灭幼脲Ⅲ号微胶囊及其复配剂防治桑天牛成虫的研究

１９９４～１９９５年研究表明,应用灭幼脲Ⅲ号微胶囊与其它农药微胶囊复配防治桑天牛成虫,效果明显;其中以灭幼脲Ⅲ号微胶囊与氯氢菊酯微胶囊复配防治效果最佳,平均产一、孕卵量以及化率都明显优于其它配方,且能延长持效期;而灭幼脲Ⅲ号微胶囊与来福灵９Ａ０微胶囊复配防治效果最差。灭幼脲Ⅲ号微胶囊＋优乐得（Ｂ）微胸囊与灭幼脲Ⅲ号微胶囊防治效果十分相近。     

应用灭幼脲3号微胶囊与其它农药微胶囊混合防治松褐天牛成虫研究

在松褐天牛成虫补充营养期间,采用１８％灭幼脲３号微胶囊８０％与其它农药微胶囊２０％的混合剂,在松林喷雾防治松褐天牛成虫是有效的。以灭幼脲３号微胶囊加安高杀４号微胶囊（杂环类）防治效果最佳,无论是当时药效,还是１０天、２０天、３０天后的持续药效均达１００％,灭幼脲３号微胶囊加安高杀３号微胶囊（除虫菊酯和有机磷复配）防治的效果也较好,但３０天后的持续有所降低。灭幼脲３号微胶囊加安高杀２号微胶囊（有机磷     

灭幼脲对杨潜叶跳象成虫产卵量及卵孵化影响试验的初步研究

灭幼脲 (又称灭幼脲 号 )是特异性杀虫剂 ,属低毒的化学药剂。 2 0 0 2年对鞘翅目、象虫科的杨潜叶跳象( Rhynchaenus empopulif olis Chen)进行了产卵前成虫的防治试验 ,观察其产量及对卵孵化的影响。     

灭幼脲类杀虫剂防治栗实象试验

应用卡死克、灭幼脲Ⅲ号和抑太保等灭幼脲类杀虫剂对板栗栗实象Ｃｕｒｃｕｌｉｏ ａｒａｋａｗａｉ Ｍａｔｓ．ｅｔ Ｋｏｎｏ进行了小区药效和林间防治示范试验。结果表明，三种药剂均可明显抑制栗实象成虫产卵量及子代卵的孵化，其中卡死克和灭幼脲Ⅲ号效果最佳，综合抑制率分别为９３．５％和８９．８％，抑太保稍低，其综合抑制率为７７．６％。林间防治示范试验，可使虫害率由平均５４％左右下降到８％以下，基下降率分别为：     

灭幼脲类杀虫剂防治栗实象试验

应用卡死克、灭幼脲Ⅲ号和抑太保等灭幼脲类杀虫剂对板栗栗实象Ｃｕｒｃｕｌｉｏａｒａｋａｗ ａｉＭａｔｓ．ｅｔＫｏｎｏ进行了小区药效和林间防治示范试验。结果表明,三种药剂均可明显抑制栗实象成虫产卵量及子代卵的孵化,其中卡死克和灭幼脲Ⅲ号效果最佳,综合抑制率分别为９３．５％ 和８９．８％ ,抑太保稍低,其综合抑制率为７７．６％ 。林间防治示范试验,可使虫害率由平均５４％ 左右下降到８％ 以下,其下降率分别为：卡死克９３．３％ 、灭幼脲Ⅲ号９４．４％ 、抑太保８６．３％ 。     

防治白蛾最佳药物——灭幼脲类农药

<正>以灭幼脲3号为代表的苯甲酰脲类杀虫剂,是昆虫生长调节剂中的几丁质抑制剂,它的杀虫机理也是通过抑制昆虫的几丁质合成酶,而导致害虫不能正常蜕皮而死亡,作用方式为胃毒和触杀。此类农药品种包括灭幼脲3号、杀铃脲、除虫脲(灭幼脲1号)、氟玲脲、苯氧威等。     

灭幼脲对杨干象作用机制和防治的研究

采用灭幼脲油剂，油胶悬剂等，用点涂的方法对杨干象幼虫和成虫进行了适时防治，结果表明：灭幼脲油剂可抑制表皮几丁质的合成达１５％以上；灭幼脲油胶悬剂抑制杨干象成虫精巢和卵巢的发育，可使成虫产卵间降低４０－７０％，使卵的孵化率降为零。这为杨干象的防治找到一条高效，安全，经济，易全文的新途径。     

阿维菌素·灭幼脲Ⅲ号防治马尾松毛虫技术

阿维菌素·灭幼脲Ⅲ号为阿维菌素和灭幼脲Ⅲ号两种生物农药的复合制剂,有激素和抗生素两类杀虫剂的特点,具胃毒兼触杀之功效.运用阿维菌素.灭幼脲Ⅲ号进行低剂量喷雾防治马尾松毛虫具有良好的防治效果;在使用阿维菌素·灭幼脲Ⅲ号防治马尾松毛虫时,应采用80 mL/hm2(600倍液)的剂量进行低剂量均匀喷雾,可达到药物用量少、防效...     

