不同稻作制、有机肥量及地下水位对红壤性水稻土有机磷组分的影响  

Effects of Rice-Based Cropping System, Applying Rate of Organic Manure and Ground Water Level on Organic Phosphorus Fractions of Paddy Soil Derived from Quarternary Red Caly

作　　者：冯跃华[1,2] 张杨珠[2] 黄运湘[2] 

机构地区：[1]贵州大学农学院,贵州贵阳550025 [2]湖南农业大学资源环境学院,湖南长沙410128

出　　处：《土壤通报》2010年第4期788-792,共5页Chinese Journal of Soil Science

基　　金：贵州省科学技术基金项目(黔科合J字(2007)2069);贵州大学人才引进科研基金项目

摘　　要：在长期定位试验条件下,研究了稻作制,有机肥用量及地下水位对红壤性水稻土有机磷组分的影响。结果表明,不同稻作制间,土壤有机磷总量以稻-稻-冬绿最高,稻-稻-冬油次之,稻-稻-冬泡最低;不同施肥水平之间,高量有机肥处理的有机磷高于常量有机肥和化肥处理;高地下水位有利于土壤有机磷的累积。土壤有机磷各形态中,活性有机磷和中活性有机磷随着年际的变化逐渐增加,并且冬泡处理的活性有机磷,中活性有机磷和中稳性有机磷在三种稻作制中最低,施用高量有机肥有利于活性有机磷和中稳性有机磷的累积。A long-term located experiment was carried out to study the effect of rice-based cropping system,organic manure and ground water level on organic phosphorus fractions of paddy soil derived from quarternary red clay.Among 3 rice-based cropping systems,total organic phosphorus content in the treatment of rice-rice-green manure were the highest,those in the treatment of rice-rice-rape came the second,those in the treatment of rice-rice flooded fallow in winter were the lowest.Among 3 applications of organic manure,the soil organic phosphorus content in the treatment with high rate of manure were higher than those in the treatment of normal rate of manure,and those in the treatment of inorganic fertilizer were the lowest.Higher ground water level could increase the organic phosphorus contents in soil.The LOP and MROP contents increased obviously,and among 3 rice-based cropping systems the LOP,MLOP and MROP contents in the treatment of rice-rice flooded fallow in winter were the lowest.High rate of manure could increase the LOP and MLOP contents.

关 键 词：稻作制 有机肥 地下水位 红壤性水稻土 有机磷组分 

分 类 号：S153.2[农业科学—土壤学]