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象甲是甜菜苗期主要害虫之一,在各甜菜栽培区均有发生和为害,尤其在我国华北、西北、东北地区尤为严重,大发生时,将甜菜子叶和真叶全部吃掉造成大片缺苗,甚至毁种。种类主要有甜菜象甲和灰象甲。我们于1983—1985年进行了甲基硫环磷拌种防治甜菜象甲的试验研究。试验在河北省坝上高寒区的张北县小二台乡和康保县道尹地乡进行。供试农药为山东省新汶县东都农药厂生产的35％甲基硫环磷乳油。供试甜菜品种为工农三号、甜研二号和双2—37。甲基硫环磷的浓度是按种子:水:药为100:100:2;“3911”为100:100:1;
Xiang beetle is one of the main pests in the beet seedling stage, occurring and damaging in the beet cultivation area, especially in North China, Northwest China and Northeast China, especially in the big occurrence, it will eaten all the beet seeds and true leaves Miao, or even destroyed species. The main types of sugar beetle and ash weevil. In 1983-1985, we conducted a pilot study on the prevention and control of sugar beet weevils by methylthiophene-phosphorous seed dressing. The experiment was carried out in Xiaoxitai Township, Zhangbei County, and Yinxiang Township, Kangbao County, in the barren alpine region of Hebei Province. Test pesticides for Shandong Province, Xinhua County, East are pesticide plant production of methyl phosphorothioate 35% EC. Beet varieties for the test workers and peasants for three, sweet study two and double 2-37. The concentration of methylthiophos is 100: 100: 2 for seed: water: drug; 100: 100: 1 for “3911”