灭幼脲防治黄地老虎的试验研究

灭幼脲可以同时杀死黄地老虎的卵，幼虫，亦可杀死部分成虫，并且要使未被杀死的雌成虫产卵和卵孵人受到极大的抑制。灭幼脲油剂杀死幼虫８４．０３％－１００％左右，胶悬剂杀死幼虫８２．６４－９８．６１％左右；灭幼脲油剂杀死卵８３．３３－９２．８６％左右，胶悬剂杀 卵５．５５－２２．２２％左右；灭幼脲油杀死成虫８．３３－９．０３％左右，胶悬剂可杀死成虫７．６４－９．７４＾左右。     

灭幼脲防治榆蓝叶甲示范区试验报告

利用灭幼脲防治榆蓝叶甲越冬成虫能使产卵量明显减少。灭幼脲Ⅲ号亩施40毫升产卵量降低76.5%;灭幼脲Ⅰ号亩施15毫升降低52%;随药剂后效作用的发挥,可使总产卵量降低73—93%。用上述药。防治1龄幼虫,灭幼脲Ⅲ号死亡率为82%以上;灭幼脲Ⅰ号死亡率为82—87%。但对天敌昆虫,如异色瓢虫、中华草蛉、蠋敌、啮小蜂基本完全无害。     

松墨天牛生物学特性的研究

松墨天牛在福建闽北1a发生1代,以3～5龄幼虫在蛀道内越冬,极少数以低龄幼虫在树皮下越冬。4月上旬越冬幼虫在木质部内做一椭圆形蛹室化蛹,历时13～15d后成虫羽化。羽化后的成虫从蛹室向外咬圆形的羽化孔道飞出,6月上中旬是成虫羽化出孔的高峰期。成虫的雌雄性比为1∶1。在林间,成虫寻找松树嫩枝树皮补充营养,5～9d后开始交尾产卵,产卵前在树皮上咬刻槽,造成泪滴状松脂流下,1刻槽产卵1粒,少数可产2～4粒。卵期6～10d。幼虫孵化后取食松树内皮和韧皮部,在树皮外可见白色纤维状或褐色粉末状木屑与粪便的混合物。3龄幼虫咬一长椭圆形蛀入孔进入木质部,此后树皮外不再出现蛀屑。幼虫在蛀入木质部前死亡率极高,只有31 68%能蛀入树干中,幼虫期易受白僵菌侵染。幼虫期260～310d。     

Biological effects of the entomopathogenic fungus,Beauveria bassiana on the potato tuber mothPhthorimaea operculella (Seller)

A series of investigations have been carried out on the effect of the entomopathogenic fungusBeauveria bassiana on the various developmental stages ofPhthorimaea operculella. Both first and second insatar larvae were more susceptible than the third or fourth instars. The infected prepupae and pupae resulted in marked decrease in the emergence, longevity of moths, deposited eggs and their egg hatchability. An obvious increase in the pupal duration was observed and the resulting malformed adults were also recorded. The latent effects were markedly obvious, specially in high doses ofBeauveria bassiana.     

松褐天牛交尾产卵行为和卵期、孵化率测定

松褐天牛 Monochamus alternatus Hope成虫交尾 ,雌雄均无专一性 ,既能一雄多雌 ,也能一雌多雄 ;交尾次数对产卵量和卵的孵化率无显著影响 ;成虫对产卵场所的树种和树性有显著的偏嗜性选择行为。据测定 ,在 6月下旬至 7月下旬平均卵期 4.0 4天 ,卵的孵化率为 85 .76%。     

Effects of two different neem products on different stages of <Emphasis Type="Italic">Nezara viridula</Emphasis> (L.) (Heteroptera,Pentatomidae)

In this study, the effects of two different commercial neem insecticides (NeemAzal T/S and Neem Oil) were determined on different stages of Nezara viridula (L.) (Heteroptera: Pentatomidae) under laboratory conditions. Neem Azal and Neem Oil were applied at concentrations of 0.5 % and 2 %, respectively. Mortality was recorded after 3, 7 and 14 days for nymphs and adults; 7 and 14 days for old (4-day-old) eggs; and 14 days for newly laid (one-day-old) eggs. Both products have no significant effect on adults and newly laid eggs. However Neem Oil was found to be more effective than NeemAzal T/S on nymphs and on old laid eggs after 7 and 14 days. It can be concluded that both neem products have potential for insecticidal efficacy (approximately 60 %) against nymphs of N. viridula. at concentrations recommended by manufacturers for registered pests.     

