有机物料对土壤有机磷组分及其矿化进程的影响  

Influences of Organic Materials on Organic Phosphorus Fractions and Mineralization Processes in Soils

作　　者：赵晶晶[1] 郭颖[1] 陈欣[1] 史奕[1] 韩晓日[2] 

机构地区：[1]中国科学院沈阳应用生态研究所陆地生态过程重点实验室,沈阳110016 [2]沈阳农业大学土地与环境学院,沈阳110161

出　　处：《土壤》2006年第6期740-744,共5页Soils

基　　金：国家自然科学基金重大项目(30470336)资助

摘　　要：通过300天室内恒温(30℃)好气培养实验,研究了不同C/N有机物料(水稻秸秆、玉米秸秆、牛粪、猪粪)掺入土壤后,土壤有机P及各组分含量和有机P的矿化特征。结果表明:有机物料的添加,不同程度地增加了土壤有机P含量;添加有机物料处理,有机P矿化率高于对照处理,且在培养的前30天迅速矿化。掺入有机物料处理土壤有机P各组分含量均有所增加;对照处理有机P各组分的矿化进程都比较平稳,而添加物料处理的活性和中等活性有机P则呈增加或波动状态,中稳和高稳性有机P在腐解初期出现迅速矿化。有机物料的添加,可以促进有机P各组分间的转化,提高土壤P素的有效性。Concentrations and mineralization processes of organic phosphorus （Po） fractions in soils mixed with different organic materials （straw of rice and maize, manure of cattle and pig） of different C/N were studied by aerobic incubation experiment at 30℃ for 300 d. Results showed that soil Po contents increased at different degrees after organic materials were mixed; Po mineralization rates in treatments mixed with organic materials were higher than CK, and it mineralized quicker during the first 30 d of cultivation; The contents of organic phosphorus fractions in the treatments mixed with organic materials increased; Po fractions of CK mineralized smoothly, while active Po and moderately-active Po increased or fluctuated in treatments mixed with organic materials, moderately-resistant Po and highly-resistant Po mineralized quickly at initial stages of cultivation. Application of organic materials could promote transformation between different Po fractions, thus could improve phosphorus availability in soils.

关 键 词：有机物料 有机磷组分 矿化进程 

分 类 号：S153.62[农业科学—土壤学]