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杉林连栽对土壤养分的影响及其反馈(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
1991年03期
Page:
44-49
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
EFFECT OF CONTINUOUS CROPPING WITH CHINESE FIR UPON SOIL NUTRIENTS AND ITS FEEDBACK
Article ID:
1000-2006(1991)03-0044-06
Author(s):
Zhou Xuejin Luo Ruying Ye Jingzhong
Department of Foresetry
Keywords:
Chinese fir Continuous cropping Soil nutrient Degradation of soil fertility
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1991.03.009
Document Code:
A
Abstract:
On the dark red soils in Nanping County of Fujian Province, plots being similar in the shape and properties of soil but different in the frequency of continous cropping with Chinese fir were selected to from a ecological sequence for transverse comparison. From the results of survey and analyses it turned out that in the continuous cropping process Al-P,Fe-P, and Ca-P, Ex-K, Ex-Ca, and to a certain extent the total N content decreased, owing to the influence of. the biological nature of Chinese fir or the cutting and silvicultural measures on it; and the storages of various nutrients in soil also decreased to a large extent due to the reason that the thickness of surface soil was thinned by soil erosion as the result of clear cutting and silvicultural measures. It followed from this that the growth of Chinese fir also decreased from a cropping term to another. Results of correlation demonstrated that between the aboved-mentioned nutrient decreasing tendencies the effect of the latter was far greater.

References

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Last Update: 1900-01-01