桉树林下套种对牧草糙毛假地豆的生长和林地土壤养分的影响  

Interplanting Desmodium heterocarpon var. strigosum Meeuwen under Eucalyptus plantations

作　　者：林正眉[1] 侯琼昭 罗刚跃[1] 董川宏[1] 麦荣臻 陈树耿 LIN Zheng-mei;HOU Qiong-zhao;LUO Gang-yue;DONG Chuan-hong;MAI Rong-zhen;CHEN Shu-geng(Guangdong Provincial Key Laboratory of Biotechnology for Plant Development / School of Life Sciences,South China Normal University,Guangzhou 510631,China;South China Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650,China;Sibao Forest Farm in Jiangmen,Heshan 529700,China)

机构地区：[1]广东省植物发育生物工程重点实验室/华南师范大学生命科学学院,广东广州510631 [2]中国科学院华南植物园,广东广州510650 [3]江门市四堡林场,广东鹤山529700

出　　处：《广东农业科学》2017年第12期45-52,共8页Guangdong Agricultural Sciences

基　　金：广东省林业科技创新项目(2014KJCX019-05);广东省精品资源共享课建设项目(2013-113-2-32)

摘　　要：为探讨桉树——糙毛假地豆套种模式的可行性,选取广东江门四堡林场不同林龄桉树林,套种糙毛假地豆(Desmodium heterocarpon var.strigosum Meeuwen),检测其株高、冠幅等动态变化;分析不同种植方式对其生长及土壤养分的影响。结果表明:对照苗圃地种植的糙毛假地豆冠幅显著大于桉树林下的植株,说明荫蔽环境对糙毛假地豆生长有一定抑制作用。不同林龄桉树林下的糙毛假地豆全年都可生长,且其株高、分支、冠幅均无显著差异;种子播种和实生苗种植两种套种方式对糙毛假地豆的株高、冠幅无显著影响;糙毛假地豆在适当的种植间距下可有效抑制杂草;桉树林下套种糙毛假地豆可有效改善土壤养分含量。结合其生长特性进行管理,桉树林下套种的糙毛假地豆生长趋势正常,且能改善土壤条件。In order to provide scientific basis for the selection of herbage suitable for under Eucalyptus plantation,variation of growth index(height,branch and crown width)of Desmodium heterocarpon var.strigosum Meeuwen as well as soil nutrition content were investigated and analyzed before and after interplanting.The Eucalyptus forest under different stand ages of Sibao Forest Farm of Heshan city,Guangdong province was selected as the research base for interplanting of forest and grass.The result showed that the shade environment could restrain the growth of D.heterocarpon var.strigosum to some extent.In Eucalyptus forest of different ages,the herbage could grow all the year round,and there was no significant difference in their growth.Herbages grew well by the way of seed sowing method.Herbage planting could effectively restrain the growth of weeds by reducing planting spacing appropriately.The interplanting of herbage was good for the enhancement of the content of soil nutrients.Conclusion can be preliminarily drawn,it should be managed combining its growth characteristics,the interplanting under Eucalyptus can grow trend of the herbage is normal and improve the soil nutritional condition.

关 键 词：桉树林下 林草套种 糙毛假地豆 生长情况 土壤养分 

分 类 号：S344.2[农业科学—作物栽培与耕作技术]