郑州市道路绿化植物病虫害防治策略

城市行道树种类少,病虫害严重是当前城市园林绿化中存在的共性问题,在进行郑州绿化植物病虫害现状调查分析的基础上,通过对城市道路绿化植物病虫害发生特点进行分析,找出存在的具体问题,并提出了以建设城市复合生态园林和应用生物农药为核心的防治策略,达到无公害控制城市道路绿化植物病虫害,保护城市生态系统,优化城市道路环境的目的。     

桂海高速公路主要植物病虫害调查及防治

对桂海高速公路绿化植物的病虫害进行调查和观察，提出了防治措施。     

沈海高速公路台州段主要绿化植物病虫害调查及防治对策

围绕沈海高速公路台州段主要绿化植物病虫害防治工作,通过对公路中央分隔带、路基边坡、隧道口、互通区和收费站绿化植物的调查,鉴定整理出绿化植物的病虫害共计53种,其中害虫36种,病害17种。对主要病虫害发生原因进行分析,提出相应的防治对策,为综合防治病虫害提供科学的理论依据。     

绍兴市城镇绿化主要病虫害综合治理对策

通过对绍兴市城镇绿化植物病虫害发生情况的调查分析，发现目前绍兴市城镇绿化植物病虫害发生的主要原因是绿化树种配置不合理，管理粗放，立地条件不适宜和盲目引种，提出了适地适树、加强抚育管理、加强检疫、搞好虫情监测预报和各种防治措施协调应用的综合治理对策。     

襄汾县绿化植物病虫害发生趋势与防治措施

襄汾县位于山西中南部,近年来城市绿化成效显著,但也存在一些亟需解决的问题。介绍了城市绿化植物病虫害发生趋势,分析了绿化植物病虫害严重发生的原因,提出了绿化植物病虫害防治对策。     

园林绿化植物病虫害综合防治

随着国民经济的增长,人们对生活质量的要求越来越高。绿化和美化环境成为提高生活质量的重要组成部分。近年来,我国的城镇都不同程度地开展了以绿化植物的种植、造景和管护为主的绿化、美化环境工作,但园林绿化植物常常受到病虫害的危害。在园林绿化中,人们普遍认识到,要达到绿化和美化的效果,只注重种植和造景是远远不够的,还应注重绿化植物的有效管护,进行病虫害防治。     

重视居民小区花木病虫害的防治

人们在居民小区学习、休息、活动的时间最长，居民小区绿化情况的好差直接影响着居民的日常生活，良好的绿化对居民的身心健康有很大的影响。但是，居民小区花木常因病虫害的侵染而不能正常生长，因此，小区物业管理等部门必须做好居民小区花木病虫害的防治工作。小区花木病虫害防治工作必须坚持“预防为主，综合防治”的原则，为确保小区绿化美化，必须做到以下几点：一、加强花木病虫害检疫措施。在小区绿化建设中，每年都会引进一批花卉苗木，病虫害可能随着苗木的调运而传播到小区中来。因而，调运苗木之前，应加强对各类植物的检疫，如…     

城市环境植物病虫害的发生及对策

我国在城市化迅速发展进程中，城市植被形成了园林化格局，城市环境质量明显改善，但也出现了城市中心衰退现象（高楼多绿地少），导致了环境植物病虫害的屡屡发生。大致归结如下：———城市园林绿化格局的大调整改变了原有的病虫害结构。随着近年来国外园林设计手法不断传入我国，改变了城市中绿化格局和原有的病虫种类，蛀干害虫、“五小害虫”（蚜、蚧、螨、粉虱，蓟马）和生态性枝干病害已成为城市环境植物的主要病虫害。———园林绿化植物的不合理配置加剧了病虫害的猖獗程度。害虫与其寄主在长期进化过程中形成了协同进化关系，但不…     

森林病虫害防治中的农药污染及对策

近年来，我国林业建设取得了前所未有的成就，造林绿化步伐迅速加快，生态环境开始向好的方向转变，在发展的进程中形成了大面积单纯的人工林格局，导致了林业植物病虫害的严重发生。为了遏制病虫害的蔓延，保护绿化成果，通常是采取化学和生物的方法除治森林病虫害。由于生物防治技术要求条件高，化学防治方法简单、见效快、费用低、适用对象广泛，目     

石安高速公路绿化植物病虫害调查初报

通过对石安高速公路主线段、互通区、服务区及收费站绿化植物的调查,鉴定整理出绿化植物的病虫害共计54种,其中,食叶类害虫39种,蛀干及根部害虫7种,病害8种。为综合防治病虫害提供科学的理论依据。     

观赏植物与旅游

从旅游资源开发的角度看待观赏植物花卉 ,并通过时令花卉及各地举办的花节、花卉食品、花卉类旅游纪念品三个方面论述了开发花卉旅游资源。     

Effects and mode of action of some plant extracts on certain plant parasitic nematodes

