期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2006

32

4

362-367

10.3321/j.issn:1007-1032.2006.04.004

国家科技部“973”基础研究发展规划项目（2003CCB00300）；

本校为第一机构

为探明长期不同施肥结构对湖南省稻田土壤肥力的影响,通过野外调查采样和室内测定,研究了湖南省土肥站1986年冬季在全省各地建立的、持续了18年的6个土壤肥力与施肥效益监测长期定位试验点不同施肥处理对稻田土壤肥力的影响.结果表明,与不施肥处理相比,长期有机肥与无机肥配施能全面提高土壤氮、磷、钾、有机质以及CEC含量,能有效调节土壤pH.秸秆还田和施用NK肥都能显著提高土壤速效钾的含量,施用NK肥的处理比NPK肥处理平均高48.4%;秸秆还田处理比NPK肥处理平均高32.3%.施用NP肥能显著提高土壤的速效磷含量;各化肥处理的有机质含量总体上较为稳定,而施用有机肥是增加土壤有机质含量的最有效途径...

Based on 18-years long-term fertilizer experiments, characters of the N, P, K nutrient in paddy soil and rice yield were analyzed after application of different fertilizers. The results showed that： compared with the treatment without, organic manure, combined with chemical fertilizers, could increase the quantity of OM, CEC, available and total N, P, K, so it was the most remarkable of the several treatments. The nutrient content in treatment of farmers＇ fertilization practice （FFP） and NPK maintained at an identical level. Treatment NP co...