期刊论文

中文

中国农学通报

1000-6850

2013

29

12

109-114

10.3969/j.issn.1000-6850.2013.12.018

湖南省研究生科技创新项目“不同施肥方式和地下水位对稻田土壤氮素矿化特征及供氮能力的影响”（CX2011B312）；

本校为第一机构

　　为探明湖南省稻田土壤氮素肥力及其矿化特征，选择长沙县3种母质类型发育的3种稻作制土壤，采用Waring和Bremner淹水密闭2周培养法（改进法）研究土壤矿化氮量，并预测土壤供氮能力。结果表明，土壤全氮和碱解氮分别变化于0.60~1.50 g/kg和84.10~182.70 mg/kg，呈正态分布。土壤矿化氮量的变化范围为24.53~84.61 mg/kg，与土壤全氮和土壤碱解氮含量之间有显著和极显著的正相关关系（r=0.492*，r=0.535**）。土壤氮矿化势(N0)的变化范围为65.70~170.09 mg/kg，矿化速率常数(c)在0.0083~0.0386之间。土壤供氮量为112.51~422.10 kg/hm2，供氮率为7.07%~23.53%。3种母质类型，以花岗岩风化物发育...

In order to investigate the characteristic of N fertility and N mineralization in paddy soil of Hunan Province, waterflooded incubation two weeks (improved method) was proposed by Waring and Bremer to study the N mineralization characteristic of three rice based cropping systems paddy soil derived from three kinds of type of parent material in Changsha County, also forecasted the nitrogen supplying capacity of soil. The results showed that, total N and alkaline hydrolytic N of tested soil respectively varied from 0.60-1.50 g/k and 84.10-182.70 mg/kg, and showed normal distribution. The mineral...