番茄在不良环境(低温阴雨或高温干旱)条件下,会大量落花。合理应用植物激索不仅能有效地防止番茄落花落果,增加早期产量和总产量,而且能促进早熟,改善品质,提高经济效益。 防止番茄落花的植物激素主要有2,4—D和防落素。2,4—D常用于浸花处理,使用浓度在早春气温低时为15— Tomato in adverse environment (low temperature, rainy or hot and dry conditions), a lot of falling flowers. Reasonable application of plant stress can not only effectively prevent the fall and fall of tomato, increase early yield and total yield, but also promote early maturity, improve quality and increase economic benefits. Plant hormones to prevent tomato falling flowers are mainly 2,4-D and anti-down factors. 2,4-D commonly used in immersion treatment, the use of low concentrations in early spring when the temperature is 15-