不同育苗密度对杉木实生苗生长的影响  

Effect of different cultivation densities on the growth of Cunninghamia lanceolata seedlings

作　　者：伊昊 YI Hao(Guanzhuang State-owned Forest Farm,Shaxian Country,Fujian,Sanming 365050,China)

机构地区：[1]福建省沙县官庄国有林场,福建三明365050

出　　处：《内蒙古林业科技》2024年第4期26-28,52,共4页Journal of Inner Mongolia Forestry Science and Technology

基　　金：三明市林业科技项目〔明林综(2019)65号〕。

摘　　要：为了提高杉木(Cunninghamia lanceolata)实生苗木质量和造林效果,开展杉木实生大田苗不同育苗密度试验,试验结果表明:育苗密度对杉木实生苗的苗高、地径、生物量、苗木质量指数均有显著影响(P<0.05),高径比随着育苗密度的增加而增大;杉木苗高、地径、苗木单株生物量与苗木质量指数值均随育苗密度呈现负相关。综合试验数据得出,杉木实生苗育苗密度在70株·m^(−2)时育苗密度最佳,苗木质量指数最高可达0.16,苗木单株生物量可达16.36 g,为杉木实生苗培育提供有效参考。In order to improve the quality and afforestation effect of Cunninghamia lanceolata seedlings,different cultivation densities were conducted on Cunninghamia lanceolata seedlings in large fields.The experimental results showed that cultivation density had a significant effect on the seedling height,ground diameter,biomass,and seedling quality index value of Cunninghamia lanceolata seedlings(P<0.05).The height to diameter ratio increased with the increase of cultivation density.Under the conditions of this experiment,the height,ground diameter,biomass per plant,and quality index value of Cunninghamia lanceolata seedlings all showed a negative correlation with cultivation density.Based on the comprehensive experimental data,the optimal cultivation density for Cunninghamia lanceolata seedlings was 70 plants·m^(−2).The quality index value of seedlings under this density could reach up to 0.16,and the biomass per plant could reach 16.36 g,which provided an effective reference for the cultivation of Cunninghamia lanceolata seedlings.

关 键 词：杉木 育苗密度 生长量 

分 类 号：S791.27[农业科学—林木遗传育种]