盐池县不同建植类型甘草地下生物量分布规律及其草地经济效益  

Underground biomass of the different planting Glycyrrhiza uralensis and their economic efficiency

作　　者：刘孝勇[1,2] 宋乃平[2] 何秀珍[1,2] 

机构地区：[1]宁夏大学西北退化生态系统恢复与重建省部共建教育部重点实验室,宁夏银川750021 [2]宁夏大学资源环境学院,宁夏银川750021

出　　处：《宁夏工程技术》2010年第4期345-348,共4页Ningxia Engineering Technology

基　　金：国家自然科学基金资助项目(30660039);宁夏农业综合开发办公室委托项目

摘　　要：为了探讨干旱半干旱地区不同建植类型甘草(Glycyrrhiza uralensis)根系的分布规律,比较其经济效益的高低,对马儿庄3种建植类型甘草进行了调查研究.经分析得知,3种甘草地下生物量80%分布于80 cm以上土层范围内,随深度的增加呈波状下降,人工甘草地下生物量比野生甘草随土层深度的增加减少得更快,3种甘草地下生物量分布最大的土层与分布最小的土层均不同;年均经济收益由高到低依次是单播甘草、混播甘草、野生甘草.In order to explore root distribution pattern of different planting Glycyrrhiza uralensis in arid and semi-arid regions,and compare their level of economic efficiency,three planting types of Glycyrrhiza uralensis are investigated in Maerzhuang.The result is that,80% of the below-ground biomass of three kinds of Glycyrrhiza uralensis locates above 80 cm deep soil and the decline in below-ground biomass is wavy as the soil depth increases,the decline in below-ground biomass of cultivated Glycyrrhiza uralensis is faster than that of wild liquorices;annual economic benefits rank as unicasting Glycyrrhiza uralensis,mixed planting Glycyrrhiza uralensis and wild Glycyrrhiza uralensis.

关 键 词：甘草 盐池县 生物量 经济效益 

分 类 号：S567.71[农业科学—中草药栽培]