日本多产绿茶。茶叶的质量与新梢中的含氮化合物,咖啡碱、茶氨酸及葚他氨基酸的含量密切相关。所以人们非常注意茶树栽培中氮肥的使用。施用的氮肥比一般的指标耍高,有时竟高达200公斤氮/10英亩,用来增加采摘茶树叶片中的氮化物含量。然而,过多地施用氮肥是事与愿违的,它将引起能源浪费和环境恶化,也有害于茶树生长。本试验的目的就是利用~(15)N 示踪法弄清施入茶园的氯肥的吸收与利用过程,从而获得 Japan prolific green tea. The quality of tea leaves is closely related to the content of nitrogenous compounds, caffeine, theanine and acenaphthene amino acids in shoots. So people pay great attention to the use of nitrogen fertilizer in tea cultivation. Nitrogen fertilizers were applied at higher rates than usual and sometimes up to 200 kilograms of nitrogen per 10 acres to increase the amount of nitrogen in the leaves of tea trees. However, excessive application of nitrogenous fertilizer is counterproductive. It can cause energy waste and environmental degradation, and also detrimental to tea tree growth. The purpose of this experiment is to find out the process of absorption and utilization of chlorine fertilizer applied to tea plantations by ~ (15) N tracing method