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一、症状识别 1.白菜病毒病 白菜各生育期均可发病,病苗心叶叶脉透明,沿脉失绿,产生浅绿与浓绿相间的斑驳,叶皱缩不平,有时叶脉不平,有时叶脉上生褐色坏死斑。成株期植株矮小,叶色呈浓绿与黄绿相间的花叶,有时在叶部形成密集的黑色小斑点,严重时不包心。种株受害抽薹缓慢而短,扭曲畸形,荚果小,子粒不饱满,严重时,花梗未抽出即死亡。
First, the symptoms identified 1. cabbage virus disease cabbage may have the disease during the growing period of disease, the seedling heart leaf veins transparent along the veins green, resulting in light green and dark green mottling, folds uneven, and sometimes uneven veins, and sometimes veins Raw brown necrotic spots. Plant into short plants, leaf color was dark green and yellow and white mosaic, sometimes in the leaves to form dense black spots, not wrapped in serious cases. Strain affected bolting slow and short, twisted deformity, pod small, grain is not full, serious, pedicel not withdrawn to death.