菜豆,俗称眉豆、四角眉,是常见蔬菜之一。花量很多,每一花序可着花4～15朵,但成荚率很低,一般只占开花数的20～35%。了解落花落荚原因,改进栽培技术,积极进行预防,是夺取高产的关键。一、落花落荚的原因 1.温度。温度过高或过低,直接影响花芽的分化。13℃以下或 Beans, commonly known as eyebrow beans, four eyebrow, is one of the common vegetables. A lot of flowers, each inflorescence can spend 4 to 15, but the pod rate is very low, generally only accounts for the flowering of 20 to 35%. Understand the reasons for falling flower pod, improve cultivation techniques, and actively prevent, is the key to winning high yield. First, the reasons for falling flowers pod 1. Temperature. Temperature is too high or too low, a direct impact on the differentiation of flower buds. Below 13 ℃ or