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  

Effect of Application of CaO on Soil pH and Heavy Metal Content in Phyllostachys violascens Stands

作　　者：刘军 冯秀智[2] 史磊 张燕萍 

机构地区：[1]浙江省杭州市余杭区林业工作站,浙江杭州311100 [2]浙江农林大学环境与资源学院,浙江临安311300 [3]浙江省杭州市余杭区余杭街道农业公共服务中心,浙江杭州311120 [4]浙江省杭州余杭区上湖明山竹笋专业合作社,浙江杭州311120

出　　处：《浙江林业科技》2017年第2期55-59,共5页Journal of Zhejiang Forestry Science and Technology

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)

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(P<0.05)。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(P<0.05),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%。Selection of degraded Phyllostachys violascens stands was implemented in April of 2016 in Yuhang, Zhejiang province for establishing 12 sample plots by randomized block design. Treatments of application of Ca O were carried out with 0（ck）, 1500, 4500 and 7500 kg/ha. p H and heavy metal content in the soil was determined in November. The result demonstrated that application of Ca O could increase p H and decrease exchangeable acid（P〈0.05）. Compared with the control, p H of soil treated by Ca O increased 0.21-0.60, exchangeable acid, H-＋ content and Al^3＋ content decreased by 10.3%-32.2%, 13.5%-32.2% and 9.8%-31.3%. Application of Ca O could evidently decreased Zn, Cu, Pb and Cd content by 13.4%-40.5%, 23.4%-49.0%, 26.2%-55.0% and 3.4%-46.8%.

关 键 词：土壤酸碱度 有效态重金属 生石灰 早竹 

分 类 号：S795.9[农业科学—林木遗传育种]