伞花木1年生播种苗生长节律研究  

Annual growth rhythm of Eurycorymbus cavaleriei one-year-old seedlings

作　　者：廖海红 代丽华 孔小丽 梁跃武 吴勇 林智红 梁跃龙 Liao Haihong;Dai Lihua;Kong Xiaoli;Liang Yuewu;Wu Yong;Lin Zhihong;Liang Yuelong(Jiangxi Jiulianshan National Nature Reserve Administration,Longnan Jiangxi 341700,China;Jiangxi Provincial Experiment Center of Forest Science and Technology,Xinfeng Jiangxi 341600,China;Gaofeng Forestry Farm of Guangxi Zhuang Autonomous Region,Nanning Guangxi Zhuang Autonomous Region 530000,China)

机构地区：[1]江西九连山国家级自然保护区管理局,江西龙南341700 [2]江西省林业科技实验中心,江西信丰341600 [3]广西壮族自治区国有高峰林场,广西南宁530000

出　　处：《南方林业科学》2021年第3期11-14,共4页South China Forestry Science

基　　金：南岭山地特色植物精细解剖专题库,国家标本资源共享平台NSII(项目编号:2005DKA21400);中央财政林业国家级自然保护区补贴项目(2019年度)。

摘　　要：为掌握伞花木1年生播种苗的年生长规律,为伞花木苗木的高效培育提供科学依据,本文采用Logistic生长曲线方程对伞花木1年生播种苗的苗高与地径生长进行拟合,相关系数分别为0.995和0.997,均达极显著水平。根据伞花木1年生播种苗的实际观测值建立动态生长模型,并将其播种苗1年生长过程划分为出苗期、生长初期、生长盛期、生长后期。苗高的速生期为6月中旬-8月下旬,地径速生期为6月上旬-9月上旬,地径速生期比苗高速生期提早20 d结束,地径用46.67%的生长时间完成了65.43%的生长量。1年生苗木地上部分粗壮、地下部分具深根性,其根可深达土层32.92 cm处,且侧根数量较多,分布广。Logistic equation was used to fit the annual growth dynamics of one year Eurycorymbus cavaleriei seedlings,and provides a scientific basis for the efficient cultivation of the seedlings.The results showed that the Logistic growth curve equation fitting coefficient of the height and ground diameter of one year E.cavaleriei seedlings were 0.995 and 0.997 respectively,indicating an extremely significant correlation.The growth process was divided into four stages according to the growth dynamic simulation and actual measurement values,including seedling stage,early growth stage,rapid growth period,and late growth stage.The rapid growth period of height growth was Mid-June to late-August,and the ground diameter was early-June to early-September.The diameter growth was 20 days earlie.During the rapid growth period the diameter growth completed 65.43%increment by using 46.67%time.The aboveground part of E.cavaleriei seedings was thick,and the underground part was characterized by deep root system.The roots can reach 32.92 cm deep in the soil layer,and the lateral roots are more numerous and widely distributed.

关 键 词：伞花木 播种苗 生长规律 LOGISTIC方程 

分 类 号：S792.99[农业科学—林木遗传育种]