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智利小植绥螨防治设施西瓜二斑叶螨的研究与应用 被引量:1
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作者 李金萍 孙贝贝 +3 位作者 侯峥嵘 于琪 张莹 尹哲 《湖北农业科学》 2022年第22期62-65,共4页
为探明智利小植绥螨(Phytoseiulus persimilis Athias-Henriot)防治设施西瓜二斑叶螨的关键技术和持续控害效果,研究了不同释放时期和释放量条件下智利小植绥螨对西瓜二斑叶螨的防治效果,并持续调查了连续4年释放智利小植绥螨的防治效... 为探明智利小植绥螨(Phytoseiulus persimilis Athias-Henriot)防治设施西瓜二斑叶螨的关键技术和持续控害效果,研究了不同释放时期和释放量条件下智利小植绥螨对西瓜二斑叶螨的防治效果,并持续调查了连续4年释放智利小植绥螨的防治效果。结果表明,释放时期显著影响智利小植绥螨对二斑叶螨的防治效果,二斑叶螨平均数量≤2头/片叶时,释放智利小植绥螨对二斑叶螨的控制效果最好,最大防治效果为82.3%,当二斑叶螨平均数量>50头/片叶时,防治效果较差,不宜释放;释放量也显著影响智利小植绥螨对二斑叶螨的防治效果,按照25头/m^(2)和30头/m^(2)释放智利小植绥螨7、14 d的防治效果均能超过80%,14 d的防治效果显著高于43%联苯肼酯悬浮剂;连续4年定点定棚使用智利小植绥螨防治二斑叶螨,天敌释放量逐年降低,10头/m^(2)释放量即可有效控制二斑叶螨为害,防治效果为89.7%。 展开更多
关键词 智利小植绥螨(phytoseiulus persimilis Athias-Henriot) 设施西瓜 二斑叶螨(Tetranychus urticae Koch)
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Mathematical Model for Two-Spotted Spider Mites System: Verification and Validation
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作者 Yan Kuang David Ben-Arieh +3 位作者 Songnian Zhao Chih-Hang Wu David Margolies James Nechols 《Open Journal of Modelling and Simulation》 2017年第1期13-31,共19页
This paper presents and compares four mathematical models with unique spatial effects for a prey-predator system, with Tetranychus urticae as prey and Phytoseiulus persimilis as predator. Tetranychus urticae, also kno... This paper presents and compares four mathematical models with unique spatial effects for a prey-predator system, with Tetranychus urticae as prey and Phytoseiulus persimilis as predator. Tetranychus urticae, also known as two-spotted spider mite, is a harmful plant-feeding pest that causes damage to over 300 species of plants. Its predator, Phytoseiulus persimilis, a mite in the Family Phytoseiidae, effectively controls spider mite populations. In this study, we compared four mathematical models using a numerical simulation. These models include two known models: self-diffusion, and cross-diffusion, and two new models: chemotaxis effect model, and integro diffusion model, all with a Beddington-De Angelis functional response. The modeling results were validated by fitting experimental data. Results demonstrate that interaction scheme plays an important role in the prey-predator system and that the cross-diffusion model fits the real system best. The main contribution of this paper is in the two new models developed, as well as the validation of all the models using experimental data. 展开更多
关键词 Two-Spotted SPIDER MITE phytoseiulus persimilis MATHEMATICAL Model PREY-PREDATOR SYSTEM
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