18.6%拌·福·乙悬浮种衣剂不同拌种时间对棉蓟马的防治效果     

孔艳  谢应华  孙良斌  张少民  雷斌  白灯莎·买买提艾力 《安徽农学通报》2011,17(9):136-137,143

采用田间小区和温室试验,研究了18.6%拌·福·乙悬浮种衣剂对棉蓟马的防效及在棉株体内的消解动态。结果表明：18.6%拌·福·乙悬浮种衣剂可以提高棉花出苗率,增幅为18～23个百分点,乙酰甲胺磷在棉苗体内的残留时间为32d左右,18.6%拌·福·乙悬浮种衣剂提前拌种对棉花出苗和对棉蓟马的防效没有太大影响。  相似文献   

多种药剂防治苜蓿蓟马的田间药效试验   总被引：3，自引：2，他引：1  

张蓉  马建华  杨芳  先晨钟  张社会 《草业科学》2004,21(1):20-21

应用多种药剂进行防治苜蓿蓟马田间药效试验,结果表明:4.5%高效氯氰菊酯、15%菜盛和生物农药0.1%中农1号对苜蓿蓟马具有显著的控制作用,速效性好、持效期长,药后10 d调查,4.5%高效氯氰菊酯、15%菜盛和0.1%中农1号的防效分别达到92.3%,91.0%和85.4%.  相似文献   

Heritability of thrips resistance in the ‘IPA-3’ onion cultivar in South Texas     

Brian K. Hamilton  Leonard M. Pike  Alton N. Sparks  David A. Bender  Richard W. Jones  Jonas Candeia  Geraldo de Franca 《Euphytica》1999,109(2):117-122

A two season study was conducted to compare the onion cultivars TG1015Y and IPA-3 for resistance to thrips in South Texas. Narrow and broad sense heritabilities were estimated from populations developed from the cross, ‘IPA-3’ × ‘TG1015Y’. Parents, F1, F2, and the respective backcross populations were evaluated for thrips numbers at the Texas Agricultural Experiment Station, Weslaco, TX. ‘IPA-3’ had significantly fewer thrips than ‘TG1015Y’ in both seasons. Yield was significantly different only in the 1996–97 season. The heritability of thrips resistance in this study was very low. Depending on the methods of estimation h ² was 5.3% and 4.0%, and H ² was 4.1% and 8.0%. These results suggest that greater genetic gains for thrips resistance in onion can be achieved by selection on a family basis rather than using single plant selection. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

花生番茄斑萎病毒病的发生与防治研究进展     

董炜博  李敏 《中国油料作物学报》2022,44(5):937-947

世界范围内,由蓟马传播的番茄斑萎病毒（tomato spotted wilt virus,TSWV）是危害花生的主要病毒之一。过去的40年中有关花生上斑萎病毒病的病原学、病害流行学以及综合治理等方面都取得了许多重要进展,本文简要回顾了花生上TSWV的发现和研究历史,重点介绍了花生上斑萎病毒病的流行规律、农艺防治、化学防治及抗病育种等方面所取得的进展与成就。近年来,TSWV在我国多种作物上不断被发现,给花生生产带来了越来越大的威胁,本文也介绍了2021年在大连地区花生上观察到的TSWV为害症状,并结合我国目前花生上斑萎病毒病的危害现状提出了应对潜在威胁的建议。  相似文献   

苜蓿新品种草原4号的选育     

特木尔布和  肖燕子 《草业科学》2017,34(4)

草原4号苜蓿(Medicago sativa cv.Caoyuan No.4)是对400余份苜蓿原始材料进行抗虫性鉴定,选择优良无性系,并结合抗虫性和配合力测定组配基础群体,通过3次轮回选择育成的抗蓟马苜蓿新品种(登记号:477)。该品种根直立,具有水平生长根;茎直立,有茸毛;叶为三出复叶,表面有茸毛;花紫色;荚果螺旋2~3回;千粒重1.86~2.35g。抗虫性强(为害点系数为0.26,虫情指数为0.33)、抗旱、抗寒、耐瘠薄。在呼和浩特地区可刈割3茬,干草平均产量在12 000~16 000kg·hm~(-2),种子产量达230.90kg·hm~(-2)。粗蛋白质含量在19%左右。适宜在我国华北南部苜蓿蓟马为害严重的各省(区)种植。  相似文献   

Quantification of imidacloprid toxicity to avocado thrips, Scirtothrips perseae Nakahara (Thysanoptera: Thripidae), using a combined bioassay and ELISA approach     

