论文部分内容阅读
为寻找防治稻纵卷叶螟的高效、长效药种,笔者进行了甲维·毒粉剂对稻纵卷叶螟的小区防效试验和大区示范试验,结果表明,小区试验中,甲维·毒对二、三代稻纵卷叶螟低龄幼虫的防效一般,杀虫效果为65%～70%;对四代稻纵卷叶螟低龄幼虫的防效较为理想,每667m2用20%甲维·毒WP80、100g的杀虫效果为85.51%和91.45%。大区示范中,甲维·毒对四代稻纵卷叶螟保苗、杀虫效果分别达94.03%和96.06%,该药剂在实际生产上有良好的推广应用前景。
In order to find out the effective and long-acting drug for the prevention and control of rice leaf roller, the author carried out the cell prevention and control experiment and the demonstration experiment of large area for the rice leaf roller of Chuan-tao toxic powder. The results showed that in the plot test, · The control effect on the young larvae of the second and third generations of rice leafroller is insecticidal and the insecticidal effect is 65% ~ 70%. The control effect on the young larvae of the fourth generation of rice leafroller is ideal, with 20% per 667m 2 Vitamin · WP80, 100g insecticidal effect of 85.51% and 91.45%. In the demonstration area of the large area, the effect of preserving the seedlings and insecticidal effects of the four-generation rice leafroller in the four-generation control group reached 94.03% and 96.06%, respectively. The medicament has a good prospect of popularization and application in actual production.