玉米粗缩病灰飞虱传毒模型的建立  

Model of Rice Black Streaked Dwarf Virus(RBSDV)Transmission on Maize Seedlings by Laodelphax striatellus Fallén

作　　者：陈长军[1] 程兆榜[1] 熊如意[1] 张文荟[1] 周益军[1] 范永坚[1] 

机构地区：[1]江苏省农业科学院植物保护研究所,南京210014

出　　处：《上海交通大学学报（农业科学版）》2004年第1期7-11,共5页Journal of Shanghai Jiaotong University(Agricultural Science)

基　　金：江苏省九五重点攻关项目(BE96386)

摘　　要：本文用麦夸特法(Marquardt)拟合了多种假定模型的参数,获得了玉米粗缩病灰飞虱接虫传毒模型:其中P、T、N分别表示接虫传毒后玉米成株期的发病率,接毒时间(h)和接虫数量(头/株)。F回归**=17.0235,R=0.8726。模型表明在玉米上灰飞虱传播RBSDV的有效性较高,短时间内以有效虫量接毒即可获得较高的发病率,随着时间的延长或接虫量的增加,病株率增长的幅度越来越小;模型揭示,对玉米粗缩病采用治虫控病措施时,在短时间内迅速杀灭毒灰飞虱个体,才能达到较好的防治效果。并对建模过程进行了验证。P=C11+C2exp(-(C3T+C4N))=85.7231+10.391exp(-(1.3582T+0.1889N))Indexes of linear and curve equations were simulated by the method of Marquardt based on DPS(Data-Processing Station) in this paper and model of spreading RBSDV in the maize seedlings inoculated by small brown planthopper (Laodelphax striatellus Fallén), whose regress index was 0.8726, was acquired as follows: Among this model, P、T and N mean the rate of diseased occurrence (%) , inoculated time(h) and number of inoculated insects with the virus in per maize seedling respectively. It demonstrated that on the one hand, the longer the inoculated time lasted, the more heavily the occurrence of disease took place when the number of inoculated insects in one seedling was constant; and on the other hand , the more infected insects were inoculated in one seedling, the same result was acquired when the inoculated time invariable. The modeling was tested with nymphae and eclosing small brown planthopper from Dongtai, Jiangsu.

关 键 词：玉米 粗缩病 灰飞虱 接虫传毒模型 麦夸特法 Marquardt 防治效果 病毒病 

分 类 号：S435.131.4[农业科学—农业昆虫与害虫防治]