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草原毛虫是我省破坏草场、影响畜牧业发展的主要害虫。多年来,采用六六六粉防治,取得了不少成绩。但由于成本高,一些地区已停止使用。为进一步探索高效、低毒、价廉的新药物,我所从1969年至1972年在玉树藏族自治州等地进行了防治草原毛虫的试验研究,农用敌百虫杀虫效果均在90％以上。喷粉:用含量85％的农用敌百虫(结晶)加入陶土,制成含量6％的敌百虫粉,进行喷粉。喷雾:用含量90％的农用敌百虫(结晶)兑水稀释,进行喷雾,每亩用原药约1—2两。用农用敌百虫防治草原毛虫有以下优点: (一)效果好;喷雾平均杀虫率为94.2％,喷粉平均杀虫率为90.18％。
Prairie caterpillars is the destruction of pastures in our province, affecting the development of animal husbandry, the main pests. Over the years, the use of six six six powder prevention and control, has made many achievements. However, some regions have been discontinued due to high costs. To further explore efficient, low toxicity, cheap new drugs, I from 1969 to 1972 in Yushu Tibetan Autonomous Prefecture and other places to carry out prevention and control of grassland caterpillar experiments, agricultural trichlorfon insecticidal effect of more than 90%. Dusting: 85% of agricultural trichlorfon (crystal) added to clay, made of content of 6% trichlorfon powder, for dusting. Spray: With the content of 90% of agricultural trichlorfon (crystal) diluted with water, spray, the original drug per acre with about 1-2 two. The use of agricultural trichlorfon to control prairie caterpillars has the following advantages: (a) the effect is good; the average pesticidal spray rate was 94.2%, the average pesticide spray rate was 90.18%.