• 土壤肥力监测 •

### 杉木林地土壤肥力观测初探

1. 1. 贵州省林业科学院 贵阳 550011
2. 贵州省林业厅 贵阳 550011
• 出版日期:1999-01-25 发布日期:1999-09-25

### A PRELIMINARY STUDY ON THE SOIL FERTILITY MONITORING IN CHINESE FIR WOODLAND

Botao Chen1,Xin Wang1,Jianqiang Yin2,Jianyong Yao2,Hong Li2

1. 1. Guizhou Academy of Forestry Sciences Guiyang 550011
2. Forestry Bureau of Guizhou Province Guiyang 550011
• Online:1999-01-25 Published:1999-09-25

Abstract:

The trial of soil fertility monitoring was carried out in Chinese fir woodland at Zhongchao(25°44′to 26°31′N latitude, 108°37′to 109°31′E longitude, Altitude 500 to 670 m), Located in Liping Countv, Guizhou Province. The trial area was 1.44 hm2. The trial resuits were as follows:1. After fertilization, the chemical and physical properties of soil in Chinese fir woodland improved apparently. In the second year after fertilization, the contents of available P in the P2 treatment and the P2K1treatment increased 13% and 21% respectively, compared with control, while the content of the availableK and the slowly available K increased 20% and 19.5% respectively comparing with control. In the fourthyear after fertilization, the content of P in the treatment of P2 and P2K1 increased 25% and 28% comparing to control, and the rapidly available K and the slowly available K in the P2K1 treatment increased 21% and 29% respectively.2. The soil fertility of Chinese fir woodland decreased year by year after planting. In the fifth year after planting, the decline proportion of N, P and K content in the soil located at 40 cm from the trunk, was lower than that in the soll which was 80 cm from the trunk.