石灰石粉对重庆酸雨区马尾松健康状况的改善效果  

Effect of Limestone Powder Application on Health Conditions of Pinus massoniana Plantation in the Acid Rain Region of Chongqing

作　　者：李志勇[1,2] 郭永新[1] 王彦辉[2] 潘伟[3] 杜士才 何萍 段健 

机构地区：[1]河南科技大学农学院,河南洛阳471003 [2]中国林业科学研究院森林生态环境与保护研究所,国家林业局森林生态环境重点实验室,北京100091 [3]西南大学资源环境学院,重庆400715 [4]重庆市林业局,重庆401147 [5]重庆市铁山坪林场,重庆400026

出　　处：《华南农业大学学报》2008年第2期86-89,共4页Journal of South China Agricultural University

基　　金：国家林业局天然林保护工程科技支撑项目(TBKJ2003-04);“十一五”科技部科技支撑计划项目(2006BAD03A1803);中挪合作项目“Integrated Monitoring Program on Acidification of Chinese Terrestrial Systems”;科技部社会公益研究专项项目(2004DIB3J102);国家林业局森林生态环境重点实验室资助项目

摘　　要：以酸沉降影响下重庆市铁山坪的马尾松Pinus massoniana纯林为研究对象,采用随机区组设计,设立在酸化土壤表面一次性撒施石灰石粉0(对照)、1、2、3和4 t.hm-25个处理的长期定位观测试验,比较不同剂量石灰石粉对马尾松健康状况的改善效果.结果表明:撒施石灰石粉可以降低马尾松叶量损失率,促进胸径、树高、主轴顶梢长度和细根生长.在施后1年左右时间内,效果以2 t.hm-2最佳.在以后近2年时间内,效果以4 t.hm-2最佳,与对照相比,胸径和树高生长量分别增加32.80%和77.20%,差异均达显著水平(P<0.05).随着撒施石灰石粉后时间的推移,马尾松健康状况的改善效果随施用量增大而增加.The effects of limestone powder application on health condition of a Pinus massoniana plantation growing on acidified soil were studied by a long-term field permanent experiment, which began in 2004 at Tieshanping Forest Farm of Chongqing City. The experiment included five treatments in a randomized complete block design with three replicates. The five treatments consisted of four different doses each （one-time scattering 1, 2, 3 and 4 t · hm^-2 of finely ground limestone per hectare on the soil surface respectively） and a control. The results showed that all the limestone treatments ameliorated the health condition of the trees of Pinus massoniana. During the first year after scattering, the optimal dose was 2 t · hm^-2. During the latter two years （ from 2006 to 2007 ）, the healthiest trees were those growing on the soil amended with the highest limestone dose. Compared with the control, diameter at breast height （DBH） and height of the trees increased by 32.80% and 77.20%, respectively （P 〈0.05）.

关 键 词：重庆 酸沉降 马尾松 石灰石粉 健康 

分 类 号：S718.51[农业科学—林学] X517[环境科学与工程—环境工程]