氧化乐果是一种广谱、内吸、高效低残毒的杀虫杀螨剂,经在京郊大面积试验示范,证明它是防治麦蚜和稻飞虱的良好药剂。为了达到省工、省药、高效的目的,我们研制了255氧化乐果超低容量制剂(以下简称油剂),并作了如下的试验。一、药害试验为保证供试作物不受药害,进行了小面积的药害试验。试验用东方红—18型机动超低量喷雾器,在水稻苗期、油菜开花期,小麦抽穗期,分别以流量120毫升/分的剂量喷布于作物上,重复 Omethoate is a broad-spectrum, internal absorption, high efficiency and low residual insecticidal acaricide, the large-scale demonstration in the suburbs of Beijing proved it is a good agent against wheat aphid and planthoppers. In order to achieve labor-saving, drug-saving and efficient purposes, we developed 255 omethoate low-volume formulations (hereinafter referred to as oil), and made the following test. First, the phytotoxicity test In order to ensure the test crop from phytotoxicity, conducted a small area of ​​the phytotoxicity test. Experimental Dongfanghong -18 mobile ultra-low volume sprayers, rice seedling stage, flowering rapeseed, wheat heading stage, respectively, at a flow rate of 120 ml / min sprayed on the crop dose, repeat