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本文通过对日本落叶松（ＬａｒｉｘＫａｅｍｐｆｅｒｉ Ｃａｒｒ）苗营养诊断研究，结果表明，苗木养分含量适宜的Ｎ／Ｐ＝１０．０８８±０．０７５４；Ｋ／Ｐ＝４．２８７３±０．４３５５；Ｋ／Ｎ＝０．４７２２±０．０３６０。其最佳施肥量为硫酸铵４９５ｋｇｈａ－１、过磷酸钙４５０ｋｇｈａ－１、硫酸钾８４ｋｇｈａ－１。
In this paper, the nutrition diagnosis of Larix kaempferi Carr seedlings in Japan was studied. The results showed that N / P = 10.088 ± 0.0754 and K / P = 4.2873 ± 0.4355 and K / N = 0.4722 ± 0.0360. The optimum amount of fertilizer is ammonium sulfate 495kgha-1, superphosphate 450kgha-1, potassium sulfate 84kgha-1.