二化螟是我省重要害虫之一。为了寻找新的防治途径和措施,西北农学院植保系75、76级学生于1975、76年进行试验观察,取得了一定的效果。1977年我们在周至县马召公社马村大队对二化螟性引诱剂的有关方面继续研究。现将初步结果整理如下:一、试验材料和方法1.虫源:越冬代试验用的成虫,采自 Chilo suppressalis is one of the important pests in our province. In order to find new ways and measures for prevention and control, 75th and 76th students of Plant Protection Department of Northwest Agricultural College experimented in 1975 and 76 years and achieved some results. In 1977, we went on to study the relevant aspects of the sexual attraction of the rice stem borers Chilo suppressalis in Mackaruma, a commune of Muzha Town, Zhouzhi County. Preliminary results are now organized as follows: First, the test materials and methods 1 source: overwintering on behalf of the test adults, taken from