葡萄扇叶病与传毒媒介──标准剑线虫答山东省阳谷县读者樊祥金葡萄扇叶病又名葡萄退化病，是一种病毒性病害。葡萄标准剑线虫是该病的传毒媒介（标准剑线虫在土壤中移动特慢，每年不到１ｍ）．标准剑线虫取食有病树根几分钟即获毒，以后在其它植株取食时即呈同心圆扩散传... Grape Fan Ye disease and poison vector ─ ─ standard swordworm answer Yanggu County, Shandong Province Fan Fan gold grape leaf disease, also known as grapes degeneration disease, is a viral disease. Grape standard swordworm is the vector of transmission of the disease (standard swordworm worm moving slowly in the soil, less than 1m per year). Standard swordworm feeding sick roots a few minutes that was poisonous, after eating in other plants showed concentric diffusion ...