杀虫单防治水稻三大害虫的试验研究

The Exeperiments on Controlling Three Main Pest Insects in Rice Field with Shachongdan

根据试验、示范及三年来大面积推广应用结果表明：杀虫单能有效防治水稻三大害虫，并且成本低，很有推广前途。用药时间宜早不宜迟，防治二化螟、稻纵卷叶螟应掌握在卵孵高峰至２龄初期用药；防治稻虱应掌握在低龄若虫高峰期用药。用药量以６６７米２用８０％杀虫单粉剂３５～４０克为宜。

The field trial and demonstration results showed that Shachongdan is effective to control three main pest insects, that is planthopper, striped rice borer and rice leaf roller.The suitable time for Shachongdan application is at peak stage of young nymphs for rice planthopper, and egg stage to 2rd instar for striped rice borer and rice leaf roller.The economically effective dosage is 525￣ 600g/ha 80% Shachongdan dust/ha.