不同草种在磷石膏基质中生长适应性  

Growth adaptation of various grass seeds on phosphogypsum medium

作　　者：向仰州[1] 刘方[2] 

机构地区：[1]中国林业科学研究院热带林业研究所,广东广州510520 [2]贵州大学资源与环境工程学院,贵州贵阳550003

出　　处：《辽宁工程技术大学学报（自然科学版）》2010年第3期525-528,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：973计划前期研究专项基金资助项目(2008CB417209)

摘　　要：为了解决磷石膏堆场植被恢复过程中草种的优选,在磷石膏基质中种植一年生黑麦草、多年生黑麦草、草地早熟禾、百喜草、紫花苜蓿和白三叶等6种草种,采用发芽势、发芽率、出苗时间、平均株高、绿期、分蘖率和成活率评定各草种对磷石膏基质的生长适应性。结果表明:一年生黑麦草和多年生黑麦草和紫花苜蓿的发芽能力、出苗时间、平均株高、绿期、分蘖率和成活率均优于草地早熟禾、紫花苜蓿、百喜草和白三叶,并达到显著性差异水平(P<0.05),说明一年生黑麦草和多年生黑麦草对磷石膏的适应性比紫花苜蓿、白三叶、早熟禾和百喜草强。该结果对磷石膏堆场植被恢复中草种的选用具有参考价值。Highly adaptive grass seeds were selected for rehabilitating vegetation ofphosphogypsum stock dumps. Annual ryegrass L., Lolium perenne L., Kentucky bluegrass L., Paspalum notatum L., Alfalfa L. and Trifolium pretense L. were planted respectively in phosphogypsum media. Their growth adaptabilities in the media were evaluated in terms of germination potential, percentage germination, germination time, mean plant height, green time, tiller rate and survival rate. The results indicate that the germination capabilities, germination time, mean plant height, green time, tiller rate and survival rate of Annual ryegrass and Lolium perenne are significantly greater than those of Kentucky bluegrass, Paspalum notatum, Alfalfa, and Trifolium pretense （P〈0.05）. It shows that Annual ryegrass and Lolium perenne have higher growth adaptabilities in phophogypsum media than Kentucky bluegrass, Paspalum notatum, Alfalfa and Trifolium pretense do. This study provides a justification in choosing grass seeds for restoring vegetation on phosphogypsum stock dumps.

关 键 词：磷石膏基质 草种 生长适应性 植被恢复 

分 类 号：X705[环境科学与工程—环境工程]