EFFECT OF A NEW NITRIFICATION INHIBITOR (WAX COATED CALCIUM CARBIDE) ON TRANSFORMATIONS AND RECOVERY OF FERTILIZER NITROGEN BY IRRIGATED WHEAT

被引：60

作者：

FRENEY, JR

SMITH, CJ

MOSIER, AR

机构：

[1] Division of Plant Industry, CSIRO, Canberra, 2601, A.C.T.

[2] Institute for Sustainable Development, Department of Agriculture, Tatura, 3616, Victoria

[3] United States Department of Agriculture, Agricultural Research Service, Fort Collins, 80522, CO, G.P.O. Box E

来源：

FERTILIZER RESEARCH | 1992年 / 32卷 / 01期

关键词：

NITROGEN LOSS; DENITRIFICATION; ACETYLENE; IRRIGATION; UREA; NITROGEN ISOTOPES;

D O I：

10.1007/BF01054388

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

The effectiveness of wax coated calcium carbide to provide a slow release of acetylene to inhibit nitrification and denitrification in soil was evaluated in a field experiment with irrigated wheat (cv. Condor) grown on a red brown earth in the Goulburn-Murray Irrigation Region. The effect of the inhibitor treatments on biomass and grain yield was determined in 25 m x 3 m plots, and the effect on recovery, in the plant-soil system, of urea-N applied at sowing was determined in 0.3 m x 0.3 m microplots using a N-15 balance technique. The inhibitor limited ammonium oxidation, prevented nitrogen loss by denitrification for 75 days, increased N accumulation by the wheat plants, increased grain N and resulted in a 46% greater recovery of applied nitrogen in the plant-soil system at harvest. However, the inhibitor treatment did not increase grain yield because of waterlogging at the end of tillering and during stem elongation.

引用

页码：1 / 11

页数：11

共 25 条

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