Microbial Properties of a Loess Soil as Affected by Various Nutrient Management Practices in the Loess Plateau of China

被引：8

作者：

Yang, Xueyun ^{[1
,2
]}

Zhou, Shasha ^{[1
]}

Sun, Benhua ^{[1
]}

Wang, Baiqun ^{[3
]}

Zhang, Shulan ^{[2
]}

Gu, Qiaozhen ^{[1
]}

机构：

[1] NW A&F Univ, Coll Resources & Environm, Yangling 712100, Shaanxi, Peoples R China

[2] NW A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China

[3] Chinese Acad Sci, Soil & Water Conservat Inst, Yangling, Shaanxi, Peoples R China

来源：

COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS | 2010年 / 41卷 / 08期

关键词：

Long-term fertilization experiment; microbial biomass carbon; microbial biomass nitrogen; microbial biomass phosphorus; total phosphorus; ORGANIC-MATTER; BIOMASS PHOSPHORUS; EXTRACTION METHOD; NITROGEN; FUMIGATION; REGION; MAIZE;

D O I：

10.1080/00103621003646048

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Microbial biomass phosphorus (MBP) and its relationships with other biological and chemical properties were studied on loess soil with an 11-year long-term fertilization experiment. The results indicated that inorganic fertilizers (F) improved soil microbial biomass carbon (MBC), nitrogen (MBN), and MBP levels and F plus maize stalk (SNPK) improved MBC and MBN. Manuring markedly increased soil MBC, MBN, and MBP levels. Fertilization decreased the ratios of MBC/MBN, MBC/MBP, and MBN/MBP. Microbial biomass phosphorus was positively and linearly correlated with MBC, MBN, organic carbon (SOC), total phosphorus (TP), water-soluble P, and Olsen P but negatively correlated with soil pH. Microbial biomass phosphorus constituted 2% of TP on control (CK) and inorganic fertilizer treatments and 12% on manure plots. Microbial biomass phosphorus to Olsen P ratios were 50% on CK, F, and SNPK and 80% on manure treatments. Measurements of MBP in soil containing high Olsen P were subject to analytical problems of unknown reasons.

引用

页码：956 / 967

页数：12

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