浙西南油茶林下猪屎豆生物量和元素含量分析  

Study on Biomass and Elemental Content of Cro talaria pallida under Camellia oleifera Forest in Southwest Zhejiang Province

作　　者：吴国华 夏春平 钟张胜 周众灵 林大余 兰智鑫 葛永金 WU Guohua;XIA Chunping;ZHONG Zhangsheng;ZHOU Zhongling;LIN Dayu;LAN Zhixin;GE Yongjin(Longquan forestry technology station,Lishui 323700,Zhejiang,China;Longquan forest farm,lishui 323700,Zhejiang,China;Zhejiang A&F university,Hangzhou 311300,Zhejiang,China;Scientific research management center of East China Medicinal Botanical Garden,Lishui 323000,Zhejiang,China)

机构地区：[1]龙泉市林业技术总站,浙江丽水323700 [2]龙泉市林场,浙江丽水323700 [3]浙江农林大学,浙江杭州311300 [4]华东药用植物园科研管理中心,浙江丽水323000

出　　处：《福建林业科技》2021年第4期13-16,共4页Journal of Fujian Forestry Science and Technology

基　　金：浙江省基础公益类研究计划(新造油茶林地授粉昆虫定居点营建关键技术研究,LGN20C160001)。

摘　　要：猪屎豆(Crotalaria pallida)是一种高效固氮、富集营养元素的豆科蜜源与绿肥植物。于2020年,在浙江省西南部丽水市龙泉市兰巨乡的油茶林株行间点播1年生猪屎豆,以油茶林间作下的猪屎豆为研究对象,采用全挖法对猪屎豆的生物量分配特征以及元素含量分配规律进行分析。结果表明:猪屎豆地下生物量小于地上生物量,仅占总生物量的9%;营养元素在猪屎豆不同器官中的分配有所差异,Ca、Mg、Zn、Mn、N、P、K均为叶>茎>根,Cu和Fe为茎>根>叶;各元素在组织的分配从多到少依次为根:N>K>P>Fe>Ca>Mg>Mn>Zn>Cu,茎:N>K>P>Ca>Mg>Mn>Fe>Zn>Cu,叶:N>K>Ca>Mg>P>Mn>Fe>Zn>Cu。表明油茶林间作猪屎豆作为绿肥植物,应将其地上部分翻压入土以发挥绿肥植物改良土壤的作用。As a Leguminosae plant with efficient nitrogen fixation and enrichment of nutrient elements,Crotalaria pallida have an important influence on ecological improvement and green manure cultivation.In 2020,two plot with equal area of Crotalaria pallida under the canpony of Camellia oleifera was selected for sampling and collected by full cut method in Lanju Township,Longquan City,Lishui City,Southwest Zhejiang Province.Biomass allocation characteristics and the distribution of element content were analyzed.The results indicated that belowground biomass is less than aboveground biomass,the belowground biomass is only 9%.Average contents of nutrient elements in various organs of Crotalaria pallida were varied,Ca,Mg,Zn,Mn,N,P and K in leaves>stems>roots;Cu and Fe in stems>roots>leaves.The distribution of elements in tissue was as follows:N>K>P>Fe>Ca>Mg>Mn>Zn>Cu in root;N>K>P>Ca>Mg>Mn>Fe>Zn>Cu in stem;N>K>Ca>Mg>P>Mn>Fe>Zn>Cu in leaves.To sum up,study on the characteristic of biomass allocation,biomass model and element content analysis of Crotalaria pallida under Camellia oleifera forest can provide reference for its green fertilizer function in intercropping with Camellia oleifera forest.

关 键 词：油茶 猪屎豆 生物量 元素含量 

分 类 号：S794.4[农业科学—林木遗传育种] S753.53[农业科学—林学]