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番茄是我国北方各省冬季主要的蔬菜之一,随着市场需求量的不断增加,目前辽宁省保护地番茄栽培面积已达2000余万亩。由于北方保护地番茄生产中常受低温、弱光等因素的影响,而发生大量的落花落果现象,当前生产上主要应用生长素类2,4-二氯苯氧乙酸(2,4-D)和防落素(PCPA)蘸花处理。但是,用2,4-D蘸花常常发生畸形果,且由于2,4-D存在残毒,不符合绿色环保要求。用防落素蘸花,果实膨大速度较慢,且蘸花劳动强度大,耗肘费工,效率不高,影响了番茄产量和经济效益的提高。
Tomatoes are one of the major winter vegetables in northern provinces of our country. With the increasing market demand, the area of tomato cultivation in Liaoning protected areas has reached over 2,000,000 mu. Due to the influence of low temperature and low light on tomato production in northern protected areas, a large number of flowers and deciduous fruits occur. The current production mainly uses 2,4-dichlorophenoxyacetic acid (2,4-D) and Anti-PCPA dipping treatment. However, malformations often occur with 2,4-D dipping flowers, and because of the presence of residual toxicity of 2,4-D, it is not in compliance with the requirements of environmental protection. Dipping with anti-drop-flower, the fruit swollen slower, and dipping flowers labor-intensive, labor-consuming elbow, inefficient, affecting the tomato yield and economic benefits.