保水剂对苗期番茄根际土壤微生物数量及土壤酶活性的影响  

Effects of Super Absorbent Polyers on Soil Microbe Amounts and Enzyme Activities of Rhizosphere in Tomato Seedling

作　　者：崔娜[1,2] 张玉龙[1] 曲波[2] 白丽萍[2] 杨红[3] 

机构地区：[1]辽宁省农业资源与环境重点实验室沈阳农业大学土地与环境学院,辽宁沈阳110161 [2]沈阳农业大学生物科学技术学院,辽宁沈阳110161 [3]沈阳农业大学植物保护学院,辽宁沈阳110161

出　　处：《北方园艺》2010年第23期24-26,共3页Northern Horticulture

基　　金：国家支撑计划资助项目(2006BAD29B06);辽宁省教育厅科学技术研究资助项目(2008623);沈阳农业大学博士后基金资助项目(62658)

摘　　要：以普通栽培型番茄"辽园多丽"为试材,采用不同粒径保水剂进行土壤拌施,研究了其对番茄幼苗根际微生物数量和土壤酶活性的影响。结果表明:不同粒径保水剂均降低了根际土壤中细菌的数量,提高了真菌的数量,大粒和中粒保水剂处理提高了放线菌的数量。不同粒径的保水剂处理均降低了过氧化氢酶的活性,提高了蔗糖转化酶的活性;中粒和粉末状的保水剂处理提高了蛋白酶的活性;大粒和中粒保水剂提高了多酚氧化酶活性;中粒保水剂处理提高了脲酶的活性。Tomato cv. ＂Liaoyuanduoli＂ was cultivated in order to study the effects on soil microbe amounts and enzyme activities of rhizosphere in tomato seedling by super absorbent polyers（SAP） with different granularity. The results showed that the soil bacteria amounts of rhizosphere were decreased by super absorbent polyers with different granularity, while fungus were increased. Actinomyces amounts were raised by the slightly larger particle size and medium granularity of SAP. Catalase activities were reduced by SAP with different granularity, meanwhile saccharase activities were enhanced. Protease activities were increased by medium granularity and powder of SAP. Polyphenoloxidase activities were enhanced by the slightly larger particle size and medium granularity of SAP. Urease activities were only increased by medium granularity of SAP.

关 键 词：保水剂 根际 土壤微生物 土壤酶 

分 类 号：S641.2[农业科学—蔬菜学]