|Table of Contents|

Decomposition Characteristics of Soybean stalk under Different Stalk Returning Method(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2010年03期
Page:
479-482
Research Field:
Publishing date:

Info

Title:
Decomposition Characteristics of Soybean stalk under Different Stalk Returning Method
Author(s):
KUANG En-jun
Institute of Soil Fertilizer and Environment Resource, Heilongjiang Academy of Agricultural Sciences, The Key Laboratory of Soil Environment and Plant Nutrition of Heilongjiang Province, Harbin 150086，Heilongjiang，China
Keywords:
Soybean; Stalk returning; Decomposition regularity
PACS:
S141.4
DOI:
10.11861/j.issn.1000-9841.2010.03.0479
Abstract:
Net bag method was used to determine nutrition decomposing characteristics of organic carbon, N, P, and K of soybean stalks under two different crop stalk returning approaches. The results showed that after 150 days, decomposition rate of soybean stalks were between 39.2%~55.9%. The trend of stalk decomposition of soil coverage treatment was higher than open-air treatment. Tissue of soybean stalk became loose after decomposing. Organic carbon decomposition rate of straw was increased with time under open-air and soil coverage treatments. The soybean straw decomposition rate was 40.7%~59.2% after 150 days. Adding decomposition accelerator had not improved the speed of organic C decomposing. The decomposition rate of N, P and K were 60.1%~65.4%, 15.4%~39.4%, 74.6%~86.4%, respectively.

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