高压静电场对水培番茄生理指标与产量的影响

Influence of High Voltage Electrostatic Field on Physiological Indexes and Yield of Hydroponic Tomato

为探讨高压静电场对水培番茄生理生化指标与产量的影响规律,阐明影响机理,将番茄幼苗放入平行板电极的2个极板间并施加2.00、2.25、2.50 k V/cm 3种不同强度的高压静电场8 h,然后将电场处理后的幼苗在温室采用无机基质和营养液模式培养,同时对茎粗、鲜质量、叶绿素含量、根系形态特征、生长期、膜透性、离子浓度变化和果实最终产量进行测试分析,结果表明:与不加电场的对照相比,营养液栽培高压静电场处理改变了番茄的生长特性,且强度为2.25 k V/cm的电场对茎粗、鲜质量、叶绿素含量、根系形态的促进效果最优,基质栽培中2.25 k V/cm的电场处理后产量提高了23%。

In this paper,high voltage electrostatic field（ HVEF） was applied to agricultural production.The experimental equipment of HVEF was designed. To explore the effect of HVEF on physiological characteristics and yield of hydroponic tomato,illustrate the influence mechanism of HVEF on the tomato seedlings,tomato seedlings were cultivated in greenhouse. The seedlings with two true leaves and the same height were transplanted to experimental lab and gone on the treatment of HVEF. The seedlings were cultivated in nutrient solution mode. Three different high voltage electrostatic fields of 2. 00,2. 25,2. 50 k V / cm were adjusted and the seedlings between the two parallel-electrode plates were treated under this condition for 8 h. After finishing the treatments of HVEF,some of the seedlings were continued to be cultured by using of inorganic matrix and nutrient solution culture in greenhouse. Then,the stem diameter,fresh weight,chlorophyll content and root morphological characteristics of tomato seedlings,as well as ultimate yield of tomato were studied. In addition,root activities and membrane permeability of other seedlings,and the changes of ion concentration of uptake solution as soon as HVEF treatment was finished,were analyzed. The results show that the high voltage electrostatic field,compared with the control（ without electric field）,changes the growth characteristics of tomato,and the electric field intensity of 2. 25 k V / cm increases stem diameter,fresh weight and chlorophyll content,and promotes the effect of the optimal root morphology. As a result,the yield is increased by 23% in contrast with the control.