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从1959到1962年调查了哈尔滨及附近县份大白菜发生软腐病的伤口种类、发生部位及感病机率等。四年调查结果如下:1.大白菜各部伤口种类及发病比例:根部受蛴螬、萝卜蝇幼虫、地老虎及跳(虫甲)类幼虫为害而造成的伤口和自然裂伤总数只占调查株各部各种伤口总数的3%左右。但未发现表土以下的伤口有首先发病者。茎部有自然裂伤、萝卜蝇幼虫为害伤,共占调查株各部各种伤口总数的4%以下,因此发病比例占总病栋的1.5%以下。
From 1959 to 1962 investigated the occurrence of soft rot in Chinese cabbage and nearby counties in Harbin, the type of wounds, the incidence of disease and the incidence of cabbage. The results of the four-year investigation are as follows: 1. The types and incidence of wounds in Chinese cabbages: The total number of wounds and natural laceration caused by the damage of the root beetles, the radish fly larvae, the tiger beetles and the jumping (larvae) About 3% of all wounds. But did not find the top of the wound below the first incidence. Stems have a natural laceration, radish larvae were injured, a total of 4% of the total strains of various strains surveyed strains below, so the incidence of total disease accounted for less than 1.5% of the building.