黑底潮砂泥土土壤养分动态变化及施肥效果

Dynamic Change of Nutrition and Fertilization Effect in Meadow Cinnamon Soil

以褐土类潮褐土亚类潮垆土土属黑底潮砂泥土土种为研究对象,探讨长期定点不施肥对土壤养分含量及作物产量的影响。结果表明,长期不施肥对土壤有机质、全氮、碱解氮、有效磷、速效钾都有明显的降低,且随年份的推后,降低的幅度越来越大;长期不施肥可使小麦、玉米大幅度减产。

This paper studied the effects of no fertilization on soil nutrients and crop yield in meadow cinnamon soil in Tangyin County. The result of long-term location test showed that without fertilization the content of soil nutrients declined obviously such as organic matter, total nitrogen, alkalytic N, available P and available K. And as time went on, it declined at more degree. In response to these, the yield of wheat and corn was reduced badly.