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近年来,晋北地区向日葵苗期害虫发生严重,常造成大面积缺苗断垄,甚至毁种。以往生产上主要采取666拌种、3911闷种的防治措施,鉴于666高残毒禁用,3911剧毒不安全,我们选用新型有机磷内吸杀虫剂—甲基硫环磷进行了防治试验,现将结果报道如下。一、材料与方法供试品种为三道眉,药剂为35％甲基硫环磷乳油(山东淄博农药厂产品)和75％甲拌磷乳油(天津农药厂产品)。试验采用药液闷种的方法,共设5个处理:①甲基硫环磷1:30:100(药:水:种)闷种;②甲基硫环磷2:30:100闷种;③甲基硫环磷3:30:100闷种,④甲拌磷(对照药剂)1:30:100闷种;⑤清水闷种作对照。闷种4小时后播种。试验设在本所檀村农场。田间
In recent years, sunflower seedlings pests in the northern region of Shanxi serious, often resulting in a large area lack of seedlings broken ridge, or even destroyed species. In the past, 666 seed dressing and 3911 seedling were used mainly for prevention and control measures. In view of the banned 666 high-residue residue and the insecticidal toxicity of 3911, we chose a new type of organophosphate insecticide, methylthiophene-phosphorus The results are reported below. I. Materials and Methods The tested varieties were three breeds of eyebrows. The medicament was 35% Methylthiophosphate EC (Shandong Zibo Pesticide Factory Products) and 75% Phorate EC (Tianjin Pesticide Factory Products). The experiment used the method of liquid-boring seed, a total of five treatments: ① Methylthiophos 1: 30: 100 (medicine: water: species) boring species; ② Methylthiophosphate 2: 30: 100 boring species; ③ methyl sulfur phosphorus 3: 30: 100 boring species, ④ phorate (control agent) 1: 30: 100 boring species; Sow 4 hours after sowing. The test is located in our village Tan Village farm. field