频振式杀虫灯布设因子对诱捕马尾松毛虫成虫效果影响的试验

通过频振式杀虫灯的不同布设状况对马尾松毛虫成虫的诱捕效果进行分析 ,从中找出杀虫灯诱蛾的最佳布置模式 ,提高杀虫效果 ,为推广应用提供科学依据。     

不同种类粘虫板在六堡茶有机茶园的应用技术研究

为了解天敌友好型色板与普通黄板对六堡茶有机茶园茶小绿叶蝉的诱捕效果,以及对天敌蜘蛛的影响,通过开展对比试验,调查不同时期、不同悬挂高度的两种粘虫板对茶小绿叶蝉和天敌蜘蛛的影响.结果显示,天敌友好型色板诱捕茶小绿叶蝉的效果较好,对天敌蜘蛛的影响较小.不同悬挂高度实验结果显示:6月份和8月份,天敌友好型粘虫板悬挂高于茶蓬面...     

粘虫板对生草梨园内害虫的诱杀效果

梨园内全园套种三叶草,分别在离地1.5m、1.0m和0.2m(三叶草高度)悬挂黄色和蓝色粘虫板,研究其对害虫的诱杀效果。结果表明,不同颜色、不同高度的粘虫板对害虫的诱杀效果不同。黄板诱杀梨树害虫的效果明显好于蓝板。0.2m高的黄板诱杀蚜虫、梨茎蜂、蛾蚋的数量显著高于其他高度黄板诱杀的数量。梨园内三叶草可作为诱集植物在一定程度上引诱害虫从梨树下移至三叶草,降低梨树上的害虫基数。     

我国新疆焉耆垦区作物轮作种植模式防除列当的有效性研究

本研究以新疆地区危害最严重的向日葵列当和瓜列当为研究对象，通过室内水培试验和室外盆栽模拟轮作试验来探究焉耆垦区轮作模式对两种列当的防除效果。结果表明，室内水培试验中各轮作作物的根系分泌物及萃取相刺激瓜列当种子的萌发率均在20.0%以下，但刺激向日葵列当种子产生的萌发率达到了50.0%以上；室外盆栽模拟轮作试验中，甜菜、小麦、辣椒与加工番茄轮作后，瓜列当的寄生数量未显著降低；但与向日葵轮作后，向日葵列当的寄生数量显著减少了60.0%以上。不同品种甜菜、辣椒和小麦地上部甲醇提取液刺激瓜列当种子的萌发率均低于10.0%，但是刺激向日葵列当种子的萌发率均达70.0%以上。本研究表明新疆焉耆垦区轮作种植模式不能有效防除瓜列当，但模式中的轮作作物均能够有效防除向日葵列当。本研究结果为防除新疆焉耆垦区向日葵列当和瓜列当提供理论依据。     

2019年草地贪夜蛾灯诱监测应用效果

2019年草地贪夜蛾灯诱结果,广西、湖南、湖北、河南、陕西、山西、宁夏、天津8省（区、市）14个高空测报灯观测点,6月始灯下陆续见蛾,8月-10月多数观测点出现明显蛾峰; 湖北、河南、天津3省（市）8个常规测报灯观测点7月-10月灯下见蛾,9月下旬和10月上旬出现蛾峰。因此,高空测报灯可用于草地贪夜蛾区域性种群动态监测,种群超过一定数量条件下常规测报灯有效,灯具需选择合适地点设置。多数高空测报灯下雄蛾量明显高于雌蛾量,常规测报灯雌雄比差异不大,其原因有待深入研究。     

Development of an automatic monitoring system for rice light-trap pests based on machine vision

Monitoring pest populations in paddy fields is important to effectively implement integrated pest management. Light traps are widely used to monitor field pests all over the world. Most conventional light traps still involve manual identification of target pests from lots of trapped insects, which is time-consuming, labor-intensive and error-prone, especially in pest peak periods. In this paper, we developed an automatic monitoring system for rice light-trap pests based on machine vision. This system is composed of an intelligent light trap, a computer or mobile phone client platform and a cloud server. The light trap firstly traps, kills and disperses insects, then collects images of trapped insects and sends each image to the cloud server. Five target pests in images are automatically identified and counted by pest identification models loaded in the server. To avoid light-trap insects piling up, a vibration plate and a moving rotation conveyor belt are adopted to disperse these trapped insects. There was a close correlation(r=0.92) between our automatic and manual identification methods based on the daily pest number of one-year images from one light trap. Field experiments demonstrated the effectiveness and accuracy of our automatic light trap monitoring system.     

具有节能作用的疏水器

简要阐述了疏水器的节能作用、种类及性能,并介绍了如何选择和维护管理疏水器。     

性诱剂对小菜蛾种群的迷向效果

采用迷向指标,评价了不同成虫密度、不同诱捕器数量对小菜蛾种群的迷向作用。结果表明,自设置性诱剂后的前6d,对小菜蛾成虫的迷向不断增强,10～18d后形成迷向高峰,18d后显著下降。在小菜蛾不同成虫密度下,随着田间菜蛾密度的增加,迷向率呈下降趋势,其中以田间蛾密度为4515～6000头/hm2时,迷向作用最强;同时性诱剂可有效地减少小菜蛾的田间落卵量,对小菜蛾种群的迷向作用105个/hm2效果较好。     

Application of vetiver grass Vetiveria zizanioides: Poaceae (L.) as a trap plant for rice stem borer Chilo suppressalis: Crambidae (Walker) in the paddy fields

Rice is an important staple food in China and it is at risk of attack by rice striped stem borer Chilo suppressalis, which occurs in most rice growing areas. In recent years, severe C. suppressalis outbreaks have been observed in China mainly due to changes in the rice cultivation systems, wide adoption of hybrid varieties and resistance to the dominant insecticides. Management relies primarily on chemical insecticides and resistance is an important contributing factor in these outbreaks. As a result, food safety of agricultural produce is reduced and the ecological and environmental integrities are threatened as well. Recently, environmentally friendly pest management measures, such as trap plants have been introduced for C. suppressalis management and this method can greatly reduce insecticide use. Our previous results indicated that the vetiver grass (Vetiveria zizanioides) is a dead-end trap plant that can effectively attract the adult females of C. suppressalis to lay eggs on it but where larvae are unable to complete their life cycle. This paper further explored the application of vetiver grass as a trap plant to manage C. suppressalis in the paddy fields. This environment-friendly tool can not only reduce C. suppressalis populations, it can also increase the diversity and abundance of natural enemies that can provide better environmental conditions for rice production.