杉木不同苗龄苗木造林效果分析  

Afforestation Effect of Cunninghamia lanceolata Seedlings at Different Seedling Ages

作　　者：管应诚 Guan Yingcheng(Qucun State-owned Forest Farm,Shunchang County,Fujian Province,Nanping 353200,China)

机构地区：[1]福建省顺昌县曲村国有林场

出　　处：《防护林科技》2019年第7期35-37,共3页Protection Forest Science and Technology

摘　　要：通过采用不同苗龄杉木苗木进行造林试验,结果表明:2年生苗造林具有较大生长优势,造林2年平均树高生长量为2.99 m,平均地径为4.74 cm,是1年生苗木造林树高生长量的1.73倍、地径生长量的1.80倍,存在着极显著差异;2年生苗造林2年生长量是1年生苗木造林3年平均树高、地径生长量的1.11倍和1.05倍。在郁闭成林投入成本对比上,2年生杉木苗造林每667 m^2投入成本为1 884元,比1年生苗林造林成本每667 m^2节约了124元。Afforestation experiments of Cunninghamia lanceolata were conducted at different seedling ages.Result show that:Two-year-old seedling afforestation has large growth advantage,the mean annual tree height is 22.9 m seedlings,the mean groung diameter is 4.74 cm after two years of afforestation,which is 1.73 times&1.80 times as large as 1-year-old afforestation.The tree height and growth of 2-year-old seedlings afforestation for two years is 1.11 times and 1.05 times as large as 1-year-old seedlings affforstation for three years.In the comparison of the input cost of the crown density,the input cost per 667 m^2 of the 2-year-old Cunninghamia lanceolata seedling afforestation is 1 884 Yuan·hm^-2,which saved 124 Yuan than 1-year-old seedlings per 667m 2.

关 键 词：杉木 郁闭 造林试验 成效分析 

分 类 号：S791.27[农业科学—林木遗传育种]