生石灰用量对早竹林土壤酸碱度及有效态重金属含量的影响

发布时间：2018-02-27 17:36

本文关键词： 土壤酸碱度有效态重金属生石灰早竹　出处：《浙江林业科技》2017年02期 　论文类型：期刊论文

【摘要】：2016年4月,在浙江省余杭区选择3块相邻的退化早竹Phyllostachys violascens林地,采用随机区组设计,建立12个10 m×10 m的小区,设置0(CK),1 500,4 500,7 500 kg·hm~(-2)生石灰用量处理。施用后7个月,测定不同生石灰用量对林地土壤酸碱度及有效态重金属含量的影响。结果表明,生石灰的施入显著提高了土壤p H、降低了土壤交换性酸含量(P0.05)。与对照相比,土壤p H分别提高了0.21~0.60个单位,土壤交换性酸总量、H+含量和Al~(3+)含量,分别下降了10.3%~32.2%,13.5%~32.2%,9.8%~31.3%。生石灰的施用显著降低了土壤有效态重金属的含量(P0.05),有效态重金属Zn,Cu,Pb,Cd的含量分别降低了13.4%~40.5%,23.4%~49.0%,26.2%~55.0%,3.4%~46.8%。
[Abstract]:In April 2016, three adjacent degraded Phyllostachys violascens woodlands were selected in Yuhang District, Zhejiang Province. Twelve plots with 10 m 脳 10 m were set up by random block design. The effects of different dosage of quicklime on soil pH and available heavy metal content were determined. The results showed that the application of quicklime significantly increased soil pH and decreased soil exchangeable acid content (P0.05N). Soil pH increased 0.21 ~ 0.60 units, soil exchangeable acid total H content and Al~(3) content decreased by 10.3 ~ 32.22 ~ 13.5g ~ (32. 2) and 9.8 ~ 31.3 respectively. The application of quicklime significantly reduced the content of soil available heavy metals (P0.05N), and the content of available heavy metal ZnCuCuPbnb ~ (2 +) decreased by 13.4N ~ (40.5) ~ (23.49.49.0) ~ (26.2c) ~ (3.45.0) ~ 3.46.80.The content of Zn ~ (CuCu) Pb ~ (2 +) in the soil was decreased significantly by the application of quicklime, and the content of Zn ~ (CuCu) Pb ~ (2 +) CD in the soil decreased respectively.
【作者单位】：浙江省杭州市余杭区林业工作站;浙江农林大学环境与资源学院;浙江省杭州市余杭区余杭街道农业公共服务中心;浙江省杭州余杭区上湖明山竹笋专业合作社;
【基金】：杭州市农业科研攻关专项项目“早竹林冰雪灾害应对与生产恢复关键技术研究与示范”(2016)
【分类号】：S714;S795

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