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嘧啶氧磷学名O、O——二乙基——(2——甲氧基——4甲基——嘧啶基——6)硫逐磷酸脂。系江西省农药厂试制的新农药。为了测定它对稻飞虱的防治效果,并为大面积推广使用提供依据。笔者在稻飞虱重发生区的宜春市下浦公社进行了药效试验。一、试验过程1982年9月下旬在稻飞虱大发生时,用50％嘧啶氧磷乳油分每亩1、2、3两三种不同用量,并以50％敌敌畏乳油每亩3两和喷清水作对照。试验小区面积为0.1亩,两次重复。小区之间开沟作埂,施前取药样50蔸调查虫口基数。9月24日施药,每小区所用农药均加水20斤稀释,粗水喷雾。施药后第1和第3天在处理区内检查虫口减少率。
Pyrimidine oxygen Scientific name O, O - diethyl - (2 - methoxy - 4 methyl - pyrimidinyl - 6) phosphorothioate. Pesticide factory in Jiangxi Province trial of new pesticides. In order to determine its effect on the control of planthoppers, and provide a basis for promoting the use of large areas. The author carried out the efficacy test in Xiapu Pu commune of Yichun City in the area where the rice planthopper reoccurred. First, the test process In late September 1982 in the large planthopper occurred, with 50% pyrimidine phosphoric acid sub-points 1, 2, 3, two or three different doses, and 50% dichlorvos EC 3 per acre and spray Water as a control. Experimental plot area of 0.1 acres, twice repeated. Ditches between plots for the village, Shi Qian drug samples taken 50 虫 investigation of insect population base. September 24 pesticide application, each district pesticides are added 20 pounds of diluted water, crude water spray. On the 1st and 3rd days after the application, the rate of reduction of the population in the treatment area was examined.