不同改良措施下羊草群落生物量的研究  

Study on Biomass of Leymus chinensis Community after Different Improving Measures

作　　者：杨丽娜[1,2] 宝音陶格涛[1] 

机构地区：[1]内蒙古大学生命科学学院,内蒙古呼和浩特010021 [2]锡林郭勒盟太仆寺旗农牧业局,内蒙古027000

出　　处：《中国草地学报》2010年第1期86-91,共6页Chinese Journal of Grassland

基　　金：现代农业产业技术体系建设(牧草)专项资金;国家自然科学基金(30460086)

摘　　要：对1983年通过不同改良措施(播种羊草、浅耕翻、围栏封育)处理过的退化羊草草原群落生长季节动态进行比较研究,旨在寻求退化草地恢复的最佳途径。23年的恢复结果表明:地上生物量的季节动态呈单峰曲线,曲线形状基本一致;三种措施增产效果都很明显,自然恢复、浅耕翻、播种羊草群落地上生物量分别比围栏外提高了102.69%,130.5%,107.1%,不同改良措施之间生物量并无显著差别;干物质含量的季节变化很明显,生长初期和生长末期的干物质含量较高,土壤含水量与干物质含量呈负相关关系,只有围栏外达到显著水平。The seasonal dynamics of community after different improving measures（seeding Leymus chinensis,shallow ploughing,fencing） on degenerated Steppe of Leymus chinensi were studied in 1983 to find out an approach to restore degraded grassland.The results indicated that the seasonal dynamics of aboveground biomass was a curve with single apex,and the forms of the curve were similar under different treatments;all three measures showed remarkable effects on increasing yield,and the community biomass after fencing,shallow ploughing,seeding Leymus chinensis was increased by 102.69%,130.5%,107.1% compared with the control respectively;the dry matter content obviously changed with seasons and was higher at the initial and later stages;there were negative correlation between dry matter content and soil moisture content.

关 键 词：退化羊草草原 改良措施 地上生物量 季节动态 

分 类 号：S812.8[农业科学—草业科学]