不同耕作对白浆土有机质及其品质的影响  

Effect of Different Culture Method on Organic Matters and Their Qualities in Albic Soil

作　　者：田秀平[1] 蒋宏玥[1] 姬景红[2] 韩晓日[2] 

机构地区：[1]天津农学院,天津300384 [2]沈阳农业大学,沈阳110161

出　　处：《天津农学院学报》2005年第3期18-21,共4页Journal of Tianjin Agricultural University

基　　金：黑龙江省教委资助项目"白浆土利用改良长期综合试验研究"(9541068)

摘　　要：采用长期定位研究方法,探讨了不同耕作处理对白浆土有机质及其品质的影响。结果表明,长期采用免耕处理有利于白浆土有机质的积累,并以增加稳结态和紧结态腐殖质含量为主,松/紧比值下降较大,Kos值增加;长期采用深松和普翻处理土壤中,有机质含量下降,但Kos值增加幅度小于免耕,松/紧比值增加;不同耕法对土壤FA、HA及HA/FA比值影响较小。By using the method of long term stationary experiment, the effects of different culture on organic matters and their qualities in albic soil were studied. The results show that long-term non-tillage was more beneficial to accumulate organic matters in the albic soil, and increased mainly stable and tight combining humus, but loose/tight value descended more, and Kos value increased. In long-term ploughing and subsoiling treatments, the organic matter contents in the soil decreased, the loose/tight value increased, and their increase range of KOS value was lower than that of non-tillage. Also, different culure had little effect on FA, HA and HA/FA value.

关 键 词：不同耕作 白浆土 有机质数量和品质 

分 类 号：S153.621[农业科学—土壤学]