青钱柳不同株行距对幼林生长和叶片生物量的影响  

Experiment on Different Plant-Row Spacing of Cyclocarya paliurus on Growth and Leaf Biomass

作　　者：吕明亮 徐高福 何俊 柏明娥[3] LU Ming-liang;XU Gao-fu;He Jun;BAI Ming-e(Quzhou Kecheng Forestry Extension Center of Zhejiang,Quzhou 324000,China;Chun’an Xinanjiang Ecological Development Group Corporation of Zhejiang,Chunan 311700,China;Zhejiang Academy of Forestry,Hangzhou 310023,China)

机构地区：[1]衢州市柯城区林业技术推广中心,浙江衢州324000 [2]淳安县新安江生态开发集团有限公司,浙江淳安311700 [3]浙江省林业科学研究院,浙江杭州310023

出　　处：《浙江林业科技》2020年第2期51-56,共6页Journal of Zhejiang Forestry Science and Technology

基　　金：浙江省林业科研成果推广项目(2018B06);浙江省省属科研院所扶持专项(2017F30019)。

摘　　要：选用30 cm×30 cm,50 cm×50 cm,80 cm×80 cm,100 cm×100 cm,150 cm×150 cm和200 cm×200 cm 6种不同株行距进行栽培试验,研究株行距对青钱柳Cyclocarya paliurus幼林生长和叶片生物量的影响。结果表明,种植后第1至第2年,株行距大的苗高大于株行距小的苗高,但从种植第3年开始,株行距小的苗高逐渐大于株行距大的苗高;种植第3年,苗木地径最大的为株行距100 cm×100 cm,与株行距30 cm×30 cm,50 cm×50 cm和80 cm×80 cm的苗木地径均差异显著(P<0.05),但与株行距150 cm×150 cm和200 cm×200 cm的苗木地径无显著差异;苗木的冠幅生长随着株行距的增大而增大,但株行距(100 cm×100 cm)^(200 cm×200 cm)之间变化幅度已不明显;单株叶片生物量最大的为株行距100 cm×100 cm,株行距越小,单株叶片生物量越小,而林地单位面积生物量越大。青钱柳的株行距以100 cm×100 cm的综合指标较好,是以叶用为栽培目标的适宜密度。3 000 leaf-use Cyclocarya paliurus seedlings(1-year) were planted with six densities(30 cm×30 cm, 50 cm×50 cm, 80 cm×80 cm, 100 cm×100 cm, 150 cm×150 cm and 200 cm×200 cm) for experiment. In May and September 2017, May and November 2018 and October 2019, determinations were carried out on growth traits of seedling and in October 2019, on single seedling biomass and stand unit area leaf biomass. The results showed that height growth of seedlings with high density was larger than that with lower one 1-2 year later, but it became opposite 3 years later. Ground diameter of seedlings with density of 100 cm×100 cm was the largest. Canopy of seedlings increased with the increase of density, but the range from 100 cm×100 cm to 200 cm×200 cm was not significant. Seedlings with density of 100 cm×100 cm had the biggest single plant leaf biomass, the experiment showed that the smaller the density, the smaller the single plat leaf biomass, the larger the per unit area biomass.

关 键 词：青钱柳 株行距 人工栽培 叶片生物量 

分 类 号：S792.13[农业科学—林木遗传育种]