不同间作形式对玉米根际土壤酶活性的影响  

The Rhizosphere Soil Enzyme Activities of Different Corn Intercropping System

作　　者：姜莉[1] 陈源泉[1] 隋鹏[1] 栾琛[1] 张敏[1] 汪洪焦[1] 李媛媛[1] 高旺盛[1] 

机构地区：[1]中国农业大学区域农业发展研究中心,循环农业研究中心,北京100193

出　　处：《中国农学通报》2010年第9期326-330,共5页Chinese Agricultural Science Bulletin

基　　金："十一五"国家科技支撑计划"粮食主产区农田生态健康管理关键技术研究与示范"(2006BAD02A15;2007BAD89B01)

摘　　要：为了探究间作群体地下部土壤生物化学环境,采用田间试验法研究了不同间作群体玉米关键生育时期3种主要根际土壤酶活性的变化特征,结果表明:随着玉米生育时期的推进,玉米单作、玉米‖向日葵、玉米‖花生、玉米‖红薯4个处理的根际土壤脲酶、过氧化氢酶、碱性磷酸酶均在喇叭口期出现活性高峰;玉米整个生育期各处理脲酶、过氧化氢酶活性大小顺序均表现为玉米‖花生>玉米‖红薯>玉米‖向日葵>玉米单作,且在喇叭口期差异较显著(P>0.05)。玉米‖花生碱性磷酸酶活性在整个玉米生长期一直高于玉米单作,玉米‖红薯除喇叭口期外均低于玉米单作、玉米‖向日葵在喇叭口期和开花授粉期也均低于玉米单作;间作群体有明显的产量优势。因此,研究表明合理的间作可以改善土壤酶活性,提高作物产量。In order to reveal soil biochemical environment of underground in Corn intecropping system, using field experiment, the dynamic Changes in activities of three kinds of rhizosphere soil enzyme were assayed during different growth-stages of corn in different intercropping system. The results showed that as the development of the corn, the activities of rhizosphere urease, hydrodgen peroxidase and akline phosphatase peaked at bugle stage in the 4 treatments： single maize and maize intercropping with sunflower, peanut or sweet potato; During the whole life of corn, the activities of urease, hydrodgen peroxidase in the 4 treatments showed： maize｜｜ peanut〉maize ｜｜ sweet potato〉maize ｜｜sunflower〉single maize, and the difference is significant （P〉0.05） at bugle stage. The akline phosphatase activity in the maize ｜｜ peanut is higher than that in the single maize with the growth of corn, Moreover, the maize｜｜ sunflower showed the same regularity at seeding stage and maturity, but which in the maize｜｜sweet potato is lower than in the single maize, except for bugle stage; Intercropping system had significantly higher yield. The results showed that reasonable intercropping system could improve the soil enzyme activity and increase crop yield.

关 键 词：间作 土壤酶活性 产量 

分 类 号：S344.2[农业科学—作物栽培与耕作技术]