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枣树是我国大面积栽培的经济果树,国内凡有枣树栽培的地区,几乎都有枣疯病发生。山东省黄河以南地区70年代即发生严重,80年代黄河以北地区也已普遍发生。一般发病率达10～30％,严重的地区已有70～
Jujube is a large-scale economic cultivation of fruit trees in China, where there are jujube cultivation areas, almost all occurrence of jujube mad. The area south of the Yellow River in Shandong Province was seriously affected in the 1970s, and the area north of the Yellow River in the 1980s has also been widespread. The general incidence of 10 to 30%, severe areas have been 70 ~