Role of Organic Matter in Formation and Stability of Aggregates in Mulberry Plantation SoilsEnglish Full Text

LU SHENGGAO Collage of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029 (China)

Abstract: The role of organic matter in the formation and stability of soil aggregates in mulberry plantation in the Hang-Jia-Hu Plain, northern Zhejiang Province, was evaluated in this study. A positive correlation was found between water-stable aggregate contents and organic matter contents in the mulberry plantation soils, which supported the hypothesis that organic matter was the main cementing agent in formation of aggregates. A close correlation was also found between stability of aggregate and organic matter contents. Regression analysis showed that total nitrogen content was also an indicator of water-stable aggregate content and stability. The aggregate size distribution indicated that the water-stable aggregates 1--0.25 mm in diameter were the major component of the aggregates in the mulberry plantation soils. The organic matter contents of aggregates ranging from 5 to 0.25 mm in diameter increased with the decrease of aggregate sizes, and the aggregates 1-0.25 mm in diameter had the maximum organic matter content.

Keywords：

mulberry plantation soil; organic matter; water-stable aggregates;

Series：
(D) Agriculture
Subject：
Fundamental Science of Agriculture; Agronomy
Classification Code：
S155

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Role of Organic Matter in Formation and Stability of Aggregates in Mulberry Plantation SoilsEnglish Full Text

LU SHENGGAO Collage of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029 (China)

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