Exposure to standard solution S extract ofPunica granatum, Thymus vulgaris andArtemisia absinthium for 72 h reduced the numbers of active nematodes by 100% forMeloidogyne incognita and by 95.7%, 71.4% and 42.9% forHelicotylenchus dihystera, respectively. Exposure to S/2 dilutions for 72 h reduced nematode motility by 100%, 77.3 and 72.7% forM. incognita, and by 92.9%, 37,1%, and 37,1% forH. dihystera, respectively. As exposure to S and S/2 extracts ofCitrullus colosynthis andRicinus communis reduced nematode motility by less than 32% forM. incognita and by less than 30% forH. dihystera. WhenM. incognita andH. dihystera were transfered to water for 72h, more than 85% of the individuals resumed normal movement at all extract dilutions except S ofA. absinthium andT. vulgaris and S and S/2 ofP. granatum. However, recovery ofM. incognita was more less than that ofH. dihystera. Exposure to S extracts ofP. granatum andT. vulgaris for 30 days reduced egg-hatching ofM. incognita by 100% and by 98.7% for S/2 dilutions. Also, 98.7% reduction in the egg-hatching was obtained by S ofA. absinthium. Extracts ofC. colosynthsis andR. communis gave less egg-hatching inhibition. Acetylcholinesterase (AChE) activity was suppressed by more than 75% inH. dihystera treated with S of each ofP. granatum, T. vulgaris andA. absinthium. However, the former extract gave the highest AChE inhibition (98.7%). When nematodes were treated with oxamyl (Vydate 24%), AChE activity was suppressed by 53.3%. The other extract dilutions suppressed AChE activity by less than 50%.     

深圳市植物物种指数与本地植物指数分析

以文献调研为主,结合野外踏查,对深圳市野生植物和常见栽培植物、建成区内本地植物和外来植物进行了统计分析,得出深圳市"植物物种指数"为0.789,"本地植物指数"为0.701;还分析了深圳植物的区系特点和外来植物的应用现状。       

浅析药用植物与绿化

述叙了药用植物在园林绿化中的作用、应用方式以及品种的选择。     

Nitrogen transfer between N2-fixing plant and non-N2-fixing plant

The transfer mechanisms, calculating methods and ecological significance of nitrogen transfer between legumes and non-legumes are briefly reviewed. There are three pathways of nitrogen transfer from legumes to neighboring non-legumes: (1) the nitrogen pass in soluble form from the donor legume root into the soil solution, move by diffusion or/and mass flow to the receiver root and be taken up by the latter; (2) nitrogen pass into the soil solution as before, be taken up and transported by mycorrhizal hyphae attached to the receiver roots; (3) if mycorrhizal hyphae form connections (bridges) between the two root systems, the nitrogen could pass into the fungus within the donor root and be transported into the receiver root without ever being in the soil solution. The mechanisms of nitrogen transfer between N₂-fixing plants and non-N₂-fixing plants are reviewed in terms of indirect and direct pathways. The indirect N-transfer process is related to the release of nitrogen from legumes (donor plants), the possible interaction of this nitrogen with soil, the decomposition and mineralization of legumes and turnover of nitrogen, the nitrogen absorbing and competing abilities of the legume and the non-legume (receiver plant). The direct nitrogen transfer process is generally considered to be related to the nitrogen gradient and physiological imbalance between legumes and non-legumes, and when the donor legume lies in stressful stage (i.e. removal of shoots or attacked by insects), the nitrogen transfer can be improved significantly. The methods of determining nitrogen transfer (indirect¹⁵N-isotope dilution method and direct¹⁵N determination method) are evaluated, and their advantages and shortcomings are shown in this review. Foundation Item: This paper was funded by National Science Foundation and Doctor Foundation of China. Biography: J{upang} San-na (1970-), male. Ph. doctor, engineer in Collage of Resource and Environment. Beijing Forestry University Responsible editor: Chai Ruihai     

Nitrogen transfer between N2-fixing plant and non-N2-fixing plant

IntroductionNitrogenisanelementthatcyclesthroughanecosyst6mandneedstobepresentatacertain'minimumIeveItosust8inthatsystem.lnaninterspe-ciesconteXt,thebeneficiaIeff6ctsofN2-fixingpIantsinecosyst6ms,duetOtheirc0ntributionofnitr0gen,havebeenobservedbysucceedinggenerationsofagronomists,f0rest6rs,andecoIogists.Thein-terpIantsofN2-fixingplantsandnon-N2-fixingplantsarepraCticedtoincreasetotaIyieldandreducetheneedfOrf6Ftilizersinput,andithasbeenshownthatpartoftheassimiIatedNinthenon-N2-fixingpIa…     

跳舞草及其栽培技术

跳舞草（C. motorius（））为豆科HouttOhashi舞草属木本植物，盆栽株高可达～，地栽株高1.52m可达～。叶片多为互生三出复叶，中出大叶为22.5m长椭圆形，长约，宽～，侧出小叶倒披针8cm1.52cm形，长～，宽～。当白天气温高于22.5cm0.40.6cm℃时（在无风雨下），三出叶的两片侧叶能围绕24中出大叶旋转摆动，时快时慢，时上时下，时左时右，周而复始地运动不息，给人以一种新奇美感的享受。种子当年播种当年可以收获种子，种子播后两个月即可成株出售。笔者近年一直作栽培试验，现将其栽培技术简述如下：　播种基质准备1　　播种的基质最好…     

药用及观赏植物——金盏菊

论述了金盏菊的植物学、生物学特性及其药用、观赏、食用等价值，为金盏菊资源的开发利用提供了参考依据。     

湿地植物的选择和应用

通过借鉴、参考国内外人工湿地技术的研究成果,根据目前在人工湿地技术研究方面取得的最新工艺和数据,结合文山盘龙河的湿生植物资源与自然概况以及水质情况,将湿地植物应用于文山县盘龙河人工湿地污水处理系统的可行性研究和应用规划中.主要根据文山的实际情况有针对性地选择了工程所需湿地植物,重点介绍了表面流人工湿地在整个工程中布局和建设计划.