土壤化学特性对油杉人工幼龄林生长性状的影响初探  

Preliminary Study on the Influence of Soil Chemical Characteristics on the Growth Triats of Keteleeria Fortunei in Artificial Young Plantation

作　　者：吴善群 WU Shanqun(Forestry Bureau of Datian County,Datian Fujian 366100,China)

机构地区：[1]福建省大田县林业局,福建大田366100

出　　处：《甘肃林业科技》2024年第4期62-66,共5页Journal of Gansu Forestry Science and Technology

基　　金：三明市引导性科技项目《南酸枣种质资源收集与培育技术研究》(2018-N-2)。

摘　　要：为探究土壤化学特性对油杉人工幼龄林生长性状的影响,本文以福建省三明市大田梅林国有林场、漳州市华安西陂国有林场和泉州市永春碧卿国有林场等3个地区的油杉人工幼龄林(林龄8 a)为研究对象,测定油杉生长形状及不同样地的土壤理化性质,采用相关性分析和通径分析等统计方法,探讨土壤化学特性对油杉幼林生长的影响。结果表明:不同地区的土壤化学特性和油杉人工幼龄林生长性状存在着显著的差异性,不同地区油杉人工幼龄林的平均树高范围为6.21~6.80 m,平均胸径为8.45~10.00 cm,平均材积为0.02~0.03 m^(3),不同地区土壤的pH值范围为4.06~4.71,有效磷含量为1.97~3.47 mg·kg^(-1),总碳含量为1.92%~3.80%,全氮含量为1.51~2.17 g·kg^(-1),全磷含量为221.00~474.00 mg·kg^(-1),铵态氮含量为7.53~9.53 mg·kg^(-1),硝态氮含量为7.23~14.00 mg·kg^(-1)。油杉人工幼龄林生长性状与其所处的土壤化学特性之间存在着显著的相关性,油杉人工幼龄林的平均胸径分别与土壤的pH值、有效磷含量、总碳含量、全氮含量显著相关,平均材积分别与土壤的pH值、有效磷含量、总碳含量、全氮含量、硝态氮含量显著相关,其中影响油杉人工幼龄林生长最重要的土壤化学特性指标为pH值,土壤酸性相对越小越有利于油杉人工幼龄林生长量的提高,由此构建了油杉人工幼龄林平均材积与土壤pH值的回归模型为Y=﹣0.0343871740+0.014088825473X_(1)。This article preliminarily aimed at exploring the influence of soil chemical characteristics on the growth traits of Keteleeria fortunei in artificial young plantation.By using K.fortunei in artificial young plantations(8 a)of Hua′an,Yongchun,and Datian regions as research objects,the effects of soil chemical characteristics on the growth triats of artificial young K.fortuneiwere plantation were analyzed.Through correlation and path analysis ect to explore the effects of soil chemical characteristics on the growth of young plantation.The results showed that there were significant differences between the soil chemical characteristics and growth traits of K.fortunei in artificial young plantation of different regions.The average tree height,average DBH,average volume,pH,the effective phosphorus content,total carbon content,total nitrogen content,total phosphorus content,the ammonium nitrogen content,the nitrate nitrogen content of K.fortunei in artificial young plantation ranged from 6.21~6.80 m,8.45~10.00 cm,0.02~0.03 m^(3),4.06~4.71,1.97~3.47 mg·kg^(-1),1.92%~3.80%,1.51~2.17 g·kg^(-1),221.00~474.00 mg·kg^(-1),7.53~9.53 mg·kg^(-1),7.23~14.00 mg·kg^(-1),respectively.Above all,there was a significant correlation between the growth traits and the correlative soil chemical characteristics of K.fortunei in artificial young plantation.The average DBH of K.fortunei in artificial young plantation was significantly correlated with soil pH value,available phosphorus content,total carbon content,and total nitrogen content.The average volume was significantly correlated with soil pH value,available phosphorus content,total carbon content,total nitrogen content,and nitrate nitrogen content.Among them,the most important soil chemical characteristic index that affects the growth of K.fortunei in artificial young plantation was pH value.The smaller the soil content of acidity,the more favorable it was for the growth of K.fortunei in artificial young plantation.Therefore,a regression model between the average volume and soi

关 键 词：油杉 土壤化学特性 生长 影响 

分 类 号：S791.150.1[农业科学—林木遗传育种]