长期施用单一肥料对土壤质量的影响

Effects of Long-term Application of Single Fertilizer on Soil Quality

[目的]研究长期施用单一肥料对无石灰性土壤质量的影响。[方法]在田间长期定位试验中采取土样分析,研究土壤物理、化学、生物学性质指标对长期施用单一肥料的响应。[结果]与对照相比,长期单施有机肥可显著改善土壤的含水量、孔隙度、电导率、阳离子交换量、过氧化氢酶活性,提高土壤养分含量,且施用高量有机肥用,效果更明显;但长期单施氮肥的效果与对照相比差异不显著。[结论]长期合理施用有机肥不仅能改善土壤物理性质,在提高土壤化学和生物学性质方面也明显优于单施氮肥。因此,充分利用农业生产中的有机物料,合理配施化肥能有效培肥土壤,改善土壤质量,是实现农业可持续发展的有效途径。

[ Objective ] The study aimed to research the effect of long-term application of single fertilizer on non-caleareous fluro-aquic soil quality. [ Method] A field experiment was conducted to investigate effects of long-term located application of single fertilizer on physiea, chemical, biological properties of the soil. [ Result ] Compared with the check, soil water holding capacity, porosity, EC, CEC, eatalase activity, nutrient content were significantly improved by long-term application of single organic fertilize, and the effect was more obvious with application of high organic fertilizer. But the soil quality was not markedly improved by long-term application of single nitrogen fertilizer as compared with the check. [ Conclusion] Long-term application of organic fertilizer could not only improve soil physical properties, hut also improve soil chemical and biological properties as compared with application of nitregon fertilizer. So it was held that long-term reasonable application of single organic fertilizer was an approach to further improving soil quality and promoting the development of continuable agriculture.