红皮糙果茶幼苗生长节律研究  

Study on Growth Rhythm of Seedlings of Camellia crapnelliana

作　　者：周祥斌 陈雪梅 田雪琴 林玮 ZHOU Xiangbin;CHEN Xuemei;TIAN Xueqin;LIN Wei(Lianshan Forest Farm of Guangdong/Administration of Guangdong Yingyangguan National Forest Park,Qingyuan Guangdong 513200;Foshan Institute of Forestry/Foshan Botanical Garden,Foshan Guangdong 528222)

机构地区：[1]广东省连山林场/广东鹰扬关森林公园管理处,广东清远513200 [2]佛山市林业科学研究所/佛山植物园,广东佛山528222

出　　处：《现代农业科技》2023年第5期138-140,共3页Modern Agricultural Science and Technology

基　　金：2018广东省林业科技创新项目(2018KJCX047);2019广东省林业科技创新项目(2019KJCX029)。

摘　　要：为了解红皮糙果茶的苗期生长规律和科学管理红皮糙果茶幼苗,定期观测了红皮糙果茶一年生实生苗生长状况,并对苗高及地径的生长曲线进行Logistic方程拟合。结果表明,红皮糙果茶幼苗的苗高和地径年累积生长曲线均呈现“S”形,生长曲线拟合程度高,决定系数达到0.996、0.997。9—10月最大苗高生长量可达5.68 cm,同期地径最大生长量达0.66 mm。苗高及地径的生长期均可划分为3个阶段,即生长前期、速生期以及生长后期。苗高速生期历时165 d(2021年5月22日至11月3日),占总生长时间的45.8%;地径速生期历时156 d(2021年5月29日至11月1日),占总生长时间的43.33%。In order to understand the growth rhythm of Camellia crapnelliana in seedling stage and manage the seedling scientifically,the growth status of annual seedling was observed regularly,and the growth curve of seedling height and ground diameter was fitted by Logistic equation.The results showed that the annual accumulated growth curves of seedling height and ground diameter of Camellia crapnelliana all showed an"S"shape.The fitting degree of growth curves was high,and the coefficient determination reached 0.996 and 0.997.From September to October,the maximum growth of seedling height was 5.68 cm,and the maximum growth of ground diameter was 0.66 mm in the same period.The growth stages of seedling height and ground diameter could be divided into three stages,including early growth stage,rapid growth stage and late growth stage.The rapid growth of seedlings height lasted for 165 d(from May22 to November 3,2021),accounting for 45.8%of the total growth time.The rapid growth period of ground diameter lasted for 156 d(from May 29 to November 1,2021),accounting for 43.33%of the total growth time.

关 键 词：红皮糙果茶 幼苗 苗高 地径 生长节律 

分 类 号：S685.99[农业科学—观赏园艺]