一、病害的识别 1、油莱白锈病:叶片受害时,先在叶片正 面出现淡绿色的小点,以后扩大为近圆形的 病斑,并在病斑叶背长出稍隆起的白色有光 泽的脓疱状病班,病斑破裂后散出白色粉末 (这是病菌的孢子囊梗),严重时引起叶片枯 黄。幼茎和花轴受害后,肿大弯曲呈“龙头”状,上面着生白色癌斑。病荚多不能结实成呈 秕粒。 First, the identification of disease 1, Lai Lai white rust: leaf damage, first in front of the leaves appear pale green dots, later expanded to nearly circular lesions, and in the lesion leaves grow a slightly raised white Luster pus-like disease class, after the rupture of white spots scattered powder (which is the germ of the sporangia), causing severe yellow leaves. Young stems and flower axis damage, the swelling was “faucet-shaped”, with white oncological spots. Disease pods and more can not become solid grain tablets.