Comparisons of Yield, Water Use Efficiency, and Soil Microbial Biomass as Affected by the System of Rice Intensification

被引：40

作者：

Zhao, Limei ^{[1
,2
,3
]}

Wu, Lianghuan ^{[1
,2
]}

Li, Yongshan ^{[4
]}

Animesh, Sarkar ^{[1
,2
]}

Zhu, Defeng ^{[5
]}

Uphoff, Norman ^{[6
]}

机构：

[1] Zhejiang Univ, Minist Educ, Key Lab Environm Remediat & Ecosyst Hlth, Coll Environm & Resource Sci, Hangzhou 310029, Zhejiang, Peoples R China

[2] Zhejiang Univ, Zhejiang Prov Key Lab Subtrop Soil & Plant Nutr, Coll Environm & Resource Sci, Hangzhou 310003, Zhejiang, Peoples R China

[3] Inner Mongolia Agr Univ, Coll Ecol & Environm, Hohhot, Peoples R China

[4] Shanxi Acad Agr Sci, Cotton Res Inst, Yuncheng, Shanxi, Peoples R China

[5] China Natl Rice Res Inst, Hangzhou, Zhejiang, Peoples R China

[6] Cornell Int Inst Food Agr & Dev, Ithaca, NY USA

来源：

COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS | 2010年 / 41卷 / 01期

关键词：

Microbial biomass; system of rice intensification (SRI); water use efficiency; yield; NITROGEN; CARBON; DYNAMICS; SRI; AVAILABILITY; FUMIGATION; PHOSPHORUS; EXTRACTION; MANAGEMENT; FERTILIZER;

D O I：

10.1080/00103620903360247

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

To compare the effects of the system of rice intensification (SRI) on yield, water use efficiency, and microbial biomass in associated rice soils, a field experiment was conducted in 2004 at the Agriculture Experimental Farm of Zhejiang University in Zhejiang Province, China. The treatments evaluated were traditional flooding (TF) vs. SRI cultivation methods. Grain yield in the SRI treatment was 26.4% greater than that in the TF treatment, reducing water use by 461.5mm. Compared to TF, SRI increased water use efficiency by 91.3% and irrigation water use efficiency by 194.9%. Soil microbial indicators during the rice-growing season also diverged between TF and SRI. Microbial biomass C (MBC) was in the range of 101-196mgkg-1 for TF vs. 113-224mgkg-1 for SRI; microbial biomass N (MBN) was in the range of 14-33mgkg-1 for TF vs. 28-53mgkg-1 in SRI. Compared to TF, SRI significantly increased both MBC and MBN, regardless of sampling date.

引用

页码：1 / 12

页数：12

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