摘要
杉木是我国南方重要的速生用材树种,但长期的连栽会引起地力衰退。通过对杉木拟赤杨混交林土壤的物理性质和化学性质等进行研究,认为混交林土壤结构状况、水分物理性质均比杉木纯林得到较大程度的改善,同时0~20cm土层有机质、全N、全P比杉木纯林增加12.43%、14.29%和7.32%;水解N、速效P、速效K分别增加15.49%,7.89%和6.78%,混交林土壤肥力状况明显优于杉木纯林。
This paper deals with the soil fertility under Chinese fir and its mixed stand with Alniphyllum fortunei .Results revealed that soil texture,water condition and other physical properties under mixed stand are much better than that of Chinese fir pure stand.Compared with Chinese fir pure stand,the soil organic matter,total N,total P,hydrolyzable N,available N,available P and available K under mixed stand is increased by 12 43%,14 29%,7 32%,15 49%,7 89% and 6 78% respectively. Author’s address Jianou Forestry Technique Spread Center,Jianou,353100 Fujian Province PRC
出处
《江苏林业科技》
1998年第3期10-13,共4页
Journal of Jiangsu Forestry Science & Technology
关键词
杉木
拟赤杨
混交林
土壤肥力
Chinese fir
Alniphyllum fortunei
Mixed stand
Soil fertility