三倍体毛白杨无性系人工林林地土壤养分消耗与林木生长研究  

Annual Change of Soil Nutrients in Triploid Populus tomentosa Plantation and Its Correlation with Tree Growth

作　　者：赵雪梅[1] 王海燕[1] 孙向阳[1] 邹妍[1] 康向阳[2] 

机构地区：[1]北京林业大学水土保持学院,北京100083 [2]北京林业大学生命科学与技术学院,北京100083

出　　处：《林业科学研究》2008年第3期419-423,共5页Forest Research

基　　金：“十一五”国家科技支撑项目(2006BAD32B02-01);国家林业局专项课题(2006-66);北京林业大学研究生基金资助

摘　　要：Split-plot field experiment with 2-year-old triploid Populus tomentosa clone S1,S6,S8 and S11 as experimental materials and diploid clone S10 as control was carried out in Wei County,Xintai City,Heibei Province.Annual change of soil nutrients in different plantation and tree growth indices of height,DBH and volume were determined.The results showed that soil pH increased and the content of organic matter decreased obviously in a year.Total N,available N,total P,available P,and total K decreased to some extents,while no regulation was found for available K.Different clones had no significant effect on the decline of the soil nutrients.Compared with the control S10,the triploid Populus tomentosa grew much better and took up more soil nutrients,with S8 as the best and followed by S1 and S6.Split-plot field experiment with 2-year-old triploid Populus tomentosa clone S1,S6, S8 and S11 as experimental materials and diploid clone S10 as control was carried out in Wei County, Xintai City, Heibei Province. Annual change of soil nutrients in different plantation and tree growth indices of height, DBH and volume were determined. The results showed that soil pH increased and the content of organic matter decreased obviously in a year. Total N, available N, total P, available P, and total K decreased to some extents, while no regulation was found for available K. Different clones had no significant effect on the decline of the soil nutrients. Compared with the control S10, the triploid Populus tomentosa grew much better and took up more soil nutrients, with S8 as the best and followed by S1 and S6.

关 键 词：三倍体毛白杨 土壤养分 地力衰退 林木生长 

分 类 号：S792.117[农业科学—林木遗传育种]