茶尺蠖感染核型多角体病毒后病死时间分布的数学模拟

A MATHEMATICAL SIMULATION ON THE DISEASED DEATH TIME DISTRIBUTION OF ECTROPIS OBLIQUA PROUTLARVAE INFECTED WITH ITS NUCLEAR POLYHE ROSIS VIRUS

本文观察了１４℃、１８℃、２２℃、２６℃４种恒温和杭州５一６月自然变温下，茶尺蠖各龄初幼虫感染核型多角体病毒后的病死时间分布。结果表明，各恒温下幼虫累计相对病死频率的时间分布（Ｔ－分布）趋于一致。病死时间正规化后；同龄幼虫在各恒温下的病死时间分布可用公共Ｔ－分布代表，并可用Ｗｅｉｂｕｌｌ函数很好地加以拟合。采用此法，也可较好地模拟自然变温下幼虫的病死时间分布。

he diseased death time distributions of Ectropis obliqua Prout larvae infected with itsnuclear polyhedrosis virus(EoNPV)at the beginning of every instar under four constanttemperattires(14℃ 18℃, 22℃,26℃) and natural flucttiating temperature during May andJune in Hangzhou were respectively observed The time distributions(T- distributions)ofcumulative relative cliseased death frequeney under four constant temperatures were approxi-mately consistent. Through normalizing the diseased death time all T-distributions of thelarvae fed with the NPV al the beginning of the same instar under differnt constant temperatures could be represen by the same standard T-distribtition which could be quite simulated with Weibtill clistribtitional function The T-distribution of diseased death larvae undernatural fluctating temperture e also coud be simlated with the same method。