不同节水稻作模式对土壤理化特性和土壤酶活性影响研究  

Effect of Water-saving Rice Cultivation Patterns on Soil Physical and Chemical Characteristics and Soil Microbial Activity

作　　者：王波[1,2] 邓艳萍[1] 肖新[1,2] 赵言文[2] 

机构地区：[1]安徽科技学院,安徽凤阳233100 [2]南京农业大学资源环境学院,江苏南京210095

出　　处：《水土保持学报》2009年第5期219-222,共4页Journal of Soil and Water Conservation

基　　金：国家高新技术研究发展计划(2002AA2Z4331);安徽省高校省级自然科学研究计划(KJ2008B76ZC);安徽科技学院优秀引进人才基金(ZRC2008159)

摘　　要：针对南方丘陵区季节性干旱现状与目前稻田单一化的连作耕作制度对农田环境造成的不利影响因素,通过4a田间定位试验研究了节水稻作模式下土壤理化性状和土壤酶活性变化规律影响。结果表明,与该区常规稻作模式相比,在试验设计范围内,节水稻作模式下稻田的土壤理化性状明显改善,随着耕种年限增加,土壤容重下降,而孔隙度增加,土壤通透性增强,有效阻止土壤次生潜育化和土壤酸化,提高了土壤pH值;就土壤酶活性而言,节水稻作模式处理酶活性常规稻作模式相比,除转化酶外,其它酶活性均有不同程度的增加,尤其对磷酸酶与脲酶影响最大。Environment of cultivated land has been influenced unfavorably by single continuous cropping in paddy field,and seasonal drought often seriously affects rice production due to water stress.The soil physical and chemical characteristics and soil enzyme activity of water-saving rice cultivation patterns were studied in the field experiment in this paper.The results showed that,water-saving rice cultivation patterns had improved soil physical and chemical characteristics apparently.Water-saving rice cultivation patterns could not only provide water indispensable to life,but also ameliorate the condition of soil water content and ventilation.The activities of catalase,phosphatase,urease,polyphenoloxidase were higher than those of the conventional double cropping rice pattern and especially for phosphatase and urease.

关 键 词：节水稻作模式 土壤理化性状 土壤微生物活性 

分 类 号：S152[农业科学—土壤学] S153[农业科学—农业基础科学]