欢迎访问林业科学,今天是

林业科学 ›› 1999, Vol. 35 ›› Issue (zk): 124-127.

• 土壤肥力监测 • 上一篇    下一篇

杉木土壤肥力观测及叶片营养分析

何蓉1,蒋云东1,曾芳群1,李国良2,余才记2   

  1. 1. 云南省林业科学研究院 昆明 650204
    2. 云南八大河乡江外林场 罗平 655802
  • 出版日期:1999-01-01 发布日期:1999-09-25

SOIL FERTILITY MONITORING AND ANALYSIS ON LEAVE NUTRIENT ELEMENTS FOR CHINESE FIR

Rong He1,Yundong Jiang1,Fangqun Zeng1,Guoliang Li2,Caiji Yu2   

  1. 1. Yunnan Academy of Forestry Kunming 650204
    2. Jiangwai Forest Farm of Badahe Village Yunnan Luoping 655802
  • Online:1999-01-01 Published:1999-09-25

关键词: 杉木, 土壤肥力, 叶片营养

Abstract:

The results of soil monitoring in the fourth year of plantation indicate that afforestation with Chinese fir leads to the decrease in contents of organic matter, rapidly available phosphorus, rapidly available potassium, hydrolytic acid, exchangeable Mg2+, moreover leads to the decrease of pH value, so that, the soil fertility of forest land tends to degeneration, however fertilization can avoid soil degeneration and improve soil fertility of the forest land. When calcium magnesium phosphate is used as base fertilizer, soil fertility indexes, such as organic matter, rapidly available nitrogen, rapidly available phosphorus, rapidly available potassium, exchangeable Ca2+, exchangeable Mg2+ and the pH value can be increased. The results also show that the increase of soil fertility indexes is related with the amount of calcium magneaium phosphate applied. The contents of the 5 main nutrients in leaves of Chinese fir sapling are related with the season and the stand age. The contents of all the nutrients in winter are higher than those in summer, as the age of stand increases, the content of total nitrogen decreases while that of total phosphorus, total potassium, total calcium, total magnesium increases.

Key words: Chinese fir, Soil fertility, Nutrient of leaves