期刊论文

中文

植物营养与肥料学报

1008-505X

2007

13

3

430-435

10.3321/j.issn:1008-505X.2007.03.013

国家重大基础研究前期研究专项子专题“稻田生态系统健康与退化突变机制研究（2003CCB00300）”资助；

本校为第一机构

湖南省进行了18年土壤肥力与施肥效益监测的长期定位试验，就3个定位点不同施肥制度对稻田土壤微生物的影响进行了研究。结果表明，长期施肥土壤的有机质含量与细菌总数及放线菌总数之间无直接相关，土壤有机质含量的高低并不能作为评价土壤微生物多少的指标；真菌数量可反映土壤的肥力水平，土壤真菌数量可用来评价不同施肥制度的效果。施用30％有机肥和习惯施肥处理的氮素养分和硝化细菌数量较多，硝化细菌数量与有机质含量也无相关；长期施用大量有机肥（60％）的土壤反硝化细菌数量高于其它施肥处理，这可能与长期使用大量有机肥后土壤氧化还原电位降低有关。硫化细菌和反硫化细菌数量与土壤...

The effects of different fertilization systems on the microbes were studied with an 18 year long-term fix position experiment. The soil samples were collected from three sites in Hunan province. The results showed that the organic matter content was not directly correlated to the numbers of bacteria and actinomycetes and could not be used as the indicator for the soil microbes. The quantities of fungi could be used as the indicator for soil fertility based on this study. The nitrogen concentration and nitrifying bacteria in the soils treated with 30% organic matter or traditional fertilization...