林木抗虫机制研究进展

分别从林木对害虫的抗性防卫、林木抗虫的化学机制及遗传机制等方面 ,对国内外林木抗虫机制研究的现状与进展进行了综述。认为抗虫性不是单因素的 ,而是形态学、解剖学及生理生化因子和谐作用下对入侵昆虫产生的物理和化学影响能力     

蚁形郭公虫人工饲料及繁殖饲养研究

在Reeve提出的配方基础上,研制出了适宜蚁形郭公虫Thanasimus formicarius的人工饲料配方,并以该配方饲料为基础,形成相应配套的蚁形郭公虫饲养技术。     

菌根剂对桃、李、柰果实重量及病虫抗性的影响

为探索果树采用何种施肥方法 ,具较好经济效益 ,在桃、李、柰等果树上 ,选择Pt菌根剂、超大生物菌肥、肥力高和常规施用复合肥进行比较实验 ,发现Pt菌根剂具有较好经济效益。     

浙江衢州毛竹林低改后害虫种群变动分析

自20世纪80年代始，衢州市各县(市、区)逐渐推广毛竹低产林改造技术，为竹林增产增效打下了基础。但是，由于改制后的毛竹林地被挖锄，天敌资源锐减，竹林中年年有笋，立竹上终年披叶，使竹子害虫食物条件改善，致使竹子害虫种类、数量增加，危害逐年加重。通过害虫种群变动分析，可以为开展竹林病虫害综合防治提供有效的应对措施。     

Host selection of small cedar longicorn beetle, <Emphasis Type="Italic">Callidiellum rufipenne</Emphasis> (Coleoptera:Cerambycidae), on Japanese cedar, <Emphasis Type="Italic">Cryptomeria japonica</Emphasis>, in terms of bark water content of host trees

We caught the adults of a secondary wood-boring insect, Callidiellum rufipenne (Motschulsky), on Japanese cedar, Cryptomeria japonica D. Don., trees and logs with manipulated bark water contents to clarify the mechanism of host selection by C. rufipenne. More C. rufipenne were trapped when the bark water content range was ca. 120–200%. Fewer C. rufipenne were trapped at higher and lower bark water contents. These findings indicate that C. rufipenne adults do not simply select weakened or dying trees. Bark water content is one of important factors for C. rufipenne choosing their host for oviposition.     

A Study on the Effects of Insect Pests and Diseases on Intensively Managed Plantations

Basedon the results of monitoring the environment of China National Afforestation Project (NAP) and the investigation on insect pests and diseases in 1.2 million ha of plantations, the author elaborates the areas, species and causes of insect pests and diseases occurring in the project's areas and provides fundamental theory for guiding environmental protection and plantation establishment in a sound way. Since the project's activities strictly follovved the guideline of environmental protection in past five years, little losses were caused by some commonly insect pests and diseases.     

秦皇岛市区园林昆虫种类调查初报

本文作者利用2年时间,对秦皇岛市区园林昆虫区系进行了调查。初步摸清了秦皇岛市区园林害虫种类及天敌昆虫资源情况。共查出园林害虫50科235种,园林天敌昆虫10科22种。为科研、教学及生产提供了依据。     

臭椿、新疆杨混交林对光肩星天牛选择寄主行为的影响

利用3年生臭椿、新疆杨在室内建立混交林进行光肩星天牛成虫放飞试验.结果表明:臭椿、新疆杨混交林对天牛成虫的寄主选择有显著影响,天牛成虫的交尾行为只在新疆杨植株上进行;天牛成虫在林内植株上着落的总虫次随新疆杨株数的减少而下降,交尾次数也减少;臭椿、新疆杨植株数量在林分中所占比例在一定范围时,天牛成虫在新疆杨和臭椿上着落的虫次比均趋于稳定;新疆杨与臭椿以行状3:2和2:3混交时林分的抗虫效果较好.     

营林技术措施对马尾松毛虫灾害影响的研究

营林技术措施控制松毛虫灾害的研究结果表明：营林技术措施对松毛虫灾害有明显的控制作用，直接影响了森林生态系统，包括对森林植物群落、森林小气候、昆虫及其它动物群落产生影响；并可使树木生理发生变化，诱发林木的抗虫性，从而达到控制马尾松毛虫灾害的目的。     

利用91卫图助手软件实现林业矢量数据坐标系的转换

以永平县林业矢量数据为例,利用91卫图助手软件和ArcGIS软件,通过北京54坐标系矢量数据在各坐标系下叠加、坐标系转换参数的计算、矢量数据坐标系的转换等步骤,阐述实现矢量数据坐标系WGS84、北京54、西安80和国家2000坐标系相互转换的方法,以实现各类自然资源矢量数据的共享。