共查询到20条相似文献,搜索用时 81 毫秒
1.
枣球蜡蚧化学防治试验 总被引:1,自引:0,他引:1
枣球蜡蚧Eulecaniumgigantea(shinji)通过雌虫和若虫刺吸枝干及叶片,吸取养分和水分,引起林木生长势衰弱或枝干枯死。在喀什地区,1992年发生面积达1000公顷,结合生产进行了化学防治研究,得知在雌虫膨大前期是防治的关键时期,选用氧化乐果、久效磷刮皮涂干、效果较好;初孵若虫期是防治的最佳时期,用氟氰菊酯、久效磷喷雾防治效果最好。 相似文献
2.
枣球蜡蚧上3种跳小峰的记述 总被引:2,自引:0,他引:2
本文记述了寄生于枣球蜡蚧(Eulecanium gigantea)上的3种寄生峰,即球花角角跳小峰〔Blastothrix sericea(Dalman)〕、蜡介跳小峰〔Encyrtus infidus(Rossi)〕和中国新记录种--拜氏跳小峰(Oriencyrtus beybienkoi Sugonjaev et Trjapitzin)。简述了生物学特性。 相似文献
3.
枣球蜡蚧是满洲里榆树上的主要害虫,以若虫和雌性成虫严重危害榆树。为了掌握该虫发生规律,对其展开了调查研究。研究结果,满洲里7个地区平均虫口密度为3.57个/10 cm,平均有虫株率为57.86%。危害最严重和最轻的地区分别是203国道和机械化林场,危害指数分别为30.2和0。不同地区枣球蜡蚧有虫株率图显示,由远方中学到机械化林场这7个地区枣球蜡蚧发生规律可能与榆树种植区地理方位有关,本次调查研究为今后防治杏球坚蚧提供有效的数据依据。 相似文献
4.
我国红蜡蚧的寄生蜂共记载有30种,文章根据各种蜂的生物学习性,对这些寄生蜂进行了订正研究,确定其中19种为红蜡蚧的初寄生蜂,其中跳小蜂科Encyrtidae 10种:红蜡蚧扁角跳小蜂Anicetus beneficus Ishii et Yasumatsu、霍氏扁角跳小蜂A.howardi Hayat,Alam et Agarwal、红帽蜡蚧扁角跳小蜂A.ohgushii Tachikawa、食红扁角跳小蜂A.rubensi Xu et He、寡毛扁角跳小蜂A.rarisetus Xu et He、柯氏花翅跳小蜂Microterys clauseni Compere、聂特花翅跳小蜂M.nietneri (Motschulsky)、红黄花翅跳小蜂M.rufofulvus Ishii、美丽花翅跳小蜂M.speciosus Ishii、匀色花翅跳小蜂M.unicoloris Xu;蚜小蜂科Aphelinidae 7种:斑翅食蚧蚜小蜂Coccophagus ceroplastae (Howard)、夏威夷食蚧蚜小蜂C.hawaiiensis Timberlake、赛黄盾食蚧蚜小蜂C.ishiii Compere、日本食蚧蚜小蜂C.japonicus Compere、赖食蚧蚜小蜂C.lycimnia (Walker)、黑色食蚧蚜小蜂C.yashidae Nakayama、蜡蚧斑翅蚜小蜂Aneristus ceroplastae Howard;金小蜂科Pteromalidae 1种:盔蚧短腹金小蜂Anysis saissetiae (Ashmead);姬小蜂科Eulophidae 1种:蜡蚧啮小蜂Tetrastichus ceroplastae (Girault)。5种为红蜡蚧的重寄生蜂:粉蚧克氏跳小蜂Clausenia purpurea Ishii、敛眼优赛跳小蜂Eusemion comigerum (Walker)、褐软蚧尖角跳小蜂Pareusemion studiosum Ishii、微食皂马跳小蜂Zaomma lambinus(Walker)、日本方梗跳小蜂Cerapteroceroides japonicus Ashmead,其他6种为误订。另外,还记述了各种寄生蜂的寄主及分布,以便参考。 相似文献
5.
6.
枣球蜡蚧在新疆的分布,寄主及危害特点 总被引:3,自引:0,他引:3
该文记叙了国内森林植物检疫对象枣球蜡蚧Eulecanium gigantea(Shinji)在新疆维吾尔自治区的传入历史,分布,寄主和危害特点等。 相似文献
7.
8.
本文记述了寄生于枣球蜡蚧(Eulecanium gigantea)上的3种寄生峰,即球花角跳小蜂[Blastotrix sericea(Dalman)]、蜡介跳小峰[Encyrtus in fidus(Rossi)]和中国新记录种-拜氏跳小峰(Oriencyrtus be ybienkoi Sugonjaev et Trjapitzin)。简述了生物学特性。 相似文献
9.
10.
本文重点报导了考氏白盾蚧的天敌寄生蜂主要种类6种。筛选出优势种岭南黄蚜小蜂,Aphytis lingnanensis,描述介绍该蜂的形态和生物学特性。选出繁育寄生蜂的最佳人工寄主。提出可利用马铃薯繁殖茶常本圆蚧做中间寄主,效果良好。还提出适时合理施用化学农药,是保护利用天敌寄生蜂的关键措施。 相似文献
11.
12.
13.
14.
15.
Effects of Different Covering Ways on Emergence Rate of Sophora japonica L. Afforested by Direct Seeding 总被引:2,自引:0,他引:2
LI Qingmei LIU Yan XING Shangjun SONG Yumin MA Fengyun HOU Longyu . Research Institute of Forestry Chinese Academy of Forestry Beijing P.R. China . Forestry College of Sh ong Agricultural University Tai’an P. R. China . Sh ong Academy of Forestry Jinan P. R. China . Institute of Botany Chinese Academy of Sciences Beijing P. R. China 《中国林业科技(英文版)》2008,(3):65-69
In order to maintain higher emergence rate with direct seeding in Shandong rocky mountain, effects of different covering ways on emergence rate of Sophora japonica L. direct seeding were studied. The results showed that both mulching film and grass cover could effectively increase the moisture content of the soil at the depth of 0-30 cm, contributing to soil moisture conservation and the inhibition of soil evaporation, which created favorable moisture environment for the growth of S. japonica seeds. Both th... 相似文献
16.
2012年1月至2014年6月,在玉龙县对危害油橄榄(Olea europaea)的介壳虫种类、发生规律、天敌种类进行调查.结果表明:玉龙县油橄榄介壳虫种类主要有蚧科的橄榄黑盔蚧(Saissetia oleae)、盾蚧科的红圆蚧(Aonidiella aurantii )和矢尖蚧(Unaspis yanonensis);每年4月、10月为介壳虫的发生高峰期;3种介壳虫的捕食性天敌主要有黑缘红瓢虫(Chilocorus rubidus)和红点唇瓢虫(C. kuwanae). 相似文献
17.
We investigated the short-term and long-term mitigation of Al toxicity by Ca and Mg in pot trials of Japanese cedar (Cryptomeria japonica D. Don). We found that in the initial stages of treatment, Al toxicity at high Al concentration (5mM) was mitigated by Ca and Mg through the stimulation of antioxidant enzyme activities in needles. However, growth reduction occurred after 11 months exposure to Al despite the coexistence of Ca and Mg. Growth reduction was related to Al3+ activity in solution rather than the concentration of Ca and Mg. Therefore, when considering the influence of soil acidification on Al toxicity in forest ecosystems, it is important to consider not only the potential for mitigation of Al toxicity by base cations, but also the potential for factors in the soil solution to change the chemical form of Al. 相似文献
18.