摘要
田间试验表明，锐劲特对水稻多种害虫具有高效、持效、安全的优点。２２－５ ～３０ｇ ａ．ｉ．／ｈｍ２ 用量对水稻褐飞虱防效９０％ ，持效期４５ 天以上，褐飞虱敏感性优于白背飞虱；２２－５ ～３０ｇ ａ．ｉ．／ｈｍ２ 用量对稻纵卷叶螟５、１０ 天平均防效分别为８７ ．５ ％ 和９５．０％ ；抓住水稻害虫低龄幼虫期，采用手动、机动弥雾或飞机喷雾的方法。
Field of experiments showed that fipronil(Regent)possessed very effective and long persistent to control against most of the rice insect pests.Effect control of 90% and persistence of 45 days can be obtained when fipronil was applied on BPH at a dosage of 22.5～30ga.i./ha.BPH(Nilapavata lugens)is more sensitive to fipronil than WBP(Sogatella furifera).The average effect of control riceleaf roller(Cnaphalocrocis medinalis)achieved to 87.5%(5d),95.0%(10d),respectively with the above dosage.The optimum period to apply the fipronil should be at low instarnymth with knapsack sprayer,motor spraer or aero spraying.It may be availble for keeping most of the insect pests of rice at medium-late growth stage.
出处
《农药》
CAS
北大核心
1999年第12期26-28,共3页
Agrochemicals
