文献类型： 外文期刊
第一作者： Meng, F.
作者： Meng, F.;Lu, C.;Yu, W.;Zhu, P.;Mueller, C.;Mueller, C.
作者机构：
期刊名称：EUROPEAN JOURNAL OF SOIL SCIENCE （ 影响因子：4.949； 五年影响因子：4.626 ）
ISSN： 1351-0754
年卷期： 2018 年 69 卷 6 期
页码：
收录情况： SCI
摘要： The effects of partial substitution of synthetic fertilizer N (NPK) with equal quantities of maize (Zea mays L.) stover N (50 kg ha(-1), NPKS) or cattle manure N (115 N kg ha(-1), NPKM) were investigated after 23 years with respect to maize yield, biomass N uptake, residual soil N and gross soil N dynamics in a fertile Chernozem soil. Maize yields were not different among these three treatments: maize biomass N uptake followed the order NPKM approximate to NPK > NPKS, whereas total N in soil was significantly larger under NPKM. A N-15 tracing method was used to explain differences in gross N dynamics of labile and recalcitrant organic N pools and total N in soil. The results showed that NPKS and NPKM compared with NPK increased gross N mineralization by 2.8 and 1.3 times, respectively. The NPKS decreased the gross rate of N nitrification by 14%, whereas NPKM increased it by 47% compared with NPK. The NPKS stimulated microbial competition for NH4+, whereas NPKM increased NO3- immobilization compared with NPK. Our results suggested that acceleration of the soil N cycle under NPKS provided the most likely reason for the small total N stock in soil. In contrast, large organic N input and considerable immobilization of NO3- to a recalcitrant pool was probably the reason for the large total N stock under NPKM.
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