Soil organic carbon fractions and management index after 20 yr of manure and fertilizer application for greenhouse vegetables

文献类型： 外文期刊

第一作者： Lou, Y.

作者： Lou, Y.;Xu, M.;Wang, W.;Sun, X.;Liang, C.

作者机构：

关键词： total organic carbon;soil organic carbon;nitrogen: 7727-37-9;agrichemical;fertilizer;phosphorus: 7723-14-0;agrichemical;fertilizer;potassium: 7440-09-7;agrichemical;fertilizer;inorganic fertilizer: agrichemical;fertilizer;organic manure: agrichemical;fertilizer;water-soluble organic carbonChina: Asia;Palearctic region;crop yield;microbial biomass;soil productivity;carbon sequestration;Pearson's correlation coefficient;manure application;nutrient management practice;management index

期刊名称：SOIL USE AND MANAGEMENT （ 影响因子：2.95； 五年影响因子：3.109 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Impacts of organic manure and inorganic fertilizer on total organic carbon (C-T), water-soluble organic C (C-WS), microbial biomass C (C-MB), particulate organic C (C-P), labile organic C (C-L), C storage and sequestration, and C management index (CMI) in surface soil (0-20 cm) were investigated in a 20-yr field experiment under a greenhouse vegetable system in northeast China. The treatments included unfertilized control (CK), N fertilizer (N), balanced NPK fertilizer (NPK), organic manure alone (M) and the NPK fertilizer combined with the manure (MNPK). Under the treatments of N and NPK, C-T content and C storage were not significantly changed over the experimental period, while C-WS, C-MB, C-P, C-L concentrations and CMI were significantly increased compared with the unfertilized control. In comparison with the control, the manure treatments, M and MNPK, significantly increased C-T content and C storage, sequestrating organic C of 8.9 and 9.2 Mg/ha, respectively. The M and MNPK treatments showed higher C-WS, C-MB, C-P and C-L concentrations and CMI than the other three treatments. Pearson's correlation coefficients were used to show that C-WS, C-MB, C-P, C-L and CMI could be useful indicators for assessing soil quality and total C changes. The M treatment is effective in sequestrating soil C, but resulted in lower crop yield compared with the NPK treatment. The MNPK treatment showed the greatest increases in crop yield and C sequestration in the greenhouse vegetable system.

分类号： S15

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