不同施肥制度对玉米生育期土壤微生物量的影响

Effect of different fertilizer application strategies on soil microbial biomass during corn growth periods

摘要: 通过测定不同施肥制度下玉米土壤微生物量碳、氮的动态变化，探讨了不同施肥制度对玉米土壤的培肥效应。研究结果表明，与无肥、单施有机肥、单施化肥相比，有机肥与N、P、K肥配合施用能显著增加玉米各生育时期的土壤微生物量碳、氮，促进土壤微生物量显著增长，增强了土壤养分容量的供应强度，有利于培肥土壤。

Abstract: The nutrient role of different fertilizer application strategies was assessed by measuring C and N dynamics of soil microbial biomass in corn fields.Compared with zero-fertilizer,only organic fertilizer,or chemical fertilizer applications, compound organic and chemical NPK fertilizer applications greatly enhance soil microbial biomass in the whole corn growth period,increase the supply of soil nutrient and benefit soil fertility buildup.