不同培肥措施对黔东几类土壤腐殖质的影响

Influence of different cultivating fertility measure on humus of several kind of soil types in Guizhou east

通过5年的定位试验，结果表明，长期有机无机肥配施或粮肥轮作、间种配施化肥均能提高黄壤土类黄泥土、红壤土类黄红泥土和潮土类潮泥土的有机质、腐殖质和活性腐殖质含量，其中胡敏酸、富里酸也相应增加，但以粮肥轮作、间种配施化肥的培肥效果最好。粮肥轮作、间种配施化肥还能提高土壤腐殖质的胡／富比值。各处理的影响不仅仅局限于土壤耕层，但以0～50cm土层的效果显著。

Through 5 years localization experiment, resoult indicated that for long- term organic inorganic fertilizer matches fertilizes grain fertility crop rotation , the interplanting matches fertilizes could enhance the yellow soil of type yellow soil, the yellow latefite soil of type red soil and moist soil of type submergie southern paddy soil organic matter, the humus and the active humus content, humic acid and furey acid also correspondingly increased, but by the grain fertility crop rotation, the interplanting matches fertilizes cultivated the fertility effect to be best. The grain fertility crop rotation, the interplanting match Hu which fertilizes also could enhance the soil H/R ratio. Each processing influence not only limited to the soil topsoil, but effect was remarkable by the 0 - 50 cm soil layer.