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山核桃是果、油两用树,主产天目山区的浙江省临安县。目前,多野生和半野生状态,产量低而不稳。该县建国以来山核产量变量系数(C·r)达60%以上。人工施肥能达到增产的目的。据4年来试验(1986～1989年),施肥区产量有明显提高。其中,施尿素区组年亩均产52kg,为对照区的132.7%;施复合肥区组年亩均产53.9kg,为对照区的137.5%。
Hickory is a fruit, oil dual-use tree, the main producing mountain in Zhejiang Province Lin’an County. Currently, there are many wild and semi-wild states with low and unstable yields. Since the founding of the county, the coefficient of nuclear yield (C · r) has reached more than 60%. Artificial fertilization can achieve the purpose of increasing production. According to the test in 4 years (1986 ~ 1989), the output of fertilization area has obviously increased. Among them, the application of urea in the group of mu yield 52kg, 132.7% of the control area; Shihefei Hefei area average annual output of 53.9kg, 137.5% of the control area.