| 石灰氮对土壤中尿素转化的影响 |
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| 作者姓名： | HE Nian-Zi YU Shen YE Zhi-Qian OUYANG Hang XIONG Jin-Shan |
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| 作者单位： | [1]DepartmentofLandScienceandAppliedChemistry,ZhejiangAgriculturalUniversity,Hangzhou310029,China [2]Instit,ZhejiangAgriculturalUniversity,Hangzhou310029,China |
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| 摘 要： | Laboratory incubation experiment was conducted to study the effect of lime nitrogen(LN) on transfor-mation of urea-N in three paddy soils.The results showed that LN had an inhibitory effect on urease activity in these soils especially in the first 5 days.and that in the first 20 days of incubation,the amount of NH4^ -N derived from urea was lower in the soil with LN than in the soil without LN,While after 30 days the amount of NH4^ -N was higher in the mature haplic paddy soil developed on Quaternary red clay (MHPS)with LN than that in the soil without LN.The amount of NH3-N volatilized was decreased in the earlier stage and increased in the later stage of incubation in the MHPS by the addition of LN.
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| 关 键 词： | 石灰氮 硝化抑制 尿素酶活性 土壤 尿素转化 |
Effect of lime nitrogen on the transformation of urea in soils |
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| HE Nian-Zi,YU Shen,YE Zhi-Qian,OUYANG Hang,XIONG Jin-Shan.Effect of lime nitrogen on the transformation of urea in soils[J].Pedosphere,1995,5(3):221-227. |
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| Authors: | HE Nian-Zi YU Shen YE Zhi-Qian OUYANG Hang and XIONG Jin-Shan |
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| Institution: | [1]DepartmentofLandScienceandAppliedChemistry,ZhejiangAgriculturalUniversity,Hangzhou310029,China [2]Instit,ZhejiangAgriculturalUniversity,Hangzhou310029,China |
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| Abstract: | Laboratory incubation experiment was conducted to study the effect of lime nitrogen(LN) on transfor-mation of urea-N in three paddy soils.The results showed that LN had an inhibitory effect on urease activity in these soils especially in the first 5 days.and that in the first 20 days of incubation,the amount of NH4^ -N derived from urea was lower in the soil with LN than in the soil without LN,While after 30 days the amount of NH4^ -N was higher in the mature haplic paddy soil developed on Quaternary red clay (MHPS)with LN than that in the soil without LN.The amount of NH3-N volatilized was decreased in the earlier stage and increased in the later stage of incubation in the MHPS by the addition of LN. |
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| Keywords: | lime nitrogen nitrification inhibitor ureai urease activityi urease inhibitor |
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