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.
出处
《土壤》
CAS
CSCD
北大核心
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
关键词
有机物料
有机磷组分
矿化进程
Organic materials, Organic phosphorus fractions, Mineralization process
作者简介
赵晶晶（1981-）。女，辽宁盘锦人，硕士研究生，主要从事养分资源再利用方面的研究。E-mail：helen8935@126．com
通讯作者（chenxin@iae．ac．cn）
