防止棚室番茄低温落花,除采用培育壮苗,改善栽培环境,加强温度管理等措施外,有条件的还可采用生长剂处理法。生产上常用的激素有2.4—D和防落素(番茄灵)两种,其应用方法是: 1.先把1克2.4-D粉剂溶于4～5毫升酒精中,再加入温水至1000毫升,配成1000ppm的原液。使用时,根据 To prevent low-temperature shedding tomato studio, in addition to nurturing strong seedlings, improve the cultivation environment, strengthen the temperature management and other measures, the conditions can also use growth agent treatment. The production of hormones are 2.4-D and anti-down factors (tomato Ling) two, its application is: 1. First, 1 gram 2.4-D powder dissolved in 4 to 5 ml of alcohol, then add warm water to 1000 ml , Dubbed 1000ppm stock solution. When used according to