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不同诱蛾方法对棉铃虫诱集效果的比较及其在测报应用中的综合评价何桂忠贲秀兰(江苏省海安县植保站226600目前作为对棉铃虫短期预报及验证中期预报的手段,常采用杨树枝把、灯光、性诱剂等诱蛾方法。为了进一步验证这几种诱蛾方法对棉铃虫的诱蛾效果,1996~1... 相似文献
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频振式杀虫灯3年使用效果和成本核算 总被引:4,自引:0,他引:4
棉铃虫是我国重要农业害虫 ,研究棉铃虫最佳防治方案 ,是各级领导 ,棉花生产部门和农技人员十分关注的问题。自 1994年我区棉铃虫大发生以来 ,广泛推广白炽灯、性诱剂、频振式杀虫灯、诱蛾灵等诱蛾方法 ,在棉铃虫大田防治中取得了一定的成绩。为了筛选出效果好 ,成本低 ,使用方便的诱蛾方法 ,从 1996年开始对上述方法诱蛾效果进行比较研究 ,现将 3年试验示范、大田应用效果和成本调查报道如下。1 试验材料频振式杀虫灯 (河南汤阴佳多科工贸公司生产 )棉铃虫性诱剂 (中国科学院动物研究所提供 )、棉铃虫诱蛾灵 (山西运城志华新技术开发研究… 相似文献
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加拿大杨树叶气味对棉铃虫的引诱作用 总被引:11,自引:1,他引:11
加拿大杨树枝把田间诱蛾试验,单把日平均诱蛾4.17头,雌性比为1.72;在加拿大杨树枝把中加入棉铃虫性诱剂诱芯后,单反日平均诱蛾5.5头,雌笥比为1.86。鲜加拿大杨树叶粗提物对棉铃虫刚羽化处女雌蛾引诱效果为26.67%;经过堆放2天垢杨树叶粗提物对棉铃虫刚羽化的处女雌蛾引诱效果为44.44%。 相似文献
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三种诱蛾工具诱集棉铃虫效果比较湖北省枝江市植保站赵瑗玲项海兰施昌年棉铃虫是我市棉花生产上的大敌,为了寻求有效、经济、安全的防治方法,测报手段,今年在上级业务部门的部署下,比较高压汞灯、杨树枝把、性引诱剂等3种诱蛾工具诱集棉铃虫成蛾、控制田间产卵、减轻... 相似文献
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食诱剂与不同诱捕器结合使用对棉铃虫成虫诱捕效果的影响 总被引:1,自引:0,他引:1
为明确不同类型诱捕器对棉铃虫块状食诱剂田间诱捕效果的影响,2018年7月-9月在河北省廊坊市广阳区、河南省新乡市新乡县和原阳县的棉花、大豆、玉米、花生田,利用蛾类诱捕器和三角形诱捕器比较了块状食诱剂对棉铃虫的诱捕效果。结果表明,食诱剂分别与2种诱捕器结合,在4种作物田对棉铃虫成虫均具有明显的诱捕作用;蛾类诱捕器诱集到的棉铃虫成虫数量是三角形诱捕器的1.2~6.5倍。因此,蛾类诱捕器与棉铃虫块状食诱剂结合使用可以更有效诱捕田间棉铃虫成虫。 相似文献
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一种诱杀棉铃虫的有效方法──性诱剂应城市植保站黎贤伟棉铃虫性诱剂多年来主要应于测报上,近年来,随着棉铃虫生活特性研究的深入和性诱剂生产工艺的改进,棉铃虫性诱剂开始应用于防治工作。棉铃虫性诱剂的防治作用主要表现在两个方面。一是,大量诱集雄蛾,降低田间雄... 相似文献
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四种诱集源对棉铃虫成虫的诱杀效果及有效半径比较 总被引:12,自引:0,他引:12
研究了斋压汞灯、双波灯、性诱剂和杨树枝把四种诱集源对棉铃虫(Heli-coverpa armigera)的诱杀效果及有效半径,结果表明:四者均具有较明显的诱杀作用,其各自的诱杀效果有差异,并与棉铃虫种群数量有关,发生量大的世代或年份,效果较好,反之不明显或较差,综合比较各处理的诱蛾量、百株卵量、幼虫量及其活动态天敌碍,发现其诱杀效果的优劣次序为高压汞灯、双波灯、性诱剂、杨树枝把;2种灯的有效诱杀半径约为80-160m,性诱剂约30m,杨树枝把约在10m内,该范围内高压汞灯、双波灯区内的百株卵量比对照分别降低31.7%-33.8%、40.1%-41.5%,性诱剂降低10.7%-21.5%,杨树枝把降低4.8%-14.6%。 相似文献
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对孤雌生殖产两性子代的暗黑赤眼蜂的研究 总被引:2,自引:0,他引:2
试验证阴暗黑赤眼蜂孤雌生殖能产雌雄两性子代。雌蜂占90%以上,与两性生殖没有区别。在山西运城该蜂寄生棉铃虫及黄地老虎卵,人工接种时也能寄生杨雪毒蛾和多种夜蛾科害虫卵,但不能在柞蚕、蓖麻蚕卵内寄生。用杨雪毒蛾卵作寄主繁殖该蜂,方法简便,效果良好。在棉田小区中分别释放暗黑赤眼蜂和松毛虫赤眼蜂防治棉铃虫,寄生率分别为63.7%和47.9%。由于该蜂雌性比特高,对棉铃虫的防治效果较好,值得进一步研究。 相似文献
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1988—1989年在郑州和太康县对红铃虫蛾量消长和棉花结铃动态进行了研究。结果表明,发蛾动态与敏感青铃期并不完全吻合。一代和二代初期(6—7月份)为蕾花期,敏感青铃很少,且棉株对蕾花脱落有较强的超补偿功能,可不进行防治。8月上旬至9月中旬初为二代盛、末和三代初盛期,平均蛾量虽小人,但正是敏感青铃盛期,应为防治的关键时期。9月中下旬,特别是9月15日以后,蛾量虽居高不下,但大部棉田的敏感青铃率均已降到5%。故一般可以不治,如必须防治,也应把阈值放宽。模拟蛾量和敏感青铃动态多用 Logistie 曲线,作者发现此两种动态曲线受气候影响极大,常呈多波动式曲线,作者选用以生理时间(日度)为自变数的4次多项式模拟,精确度提高了近三倍,其模型为:春棉(?)=1.2467-6.2399x+7.3227x~2-0.8381x~3+0.02636x~4夏棉(?)=6.2935-22.4460x+22.3335x~2-4.1307x~3+0.2393x~4麦棉套(?)=2.6936-1.6746x+1.6804x~2+0.4252x~3-0.05153x~4 相似文献
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W. R. Ingram 《国际虫害防治杂志》2013,59(2):118-137
Abstract Barbados once grew large amounts of Sea Island cotton but the accidental introduction of pink bollworm (Pectinophora gossypiella) in the 1920s, falling prices and rising costs led to the collapse of the industry. Falling sugar prices subsequently led to a revival of interest in the crop but pink bollworm still presented a problem and warranted investigation. The synthetic sex pheromone of pink bollworm, gossyplure, was shown to attract far more males than hexalure or virgin females. Sticky traps needed stirring daily and were only able to catch about 50 males a night. Water, with