中国水稻科学

• 研究简报 • 上一篇    下一篇

稻茎毛眼水蝇幼虫密度估计方法的研究

秦厚国;叶正襄;李 华   

  1. 江西省农业科学院植物保护研究所,南昌330200
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1996-07-10 发布日期:1996-07-10

Studies on Estimation Methods of Larva Density of Hydrellia sasakii

Qing Houguo; Ye Zhengxiang; Li Hua   

  • Received:1900-01-01 Revised:1900-01-01 Online:1996-07-10 Published:1996-07-10

摘要: 比较了不同的稻茎毛眼水蝇幼虫密度估计方法,包括Nachman、Gerrard等5种方法的估计效果。

关键词: 稻茎毛眼水蝇, 种群密度, 估计方法

Abstract: According to the relation between zero specimen frequency(P0) and larva density(m) of Hydrellia sasakii investigated in the field, with the help of methods of population density estimation put forward by Iwao, Nachman, Gerrard, 5 formulae estimating larva density(m) of Hydrellia sasakii with the help of zero frequency(P0) were formulated: (1) P0=(0.896+0.023m)/m(-0.104+0.023m);(2) m=exp[0. 913ln(-lnP0) + 0.0258];(3)m=1.013(-lnP0)0.913;(4) m=1.019(-lnP0)0.924;(5) m=0.9999(-lnP0)0.971. In which, (5) formula was obtained using the theory value of formula (1) and (2) coordinated m=α(-lnP0)β. The comparison of estimation precisions and field application test, consistently shows that formula (5) estimation error was the minimum, precision was the maximum.

Key words: estimation method, Hydrellia sasakii, larva density