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近年来,水杉已成为江苏沿海地区的造林树种。本地区的土壤含有不同程度的盐份(主要是氯盐)和偏高的pH值。为了解水杉植苗造林成活率与土壤盐分和pH的关系,于1986年在本站内土壤含盐率0.02％—0.48％、pH值8.42—9.39的小块地段上(分为面积为1×1.5米的7个小区,每小区栽6株),用2年生水杉苗造林,测定每小区土壤含盐量(x_1)、pH值(x_2)和统计造林成活率(P),取y=sin~(-1)P~(1/2),求出以下线性回归方程: y=579.5906-239.9072x_1-57.9560x_2 结果表明土壤含盐率高低对水杉植苗造林成活率的影响,要比土壤pH值对水杉植苗造林成活率的影响大,且不同土壤含盐率和
In recent years, Metasequoia has become afforestation tree species in Jiangsu coastal areas. The soil in the area contains varying degrees of salt (mainly chloride) and high pH. In order to understand the relationship between afforestation survival rate of Metasequoia glyptostroboides and soil salinity and pH, in 1986 the site of soil salinity 0.02% -0.48%, pH 8.42-9.39 small plots (divided into an area of 1 × 1.5 M 2, and 6 plants per plot), the soil salinity (x_1), pH value (x_2) and statistical afforestation survival rate (P) (-1) P ~ (1/2), the following linear regression equation was obtained: y = 579.5906-239.9072x_1-57.9560x_2 The results showed that the effect of soil salinity on afforestation survival rate of Metasequoia glyptostroboides was higher than that of soil pH Metasequoia transplanted seedlings afforestation survival rate of large, and different soil salt content and