文献类型：期刊文献

中文题名：不同氮素水平对米老排苗期生长节律的影响

英文题名：Effects of Nitrogen Fertilization on Growth Rhythm of Mytilaria laosensis Seedlings

作者：刘福妹[1,2] 韦菊玲[1] 庞圣江[1] 劳庆祥[1] 陈建全[1] 谌红辉[1]

第一作者：刘福妹

机构：[1]中国林科院热带林业实验中心,广西凭祥532600;[2]广西友谊关国家森林生态系统定位观测研究站,广西凭祥532600

年份：2018

卷号：47

期号：6

起止页码：90-94

中文期刊名：西部林业科学

外文期刊名：Journal of West China Forestry Science

收录：CSTPCD;;北大核心:【北大核心2017】；

基金：中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2017QA027);中国林科院热带林业实验中心主任基金项目(RL2015-07)

语种：中文

中文关键词：米老排;氮素营养;Logistic生长方程;生长节律

外文关键词：Mytilaria laosensis;nitrogen fertilization;Logistic equation;growth rhythm

分类号：S792.99

摘要：为明确米老排苗期生长的最佳施肥时期和施氮量,观测了1年米老排苗期的生长节律,并拟合获得Logistic生长方程;分析了100mg/株、200mg/株、400mg/株、600mg/株和800mg/株5个氮素营养水平对米老排苗木5-10月份生长节律的影响。结果表明,(1)米老排苗高和地径的Logistic方程拟合效果显著(R_H^2=0. 990,R_D^2=0. 978,P<0. 005),生长节律表现出"慢-快-慢"的阶段性节律;(2)氮素营养对米老排苗高生长的影响要早于地径;(3)米老排的速生期始于6月中旬,最佳施氮量为200mg/株。
To explicit the optimal fertilization period and nitrogen doses of Mytilaria laosensis seedlings,by using the non-linear models of Logistic,the growth rhythm of one-year-old seedlings were studied,as well as the growth performances (from May to October)under five nitrogen levels (100mg/seedling,200mg/seedling,400 mg/seedling,600mg/seedling and 800mg/seedling).The results showed that:(1)the fitness Of height and ground diameter Logistic equations were up to 0.990(RH2)and 0.978(RD2),and the growth rhythm showed significant stages of‘slow-fast-slow'trend;(2)the nitrogen fertilization showed an earlier effect on height than ground diameter;(3)the fast-growing stage of seedlings started in mid of June,and 200mg N/seedling was the most appropriate-dose for M.laosensis.