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由于日本茶园长期实施多肥栽培，已给环保等方面带来诸多危害，因此，减少氮肥用量并保持茶叶高产优质是日本迫切需要研究解决的重要课题。最近，读单县农业综合研究中心报道了他们在这方面的试验研究结果。该项试验包括两部分：（1）通过电导率传感器调查包括缓效肥在内的各种
Since long-term cultivation of Japanese tea plantations has brought many hazards to environmental protection, reducing the amount of nitrogen fertilizer and maintaining the high yield and quality of tea is an important issue that Japan urgently needs to study and solve. Recently, the single county agricultural comprehensive research center reported their experimental results in this area. The test includes two parts: (1) through the conductivity sensor to investigate, including slow-release fertilizer, including a variety of