a drop of liquid detergent, proved to be a suitable trapping medium and was cheaper than liquid paraffin although not quite as effective. The best type of trap from materials readily available was one made from a plastic half gallon ice cream container with lid and holes cut around the upper sides. Traps without the attractant caught very few moths. Gossyplure adsorbed onto rubber caps was attractive to pink bollworm males for over 56 days but the half-life appeared to be about 28 days. Best catches were obtained in cotton when the traps were suspended just below the tops of the plants and, within fields, traps at the leeward end caught more than traps elsewhere. Peak catches of males occurred before midnight in a black light trap whereas pheromone traps caught no males before midnight but peaked at 03.00h. A close season during which no cotton is allowed to grow is a recognised means of reducing pink bollworm carryover between crops. This was practised in Barbados but island-wide pheromone trapping showed that moths were caught throughout the close season. This continuous trapping of moths indicated that pink bollworm must be breeding (short-cycle) in order to survive. Trapping and laboratory studies confirmed the presence of long-cycle pink bollworm which entered diapause towards the end of the cotton season as daylength increased. This diapause terminated with shortening days after the new season's rains commenced. The case for a four month close season is discussed. Pheromone trap catches were shown to be very closely correlated with boll damage. Catches of 8–9 moths in a night represented a 10% level of boll damage some ten days later and this is the trapping level at which cotton growers are advised to begin insecticidal treatment. Thorough residue destruction is the key to a good close season and a suitable method was needed for use under Barbadian conditions. The method finally chosen and proved on an estate scale was to cut down the standing cotton with a horizontal-rotary chain slasher, driving across the rows of cotton, the debris was then raked along the rows, stacked and burnt and finally the stumps were ploughed in, again across the rows. The parasite Perisierola nigrifemur is very common in pink bollworm larvae towards the end of the season but too late to be of economic value. Predation of diapausing larvae by the mite Pyemotes ventricosus is very common at the end of the cotton crop and during the close season. Insecticidal application in Sea Island cotton which usually grows very tall (> 1.75m) and rank is best achieved with hand-held, battery-operated, u.l.v. sprayers. Control of pink bollworm can be obtained with carbaryl S formulations applied through these sprayers with the addition of a little water and molasses. Synthetic pyrethroids in u.l.v. formulations are also expected to provide control. 相似文献
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红铃虫危害棉株蕾花引起蕾、花、铃脱落,对结铃和产量有无影响进行系统的观察。经三年试验获得一致的结果,红铃虫危害棉株蕾花所引起的脱落,对棉株结铃率影响无显著差异;对棉株结铃数和产量影响也无显著差异。因此,第一代红铃虫田间可省去施药、摘虫花和花心捉虫等防治措施,减少繁琐的劳动,有利于保护棉虫天敌,维持生态平衡,控制棉蚜和棉铃虫等害虫的发生危害。 相似文献
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本文系根据1950—1962年的部分研究结果。从红铃虫各期虫态发育与温湿度关系、食料对幼虫生长发育的影响、以及幼虫滞育的一些有关生态特性,来探讨它的发生规律。根据分析:西北无虫区的原因,主要是受冬季低温强度大,夏季温差大,湿度低的限制,红铃虫既不能越冬,又不能繁殖;已感染的地区,根据红铃虫的有效繁殖日数,可以划分为四个世代类型:即二代区、二三代区、三四代区和多代区。关于红铃虫数量变动原因,与发生基数、气候条件和繁殖期的食料条件关系最为明显。与此同时,也指出了不同地区控制红铃虫种羣数量的途径。 相似文献