摘要
为研究土壤水溶性有机碳在长期施肥条件下的演变特征,通过对自1988年开始的施用有机肥、化肥及有机肥化肥配施的设施蔬菜长期定位土壤水溶性有机碳(WSOC)含量进行了研究,分析土壤水溶性有机碳的含量及其剖面分布的变化。与B组(施化肥)相比,A组(有机肥及有机肥+化肥配施)水溶性有机碳的含量明显增加;0～20cm、20～40cm、40～60cm3个土层中有机肥和氮肥配施肥处理水溶性有机碳含量随着氮肥施用量的增加而减少;各处理水溶性有机碳含量在0～20cm土中最高,在3个土层中呈现高低高的趋势。长期施肥处理表明土壤水溶性有机碳在设施栽培土壤中对施肥反应较敏感施用有机肥可以提高各土层水溶性有机碳的含量。
For the study of soil water-soluble organic carbon in long-term fertilization under the conditions of the evolution of features, this study since 1988 through the beginning of the application of organic manure, chemical fertilizer and organic fertilizer chemical fertilizer facilities in vegetable soils of long-term water-soluble organic carbon （WSOC） content of conducted a study, analysis of soil water-soluble organic carbon content and changes in the distribution profile. With the B group （chemical fertilizer） than, A group （organic fertilizer and organic manure ＋ chemical fertilizer） water-soluble organic carbon content increased significantly; 0-20 cm, 20-40 cm, 40-60 cm soil layer of organic fertilizer 3 and nitrogen fertilization treatment with water-soluble organic carbon content with the increase of the amount of nitrogen fertilizer reduced; the processing water-soluble organic carbon content of 0-20 cm soil highest in three layers of high and low high-trend. Long-term fertilization treatment showed that the soil water-soluble organic carbon in the soil Cultivation fertilization is sensitive to the application of organic manure can increase the water-soluble organic carbon content of soil.
出处
《中国农学通报》
CSCD
北大核心
2010年第11期178-181,共4页
Chinese Agricultural Science Bulletin
关键词
长期施肥
水溶性有机碳
有机肥
化肥
long-term fertilization
WSOC
organic manure
chemical fertilizer
