METHANE MITIGATION IN FLOODED LOUISIANA RICE FIELDS

被引：69

作者：

LINDAU, CW

BOLLICH, PK

DELAUNE, RD

MOSIER, AR

BRONSON, KF

机构：

[1] LOUISIANA STATE UNIV,CTR NUCL SCI,BATON ROUGE,LA 70803

[2] LOUISIANA EXPT STN,RICE RES STN,CROWLEY,LA 70527

[3] USDA ARS,FT COLLINS,CO 80522

来源：

BIOLOGY AND FERTILITY OF SOILS | 1993年 / 15卷 / 03期

关键词：

METHANE EMISSIONS; FLOODED SOIL; GREENHOUSE GAS; WETLAND RICE; MITIGATION;

D O I：

10.1007/BF00361607

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

A field experiment was conducted to determine whether selected nitrification inhibitors (encapsulated calcium carbide and dicyandiamide) and SO4-2-containing compounds [(NH4)2SO4 and Na2SO4] had mitigating effects on CH4 emissions from flooded rice. Microplots were established within a rice bay drill-seeded with the Texmont rice cultivar and CH4 fluxes were measured over the main rice cropping season. Methane emissions over the 77-day sampling period were approximately 230, 240, 260, 290, 310, and 360 kg CH4 ha-1 from the calcium carbide, Na2SO4-rate II, Na2SO4-rate I, (NH4)2SO4, dicyandiamide, and urea (control) treatments, respectively. Reductions in CH4 evolution, compared to the control, ranged from 14 to 35%, depending on treatment. The selected inhibitors and SO4-2-containing compounds appear to be effective in reducing the CH4 emitted from flooded rice fields.

引用

页码：174 / 178

页数：5