不同栽植代数29年生杉木林土壤腐殖质及结合形态的研究

Abstract

Abstract:

The humic composition(HA and FA), light density of humic acid, combined forms of the soils in the stands of broad-leaved forest and Chinese fir stand of the first, the second, the third planting were studied comparatively.The results indicated that, with the substitution of Chinese fir plantation for broad-leaved forest and the increasing continuous planting of Chinese fir, the soil organic matter and humus decreased, the ratio of HA to FA and E₄ value went down, E₄/E₆ increased, loosely and tightly combined humus contents and its ratio descended.The soil humus quality declined obviously, which is one of the main reasons for soil degradation at the sites with continuous planting of Chinese fir.

Key words: Continuous planting of Chinese fir, Soil humus, The value of HA/FA, Ratio of loosely to tightly combined humus, E₄ value, Broad-leaved forest

Yusheng Yang,Renhui Qiu,Xintuo Yu,Zongming He,Baolong Huang. STUDY ON SOIL HUMUS AND FERTILITY CHARACTERISTIC IN THE 29 YEAR-OLD PLANTATIONS OF CHINESE FIR ON DIFFERENT ROTATIONS[J]. Scientia Silvae Sinicae, 1999, 35(3): 116-119.

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References 0

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STUDY ON SOIL HUMUS AND FERTILITY CHARACTERISTIC IN THE 29 YEAR-OLD PLANTATIONS OF CHINESE FIR ON DIFFERENT ROTATIONS

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