不同株行距对青钱柳人工幼林生长的影响  

Effects of Different Plant and Row Spacings on Growth of Cyclocarya paliurus Young Plantation

作　　者：韩立新 HAN Lixin(Renli Forestry Station in Shitai County,Shitai Anhui 245100)

机构地区：[1]石台县仁里林业站,安徽石台245100

出　　处：《现代农业科技》2021年第18期140-142,共3页Modern Agricultural Science and Technology

摘　　要：为研究不同株行距对青钱柳人工幼林生长的影响,试验设置了6种株行距,即20 cm×20 cm、40 cm×40 cm、70 cm×70 cm、90 cm×90 cm、120 cm×120 cm、160 cm×160 cm,研究了不同株行距对青钱柳苗高、地径和冠幅的影响。结果表明:苗木种植1~2年内,株行距越小的苗高越大,但种植3年后株行距越大的苗高越大;苗木刚种植时株行距对苗木地径产生的影响不明显,种植2年后,株行距越大的苗木地径越大,但当株行距增大到一定范围后,对地径的影响较小;苗木冠幅基本上呈现出随株行距增大而增大的趋势,但当株行距增加到一定范围后,对冠幅的影响较小。青钱柳人工幼林在株行距90 cm×90 cm的条件下综合指标表现较好,建议作为当地栽培的初始密度。In order to study the effects of different plant and row spacings on the growth of Cyclocarya paliurus young planta-tion,the experiment set 6 kinds of plant and row spacings,namely 20 cm×20 cm,40 cm×40 cm,70 cm×70 cm,90 cm×90 cm,120 cm×120 cm,160 cm×160 cm.It studied the effects of different plant and row spacings on seedling height,ground diameter and crown width of Cyclocarya paliurus.The results showed that within 1-2 years of seedling planting,the smaller the plant and row spacing,the higher the seedling height,but 3 years after seedling planting,the larger the plant and row spacing,the higher the seedling height.When the seedlings were just planted,the plant and row spacing had no obvious effect on the seedling ground diameter;after 2 years,the larger the plant and row spacing,the larger the seedling ground diameter,but when the seedling plant and row spacing increased to a certain range,it showed little effect on the ground diameter.The crown width of seedlings basically showed a trend of increasing with the increase of the plant and row spacing,but when the plant and row spacing increased to a certain range,it showed little effect on the crown width.The comprehensive index of Cyclocarya paliurus young plantation under the condition of 90 cm×90 cm plant and row spacing performed well,which was recommended as the initial density for local cultivation.

关 键 词：青钱柳 株行距 苗高 地径 冠幅 

分 类 号：S792.12[农业科学—林木遗传育种]