长季节无土栽培番茄根部施用植物生长调节剂对根系活力的影响  

Effect of Plant Growth Regulator on Root Activity of Tomato in Long-term Soilless Cultivation

作　　者：蒋卫杰[1] 余宏军[1] 朱德蔚[1] 杜永臣[1] 李红[1] 史振霞[1] 

机构地区：[1]中国农业科学院蔬菜花卉研究所,北京100081

出　　处：《园艺学报》2007年第3期771-774,共4页Acta Horticulturae Sinica

基　　金：国家科技攻关项目(2004BA521B01);农业部蔬菜遗传与生理重点开放实验室项目

摘　　要：以番茄品种‘宝发008’为试材,通过无土栽培试验系统研究了2,4-D、烯效唑、水杨酸、云大-120、萘乙酸、爱多收6种植物生长调节剂(PGR)对番茄生长的作用效应。结果表明,经1500倍云大-120、5mg·kg-1萘乙酸+3000倍爱多收处理后,番茄根系的氯化三苯基四氮唑(TTC)还原强度提高到0·623和0·558mg·h-1·g-1,与对照(0·259mg·h-1·g-1)相比差异达到极显著水平,对番茄叶片净光合速率、茎秆生长量和果实产量也有影响。An experiment was conducted to study the effects of plant growth regulators （PGR） on growth of tomato Baofa 008 and their mechanism in long-term soilless cultivation in greenhouse. The plant growth regulators included 2,4-D, uniconazole （UNI）, salicylic acid （SA）, Yunda-120, NAA and compound sodium nitrophenolate （CSN）. The results indicated that tomato plant treated with Yunda-120, CSN ＋ NAA increased root activities by 0. 623 mg·h^-1·g^-1 and 0. 558 mg·h^-1·g^-1, respectively, which were significantly higher than that of the control, enhanced leaf net photosynthesis rate and plant stem growth, consequently increased tomato yield by 13.42% and 8.78%, respectively, as compared with the control.

关 键 词：番茄 植物生长调节剂 根系活力 无土栽培 

分 类 号：S641.2[农业科学—蔬菜学]