雾培对番茄根系生长及其营养吸收的影响  

Effect of aeroponics on root growth and nutrient absorption in tomato

作　　者：赵旭[1] 刘艳芝[2] 王静 李天来[4] 孙周平[4] ZHAO Xu;LIU Yanzhi;WANG Jing;LI Tianlai;SUN Zhouping(Jining Center for Popularization o f Agricultural Technique, Jining 272019, China;Jining Agricultural Science Research Institute, Jining 272009, China;Sishui Agricultural Technology Extension Station, Jining 273200, China;College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China)

机构地区：[1]济宁市农业技术推广站,山东济宁272019 [2]济宁市农业科学研究院,山东济宁272009 [3]泗水县农业技术推广站,山东济宁273200 [4]沈阳农业大学园艺学院,辽宁沈阳110866

出　　处：《浙江农业学报》2017年第5期767-772,共6页Acta Agriculturae Zhejiangensis

基　　金：济宁市科技发展计划项目

摘　　要：以辽园多丽番茄为试材,采用气雾法栽培,以珍珠岩培为对照,研究雾培对番茄生长的影响。结果表明,雾培可显著改善番茄根际气体环境,其根际O2浓度比对照提高了14.7%,而根际CO2浓度仅为对照的1/10。雾培显著促进了番茄根系的生长及营养吸收,在定植后60 d时,雾培植株的根长、根体积、根系活力和根系硝酸还原酶活性分别比对照提高了66.0%、63.0%、34.9%和30.5%。雾培番茄根系、果实中N、P、K、Ca和Mg含量显著高于对照,其中根系中N、P、K、Ca和Mg含量分别是对照的1.8、1.5、1.4、1.4和1.2倍。上述结果表明,雾培主要通过显著改善根际气体环境,增加根际周围O_2含量,降低CO_2含量,促进番茄根系生长和营养吸收,增强植株营养向地上部分的转运,从而促进植株的生长和发育。Tomato plants(Lycopersicon esculentum L.cv.Liaoyuanduoli)were treated by aeroponical culture and perlite culture was used as the control.The results showed that the rhizosphere02of aeroponic tomato was14.7%higher while C02concentration was only about1/10of the control plants.Aeroponics significantly promoted the root growth and nutrient absorption of tomato.The root length,root volume,root activity and nitrate reductase activity of tomato under aeroponical culture on60days after transplanting was increased by66.0%,63.0%,34.9%and30.5%than that of the control plants.The content of N,P,K,Ca and Mg in roots and fruits of aeroponic plants was significantly higher than that of the control plants,which were1.8,1.5,1.4,1.4,and1.2times of the control plants,respectively.The results indicated that the aeroponic culture significantly improved rhizosphere gas environment through increasing02content and reducing C02content.Aeroponic culture promoted the root growth and nutrient absorption at the same time,and then enhanced plant nutrition transferring to the ground part.

关 键 词：番茄 雾培 根系生长 营养吸收 

分 类 号：S641.2[农业科学—蔬菜学]