氮磷添加及林分密度对大叶相思林土壤化学性质的影响
冯慧芳1,2,刘落鱼1,薛立1,*(
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Effects of nitrogen and phosphorus additions and stand density on soil chemical property in Acacia auriculiformis stands
FENG Hui-Fang1,2,LIU Luo-Yu1,XUE Li1,*()
)
图1. 不同处理和密度的大叶相思林土壤pH (平均值±标准误差)。CK, 对照; N, 添加N; P, 添加P; N+P, 添加N和P。不同小写字母表示氮、磷添加间有显著差异(p < 0.05)。
Fig. 1. Soil pH value of the Acacia auriculiformis stands under different treatments and densities (mean ± SE). CK, control; N, N addition; P, P addition; N+P, N and P addition. Different lowercase letters indicate significant differences at 0.05 levels between nitrogen and phosphorus additions (p < 0.05).
