苗木类型、坡向和坡位对早期杉木林的影响

Type,Aspect and Slope Position of Seedlings of Cunninghamia lanceolatain Early Stage

选择苗木类型、坡向和坡位等3个对闽东北部杉木人工林有影响的因素来进行试验,对不同苗木类型、坡向、坡位影响杉木早期的生长情况进行研究。结果表明:杉木早期生长在不同苗木类型、坡向、坡位之间的成活率、地径和树高均存在显著差异;以A3B2C3组合(扦插苗、半阳坡、坡下)有利杉木的早期生长,该组合3年生杉木地径达5.42cm、树高达220.4cm;以A2B1C3组合(插条、阳坡、坡上)不利于杉木的早期生长,3年生杉木地径仅为2.79cm,树高为119.1cm。

Three factors （type,aspect and slope position）influencing Cunninghamia lanceolata plantation in north-ern Fujian Province were selected to conduct experiments.Effects of types,aspect ＆amp; slope position of different seedlings on growth of C.lanceolata were studied.Result shows that the survival rate,ground diameter ＆ tree height among types,aspect ＆ slope position of different types ,aspect ＆ slope position of different seedlings for early growth of C.lanceolata all have significant differences;A3 B2 C3 combination（cutting seedlings,semi-sunny slope,the lower part of the slope）is favorable for early growth of C.lanceolata.The ground diameter and tree height of （3-year-old C.lanceolata ）the combination（A3 B2 C3 ）is 5.42 cm,220.4 cm,respectively;A2 b1 C3 combi-nation（cutting seedlings,sunny slope,the lower part of the slope）is not in favor of early growth of C.lanceolata. Ground diameter and tree height of 3-year-old C.lanceolata is 79 cm and 1 1 9.1 cm respectively.