate the absorption of nutrients in different seasons to develop. However, no research has been conducted on this method of fertilization and the effects of various fertilizations. Still not clear.