Phenology,life table analysis and temperature requirements of the invasive brown marmorated stink bug,Halyomorpha halys,in Europe

The invasive Halyomorpha halys was accidentally introduced into Switzerland around 2004 and has recently established in the neighbouring countries of France and Italy. To better understand the population dynamics of this pest in Europe, the phenology, reproductive biology and temperature requirements of Swiss H. halys populations were investigated. Overwintered adults became active in April, but peak oviposition was not observed before early July. Individual females laid on average 79 eggs (maximum of 160). The oviposition period lasted from mid-June to end of September. Eggs laid in August and September did not result in offspring due to the low temperatures in autumn. Under natural fluctuating temperatures, development from egg to adult lasted between 60 and 131 days. The first new generation of adults did not occur before mid-August when the photoperiod was already below 15 h, which likely initiated diapause and suppressed the reproductive activity of new generation adults. Under controlled conditions of 20, 25 and 30 °C, Swiss H. halys populations developed within 75.8, 42.3 and 33.2 days from egg to adult, respectively. No development was possible at or below 15 and at or above 35 °C. The number of degree days required for completion of development from egg to adult was 588.24 DD. Under semi-natural conditions, total mortality of Swiss H. halys populations was 86.7 % with a net reproductive rate of 5.69, indicating growing populations. In Switzerland, H. halys is univoltine, but if it continues to spread into the Mediterranean area two generations per year could be expected.     

汕头毛健夜蛾生物学特性及防治措施

毛健夜蛾(Brithys crini)主要为害石蒜科植物。该虫在汕头1年发生5代,以蛹越冬。越冬代成虫于3月下旬开始羽化。幼虫有6龄。第1代幼虫于4月中旬开始孵化,4～12月均可见幼虫为害,以7～10月为害最重。卵期5～11 d,蛹期10～13 d,成虫期4～6 d。成虫有趋光性。毛健夜蛾的寄主有葱兰(Zephyranthes candida)、文殊兰(Crinum asiaticum var.sinicum)、朱顶红(Hippeastrum vittatum)等石蒜科植物,此外,还取食紫鸭跖草(Setcreasea purpurea)、芥蓝(Brassica alboglabra)、菠菜(Spinacia oleracea)等植物。药剂防治可选用米满、0.36%苦参碱、10%烟碱、25%灭幼脲3号。     

广林9号桉幼林的施肥效应

将磷肥、尿素和桉树专用肥3种肥料分为3个水平,对4个不同初植密度广林9号桉树幼林进行施肥处理。采用方差分析方法分析了不同施肥处理及不同初植密度对桉树幼林生长的影响。结果表明：不同施肥种类及施肥量对广林9号桉幼林生长差异显著,桉树专用肥的影响极显著,尿素影响显著,磷肥影响不显著,其中尿素随施用量的增加对苗木生长存在抑制作用;桉树专用肥随施用量的增加对苗木生长有明显促进作用。不同初植密度的1年生广林9号桉幼林生长差异不显著。     

Effects of gamma radiation on life stages of the Mediterranean flour moth, Ephestia kuehniella Zeller (Lepidoptera: Pyralidae)

We report the results of experiments conducted with Ephestia kuehniella Zeller to determine the effects of gamma radiation on life stages. Eggs, larvae, pupae and adults were irradiated with increasing doses of gamma radiation (seven dose levels between 50 and 400 Gy for eggs and larvae, six dose levels between 50 and 350 Gy for pupae and four dose levels between 250 and 550 Gy for adults). All the experiments were conducted in a growth chamber maintained at 27 ± 1°C, 65 ± 5% r.h., and alternating 14 h light:10 h dark cycles. The number of adults that developed from irradiated eggs and larvae was lower than the untreated control. Doses of 200 Gy and above prevented adult emergence from irradiated eggs. Although a dose of 200 Gy was enough to prevent adult emergence from young larvae, 250 Gy should be used to prevent adult emergence completely from last instar larvae. Delayed developmental periods were observed for the treated eggs and larvae. Fecundity and egg hatchability were decreased depending on the doses applied. Decreased fecundity and egg hatchability were more prevalent when both the male and female pupae were treated compared to the treatment of female pupae only. There was no significant decrease in the fecundity of irradiated adults except 550 Gy, and no eggs hatched at doses of 300 Gy and above.     

灭幼脲1号对榆蓝金花虫抑制作用的研究续报

本文进一步探索了榆蓝金花虫中毒后,残存种群的发育、繁殖情况,在打乱榆蓝金花虫的种群结构、消弱其繁殖力和生存力方面,取得了成功,林间应用效果良好。a.灭幼脲1号的施用能在下一虫态或子代产生药理效应,成虫期可引致雌虫不育,所产之卵不孵化率为100％;幼虫期个体发育至成虫,产卵量降低60％.b.经处理的幼虫发育受阻,使龄期延长2～4d不等,残存种群发育、变态无明显的高峰期,结构紊乱.c.林间常规MV喷雾,亩施药量4.27～8.54g(折纯品),虫口减退率在94.5％以上。