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1958年5月上旬,在江苏省兴化县海河、大邹等乡,发现南大2419小麦田内有不少枯心苗、枯苞(卽死孕穗)及白穗,经检查是大螟和二化螟的越冬幼虫为害所致。我们分别在海河乡钓鱼社、大邹乡双昇、新南等三个农业社检查,9块田計33.9亩,受害率达0.9—1.25％,平均为1.15％。 我们检查被害麦茎100根,共获二化螟5条、大螟37条。在此100根麦茎中,枯心苗36根:16根有虫,二化螟1条,大螟15条;20根无虫枯心苗中,二化螟
In early May 1958, in Xinghai County, Jiangsu Province, Haihe, Zou and other townships found that 2419 in Nanda 2419 wheat fields have a lot of dry seedlings, dry bract (bream dead booting) and white spike, after inspection is Sesamia and two Stem borer caused by overwintering larvae. We examined the three farming communities in Haihe Township Fishing Village, Dazou Township Shuangsheng and Xinnan Counties, respectively. There were 33.9 acres in 9 plots of land with a rate of 0.9-1.25% and an average of 1.15%. We check the victim wheat stem 100, a total of 5 Sesamia inferens, 37 borer. In the 100 wheat stems, 36 seedlings of withered seedlings: 16 insects, 1 stem borer, 15 stem borer, 20 stem borers, 2 stem borer