| 桑螟食叶量测定及其防治指标的研究 |
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| 引用本文： | 浦冠勤,毛建萍,于军香,张永辉,王卫明,朱引根,洪志英.桑螟食叶量测定及其防治指标的研究[J].蚕业科学,2004,30(2):207-210. |
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| 作者姓名： | 浦冠勤 毛建萍 于军香 张永辉 王卫明 朱引根 洪志英 |
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| 作者单位： | 苏州大学农业科学与技术学院,苏州,215006;吴江市农林局蚕桑站 |
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| 摘 要： | 通过对桑螟食叶量测定和发育历期的调查 ,明确了桑螟在 2 5℃恒温条件下的幼虫历期为 12～ 13d ,幼虫一生鲜叶食下量为 4 15mg ,其中 4、5龄的食叶量约占全龄食叶量的 82 3% ,据此可确定桑螟的防治指标和防治适期。经测算 ,桑螟春夏季的防治指标为 2 4 0 0 0～ 30 0 0 0头 /hm2 ,秋季的防治指标为 36 0 0 0～ 6 0 0 0 0头 /hm2 ;而农药防治的最佳时期应掌握在 3龄卷叶前为宜。
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| 关 键 词： | 桑螟 食叶量 防治指标 防治适期 |
| 文章编号： | 0257-4799(2004)02-0207-04 |
| 修稿时间： | 2003年8月22日 |
Measuring the Feeding Amount by Diaphania phloalis Walker and Research on its Occurring Density by Prevention and Cure |
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| PU Guanqin,MAO Jianping,YU Junxiang,ZHANG Yonghui.Measuring the Feeding Amount by Diaphania phloalis Walker and Research on its Occurring Density by Prevention and Cure[J].Acta Sericologica Sinica,2004,30(2):207-210. |
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| Authors: | PU Guanqin MAO Jianping YU Junxiang ZHANG Yonghui |
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| Abstract: | Measuring the feeding amount by Diaphania phloalis Walker and its developing stage,it was revealed that the larval stage was 12～13 days and the quantity of fresh leaves eaten in whole life was 415 mg,the feeding amount in 4 th and 5 th instars larva was 82.3%.Those offered the scientific basis for determining the occurring density and the optimum period of prevention.The results showed that the occurring density of prevention and cure in spring and summer is 24 000～30 000 heads/hm 2 and the occurring density of prevention in autumn is 36 000～60 000 heads/hm 2.The optimum period of the pesticide prevention should be before 3rd larval instar. |
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| Keywords: | Diaphania pyloalis WalkerThe feeding anountThe optimum period of control The occurring density of control |
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