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双氰胺和表面活性剂添加对沼液氮素形态变化的影响.
- Source :
-
Journal of Agricultural Resources & Environment / Nongye Ziyuan yu Huanjing Xuebao . 2020, Vol. 37 Issue 6, p939-944. 6p. - Publication Year :
- 2020
-
Abstract
- The aim of the present study was to explore the effects of dicyandiamide(DCD)and surfactant on the form and content of nitro⃠gen in digested slurry, using a laboratory simulation experiment with different combinations of application of the treatments. Six treatments were used:single application of digested slurry, digested slurry+8%DCD, digested slurry+16%DCD, digested slurry+surfactant, digested slurry+8%DCD+surfactant, and digested slurry+16%DCD+sufactant. The total nitrogen(TN), total Kjeldahl nitrogen(TKN), ammonium ni⃠trogen(NH4+-N), and nitrate nitrogen(NO3--N)content of digested slurry were measured at 10, 30 min, and 1, 3, 10, 24, 48 h. The results revealed that, in the digested slurry+8%DCD and digested slurry+16%DCD treatments, the concentrations of NH4+-N, TKN, and NO3--N in⃠creased by 0.74%~8.96%, 24.67~59.70 mg·L-1, 13.42~145.88 times, respectively, and the concentrations of all three increased with the quantity of DCD. The addition of surfactant had little effect on the form and concentration of nitrogen in digested slurry. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SURFACE active agents
*NITROGEN
*NITRATES
*SLURRY
*AMMONIUM
*LABORATORIES
Subjects
Details
- Language :
- Chinese
- ISSN :
- 20956819
- Volume :
- 37
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of Agricultural Resources & Environment / Nongye Ziyuan yu Huanjing Xuebao
- Publication Type :
- Academic Journal
- Accession number :
- 147030789
- Full Text :
- https://doi.org/10.13254/j.jare.2019.0556