文献类型： 外文期刊
作者： Gao, Yang 1 ; Huang, Huiyi 1 ; Zhao, Hongyi 1 ; Xia, Houqiang 1 ; Sun, Miao 1 ; Li, Zongyun 1 ; Li, Pengcheng 1 ; Zheng, Cangsong 1 ; Dong, Helin 1 ; Liu, Jingran 1 ;
作者机构： 1.Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Science, Jiangsu Normal University, Xuzhou, P.R. China
2.State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan, P.R. China
关键词： soil available phosphorus; soil enzymes; C, N and P availability; plant nutrition; fertilization; soil microorganisms
期刊名称：PLANT SOIL AND ENVIRONMENT （ 影响因子：1.799； 五年影响因子：2.169 ）
ISSN： 1214-1178
年卷期： 2019 年 65 卷 7 期
页码：
收录情况： SCI
摘要： Pot experiments were conducted in 2017 with two cotton cultivars (CCRI 79 and LMY 28) and three phosphorus (P) levels: 3, 8 and 12 mg P2O5/kg as P-0, P-1 and P-2, respectively. In this study, the soil water-soluble organic carbon content increased as the soil available P (AP) increased, while there were no significant variations for soil total organic matter content among the three AP levels. The activities of invertase, cellulase and urease in cotton soil decreased significantly in the P-0. There were positive correlations between invertase and cellulose activities with soil organic carbon and inorganic-nitrogen (N); these correlated negatively with soil C/N ratio and AP level. In addition, high soil AP can raise soil AP and enhance alkaline phosphatase activity, which had a significant negative relationship with the soil C/P ratio. Urease activity had a significant positive relationship with soil NH4+-N, C/P and N/P, as well as a negative correlation with soil C/N. Moreover, soil NH4+-N and NO3--N in the P-1 and P-2 were lower than in the P-0, which might be an effect of high AP on soil N availability.
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