针对我省蚕豆生产上普遍存在的以“花而不实”为主要特征的一种蚕豆病态现象，我们进行了研究，结果证明它是由于土壤有效而缺乏而导致的一种蚕豆生理性缺硼症。一般每亩损失蚕豆历．4～241．3公斤，严重者几乎造成绝产。一、蚕豆缺硼症状的识别发病早的于开花期出现症状，发病 Aiming at the prevalence of vicia faba with the main characteristic of “flower not true” in our province, we conducted a study and found that it is a kind of physiological boron deficiency due to the lack of effective soil disease. General loss of beans per acre calendar. 4 ~ 241.3 kg, in serious cases almost caused by the absolute. First, the symptoms of broad bean boron deficiency Early onset of symptoms and onset of flowering