摘要
利用定位研究方法,在浙江省渗育水稻土上,比较了不同的施肥模式下对稻田土壤肥力演变规律的影响。结果表明,稻田不均衡养分管理对土壤养分演变具有突出的影响,配施有机肥不仅使土壤养分积累明显,同时也具平衡土壤酸碱度的作用。主成分分析表明,从施肥对作物产量和土壤肥力的综合影响,以MNPK处理为最优,此项分析结果与方差分析结果相互印证,结果完全一致。
This paper studied fertility evolution of the paddy soil in a long-term fertilizer experiment. The results showed that fertilizer management affected soil fertility greatly. Combined application of chemical fertilizer and organic manure not only obviously increased nutrients accumulation in the soil, but also had acid-base equilibrium effect. Principal component analysis showed that combined application of chemical fertilizer and organic manure is the best treatment in all the fertilization treatments according to effects of fertilization on crop yield and soil fertility. The result was consistent with the finding of variance analysis.
出处
《浙江农业学报》
CSCD
2008年第5期353-357,共5页
Acta Agriculturae Zhejiangensis
基金
基础研究重大项目前期研究专项(2001CCB00800)
科研院所社会公益研究专项资金项目(20001732001DIA10004)
关键词
长期肥料定位试验
土壤肥力
主成分分析
long-term fertilizer experiment
soil fertility
principal component analysis
