杉木林下套种红锥效果研究  

Effect on Intercropping Castanopsis hystrix under Cunninghamia lanceolata

作　　者：罗明永 

机构地区：[1]福建省永安市林业局,福建永安366000

出　　处：《现代农业科技》2011年第15期218-219,222,共3页Modern Agricultural Science and Technology

基　　金：永安市林业局针叶树林冠下套种珍贵树种试验与示范项目

摘　　要：对在杉木林下套种红锥后的林分生长量、叶营养元素含量和叶绿素水平进行测定,结果表明,郁闭度过高或过低的林下套种,均会对红锥生长造成不利影响,综合考虑杉木、红锥的生长状况,以郁闭度为0.5～0.7的杉木林冠下套种红锥,效果较好。与郁闭度为0.9的套种相比,杉木的树高、胸径、单株材积分别提高了2.43%～8.16%、6.64%～11.72%和15.76%～33.15%;红锥的成活率、树高、地径、生物量分别提高了29.83%～34.09%、56.25%～75.00%、54.55%～60.61%和161.22%～192.86%。此外,在郁闭度0.5～0.7的林冠下套种,红锥叶养分含量和叶绿素水平都较高,体现林分小环境条件较适合红锥的生长发育。The stands growth,leaf nutrient content and chlorophyll content were determined after the intercropping Castanopsis hystrix under Cunninghamia lanceolata.The results showed that canopy density planting with too high or too low,both will adversely affect the growth of the Castanopsis hystrix,considering the growth conditions of Castanopsis hystrix and Cunninghamia lanceolata,under the canopy density of Cunninghamia lanceolata was 0.5 to 0.7,the effect of intercropping Castanopsis hystrix was better.Compared to intercropping under canopy density of 0.9,the tree height,DBH,volume of Cunninghamia lanceolata increased by 2.43%～8.16%,6.64%～11.72% and 15.76%～33.15% respectively and survival rate,tree height,diameter,biomass of Castanopsis hystrix increased by 29.83%～34.09%,56.25%～75.00%,54.55%～60.61% and 161.22%～192.86% respectively.In addition,intercropping under canopy density of 0.5～0.7,the leaf nutrient content and chlorophyll levels of Castanopsis hystrix were high,reflecting the environmental conditions of stands were suitable for Castanopsis hystrix growth and development.

关 键 词：红锥 杉木 林下套种 郁闭度 效果 

分 类 号：S758.5[农业科学—森林经理学] S792.27[农业科学—林学]