Byrne FJ  Toscano NC  Urena AA  Morse JG 《Pest management science》2005,61(8):754-758

A competitive ELISA (enzyme-linked immunosorbent assay) technique was evaluated for quantifying titres of imidacloprid in homogenates of leaf discs sampled from avocado plants treated with systemic applications of imidacloprid 240 g litre(-1) SC (Admire). Matrix effects were evident with undiluted leaf tissue homogenates, but these were effectively eliminated by dilution of homogenates in water. In a field trial conducted in a commercial nursery, there was an excellent correlation between imidacloprid residues within leaves and avocado thrips (Scirtothrips perseae Nakahara) mortality. However, with subsequent sampling over a 2-month period, the relationship between mortality and apparent imidacloprid concentration became less robust, suggesting that the material was being degraded within the plant to non-toxic metabolites. Nevertheless, assessments of thrips mortality on leaves that had been recently treated with imidacloprid established a lower threshold of activity for imidacloprid residues of 6 ng cm(-2) leaf. Limitations on the use of ELISA to quantify the impact of systemic insecticides on pest populations are discussed.  相似文献   

我国豇豆蓟马研究进展及综合防控措施     

吴圣勇  谢文  刘万才  雷仲仁  王登杰  任小云  张起恺  吕宝乾  贺振  唐良德 《植物保护》2024,50(2):10-18

豇豆Vigna unguiculata 喜温喜光,是一种适合在我国南方种植的豆科蔬菜。长期以来,豇豆病虫害多发重发,其中,蓟马是豇豆上最主要和最顽固的害虫之一。传统的化学防治方法对蓟马的防治效果常常不理想,并易造成农药残留问题。本文概述了我国豇豆产业的种植情况和以蓟马为主的病虫害问题及豇豆蓟马研究现状,并从农艺措施、理化诱控、生物防治、化学防治和抗性治理角度总结了豇豆蓟马的综合防治技术。最后,从构建豇豆蓟马的有害生物综合治理(integrated pest management, IPM)技术体系、加强基础研究和防控技术产品开发、建立科学用药和农药监管制度3个方面提出建议,以期为我国豇豆产业的绿色可持续发展提供参考。  相似文献   

不同类型杀虫剂单独及混配防治大棚甜椒蓟马田间药效试验     

HUANG Yabing  ZHAO Lin 《长江蔬菜》2008,(20)

通过对有机磷类杀虫剂、拟除虫菊酯类杀虫剂、氨基甲酸脂类杀虫剂、硝基亚甲基类杀虫剂、吡啶类化合物杀虫剂等不同类型杀虫剂单独及混配防治甜椒蓟马田间药效试验,结果表明:用2.5%绿色通EC800倍液 3%金世纪EC1000倍液混配液和20%好年冬EC800倍液 2.5%绿色通EC800倍液混配液防治甜椒蓟马具有很好的防治效果,相对防治分别达到93.53%,85.20%,且对甜椒生长安全,不伤花果,是2种可推广应用的配方化学杀虫制剂。  相似文献   

兰州地区蔬菜蓟马种类调查     

冯会文  贺春贵 《甘肃农业大学学报》2006,41(6):67-70

对兰州地区蔬菜上的蓟马种类进行了采集调查和室内鉴定,结果表明,该地区蔬菜上有蓟马20种,分别属于2亚目,3科,6属,蓟马科Thripidae 4属16种,纹蓟马科Aeolothripidae 1属1种,管蓟马科Phlaeothripidae 1属3种.其中甘肃新记录种有11种,有害蓟马15种,天敌1种.同时,在该地区未发现已侵入中国的西方花蓟马Frankliniella occi-dentalis.根据鉴定结果,编制了兰州地区蔬菜蓟马种类成虫检索表.  相似文献   

融入监督信息的k—mean聚类瓜蓟马预警模型     

陈志民  李亭  杨敬锋  彭晓琴 《安徽农业科学》2009,37(30):14738-14739

[目的]为提高瓜蓟马病虫害的预警效果。[方法]采用k-mean聚类建立了瓜蓟马预警模型,并针对瓜蓟马数据中在k-mean聚类算法下难以判断的情况,引入了监督信息,即模糊关联规则进行进一步划分。[结果]引入监督信息的k-mean聚类算法的预警准确率比最近邻算法、k-mean聚类和支持向量机预警准确率都要高。[结论]k-mean聚类过程中引入模糊关联规则能较有效地提高预警准确率。  相似文献