华山松挥发性物质与华山松木蠹象危害关系

采用同时蒸馏萃取方法提取华山松健康木和衰弱木树皮挥发性物质,而后用"Y"型嗅觉仪实验室内测试华山松木蠹象对挥发性物质的趋性。在此基础上采用GC/MS方法对华山松健康木和衰弱木树皮挥发性物质成分进行分析,从而了解华山松树皮挥发性物质与华山松木蠹象危害的关系。结果表明:健康华山松树皮中所含挥发性物质对华山松木蠹象具有很强的引诱作用,树势衰弱的华山松树皮中所含挥发性物质对华山松木蠹象有拒避作用。提取的健康华山松树皮挥发性物质中共65种成分,其中相对质量分数最大的是柠檬烯(29.27%),苯(17.81%)次之;树势衰弱的华山松树皮中所含挥发性物质共66种,其中相对质量分数最大的成分为3-蒈烯(26.97%),β-蒎烯(20.22%)次之。     

华山松木蠹象为害特性的初步研究

经对华山松木蠹象历时２年的调查和试验研究，初步了解了华山松木蠹象的分布、寄主域、为害特性、为害方式及为害部位。结果表明：该虫在滇东北、滇南、滇中及滇西地区均有分布；其寄主主要是松科的多种树种，该虫具有为害致死速度快，扩散蔓延速度快，只为害健康植株，成虫羽化历期长，防治难度大的特点。本项研究为制定一套经济有效的华山松木蠹象综合防治措施打下了基础。     

樟子松球果象甲防治决策的专家系统（PPPES）

为了解决生产防治部门的实际防治决策困难。传播有关防治专家长期研究和实践中积累起来的研究结果和宝贵经验，更好地指导生产实践。文章研究了用人工智能专家系统技术实现和解决樟松种实害虫球果象甲的防治与决策问题。     

华山松木蠹象发生与其寄主树势的关系

对会泽县者海国营林场华山松木蠹象危害情况及寄主树势进行调查,结果为:2块华山松林地内,在95%的可靠性下,华山松树高、胸径、当年新抽侧梢平均长度及1000束针叶鲜重的均值差异显著,2块林地华山松木蠹象成虫危害留下的蛀食孔、流脂点及产卵痕均值差异显著.表现为华山松林树势越强,华山松木蠹象成虫蛀食孔越多,寄主流脂点越多,而树势越弱其上的产卵痕越多,使华山松木蠹象越易爆发成灾.     

速扑杀防治云南木蠹象试验初报

云南木蠹象是鞘翅目象甲科的一种蛀干害虫,危害健康云南松。2002年在贵州威宁暴发危害,当时除了人工清理枯死枝条、枯死植株外,无有效防治措施。在羽化期喷施1000倍40%速扑杀乳油两次后,云南木蠹象的危害指数平均下降11.08,防治效果可达50.6﹪。通过试验,我们认为速扑杀可用在虫源地控制虫口密度,连续2￣3年使用可以抑制虫害蔓延扩散。     

云南境内5种象虫幼虫和蛹的形态描述

分别描述了云南木蠹象（Pissodes yunnanensis Langor,Situ et Zhang),多瘤雪片象（Niphades verrucosus Voss)，粗刻点木蠹象（Pissodes punctatus Langor,Situ et Zhang)；果核芒果象（Sternochetus olivieri Faust）和果肉芒果象（Sternochetus frigidus Faust）等5种象虫的幼虫和肾的形态特征，并配备插图和说明，幼虫主要特征包括头部正面观、内唇、上颚、下颚、第Ⅵ腹节、气 门；蛹体正面观，背面观，臀板和臀棘。列出了幼虫检索表，并报道了5种象虫的生活习性。     

伊春林区松黄星象的发生规律

通过多年对松黄星象（Pissodes nitidus Rodlofs)虫情系统调查，初步弄清了松黄星象在伊春林区的发生规律，为更好地防治松黄星象提供依据。     

大足鼠RatusnitidusHodgson的数量预测研究

】大足鼠６月和１０月高峰期的数量与上年３月的种群数量、性比和年龄结构有关。本文建立了线性回归，逐步回归和模糊相关的关系式。其中，模糊相关模型能最好地拟合原始数据，可作为预报手段     

Fertility control of Rattus nitidus using quinestrol: effects on reproductive organs and social behavior

Fertility control has been identified by studies in the laboratory and the field as a more appropriate and long‐term control strategy for rodent pests than lethal control. In this study, we investigated the effects of quinestrol on mass of reproductive organs and on social behaviors in female and male Himalayan field rats (Rattus nitidus). A total of 16 adult females and 16 adult males were randomly assigned to 4 groups. One male and one female group were fed rice with 0.005% quinestrol by weight for 7 days, and another 2 groups were fed rice only. After 7 days, rats were assigned to 10 min dyadic encounters between groups, and investigation, aggression, defense and attack latency were quantified. All animals were killed on day 10, and reproductive organs were dissected and weighed. Dyadic encounter data showed that there were obvious changes in social behaviors of quinestrol‐treated rats. Quinestrol significantly inhibited the investigative behavior of quinestrol‐treated males toward control females in Rattus nitidus, but seldom affected investigation between control males and quinestrol‐treated females. Aggression of control females toward quinestrol‐treated males was higher than that of quinestrol‐treated females, and defense of quinestrol‐treated males toward control females was more remarkable than that of control males. Quinestrol remarkably decreased wet masses of epididymis and spermotophore in males and ovaries in females, but had no effect on wet masses of testes and uteri after quinestrol treatment. These results indicate that the anti‐fertility effects of quinestrol on R. nitidus are attributed to not only suppressing reproductive organs but also impacting social behaviors associated with territory defense and mate choice.     

利用有效积温预测松黄星象发育历期的研究

温度是影响松黄星象(Pissodes nitinus Roelofs)生长发育最大的一个气候因子。为了掌握松黄星象各虫态发育与温度的关系,为其发生期预测预报提供理论依据,在自然变温的条件下,对松黄星象卵、幼虫、蛹期的发育历期进行了实地观察,并对卵期、幼虫期和蛹期这3个虫态的发育起点温度和有效积温进行了计算、测定及验证,证明利用有效积温预测松黄星象各虫态的发育历期是准确可行的。