不同种类肥料单配施对连作花生生长发育的影响

Effect of Single and Combined Application of Fertilizers in Different Kinds on Growth and Development of Continuous Cropping Peanut

花生两年连作肥料试验中,有机肥、无机肥混合施用效果最好,对花生群体干物质积累速率、荚果干物质积累速率、总生物产量、荚果产量、叶面积系数(LAI)和光合势的影响较大,多与对照差异显著。单施无机肥处理,短期肥效明显,连年施用不理想,而单施有机肥处理长期肥效累积效应明显。花生净同化率受施肥方式影响较小,各处理间差异不明显。综合来看,有机肥、无机肥混合施用是促进连作花生生长发育的最佳施肥模式。

A two-year fertilizer experiment was conducted in a peanut field of continuous cropping.A-mong which,the organic-inorganic combination treatment had the best influences on dry matter cumulative rate of peanut population and pods,total biomass and pod yield,leaf area index and leaf area duration,and most of the growing indexes were significantly higher than those of control.Single application of inorganic fer-tilizer had better effects on peanut in short term,but worse effects in long term.Single application of organic fertilizer had a long-term cumulative effect.Net assimilation rate was less affected by fertilizer treatments, and no obvious difference was found among different treatments.In conclusion,organic-inorganic combina-tion is the best fertilization model for promoting peanut growth and development in continuous cropping field.