2016年6月，以水稻田和红豆杉幼林地为对照，在浙江省临安市选取2、6、8、11、16、20 a集约经营雷竹林（Phyllostachys praecox cv. prevernalis）提取0~10 cm、>10~20 cm和>20~40 cm层土样，测定各层钠、钙、镁、钾4种水溶性盐基离子浓度。结果表明，随着竹林覆盖经营时间的延长，土壤水溶性钾随着土层深度的增加而下降，水溶性钠和钙随土壤深度的增加而上升，水溶性镁在各土层的分布变化不大；对比水稻田土壤和红豆杉幼林地土壤，雷竹林表层土壤（0~10 cm）中水溶性钾、钙、钠和镁含量随着集约栽培时间增加，土壤水溶性盐基组分含量呈单峰型变化，其含量与雷竹的集约栽培措施密切相关。%Soil sampling was conducted at 0-10cm, >10-20cm, >20-40cm layer in 2-, 6-, 8-, 11-, 16-, 20-year mulching Phyllostachys praecoxcv. prevernalis stand in Lin’an, Zhejiang province in June 2010, taking paddy field and young Taxus chinensis var.maireistand as the control. Determinations on water soluble Na+, Ca2+, Mg2+ and K+ content at different layers and different aged stand demonstrated that water soluble K+ content decreased with the depth of soil layer, Na+ and Ca2+ content was the opposite, and Mg2+ content had no evident change among different layers along with years of mulching. Compared with the control, water soluble K+, Ca2+, Na+ and Mg2+ content at 0-10 cm layer of different aged stands had unimodal distribution, indicating that soil water soluble base content had close relation intensity of management.
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