番茄栽培中常出现落花落果现象，有时真菌性病害和病毒病也能引起落花落果；但早春或高温季节栽培番茄，落花落果现象发生普遍而且严重，有时第一穗花果可能全部脱落，第二穗花果大部分脱落。后者属于番茄生理性落花落果。 　　番茄生理性落花落果产生的原因是由于番茄在生长分 In the cultivation of tomato, there often appear the phenomenon of falling flowers and falling fruit. In some cases, the fungal diseases and virus diseases can also cause the fall and fall of fruits and pests. However, the cultivation of tomatoes in early spring or high temperature season is common and serious, and sometimes the first flower may fall off. Most fall off. The latter belongs to tomato physiological drop flowers. Tomato Physiological fall drop fruit is due to the growth of tomatoes in the points