Dicyandiamide enhances liming potential of two legume materials when incubated with an acid Ultisol

被引:39
作者
Mao, Jia [1 ,2 ]
Xu, Ren-Kou [1 ]
Li, Jiu-yu [1 ]
Li, Xing-hui [2 ]
机构
[1] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing, Peoples R China
[2] Nanjing Agr Univ, Inst Tea Sci, Nanjing 210095, Peoples R China
基金
中国国家自然科学基金;
关键词
Acid soil; Amendment; Dicyandiamide; Legume material; Nitrification; Soil pH; SOIL-PH CHANGES; PLANT SHOOT MATERIALS; ASH ALKALINITY; WHEAT; DECOMPOSITION; PRODUCTS; DCD;
D O I
10.1016/j.soilbio.2010.05.006
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
The incorporation of two legume materials increased soil pH, while the nitrification of the ammonium nitrogen (N) from the ammonification of organic N weakened the liming potential of these materials at the later stages of incubation experiments. The addition of dicyandiamide (DCD) enhanced the liming potential of the two legume materials through its inhibition of nitrification of ammonium-N. At the end of the 60-d incubation, soil pH of the treatment using Chinese milk vetch shoots with DCD was 1.48 units higher than that of control and 1.16 units higher than of the treatment using only Chinese milk vetch. The corresponding data for the pea straw were 1.24 and 1.01 units higher, respectively. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1632 / 1635
页数:4
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