苗圃转让

今年顺义区苗圃绿化、美化苗木达1120多种、1．12亿株。其中油松、白皮松、华山松、雪松、桧柏、侧柏等常绿树13157亩，1650万株，占育苗总面积的23％；连翘、碧桃、榆叶梅、紫叶李、紫蔽、紫荆、月季、玫瑰、黄刺梅、黄杨、女贞等花灌木5468亩，1455万株，占育苗总面积的10％；白腊、元宝枫、栾树、国槐、银杏、合欢、龙爪槐、杜仲、千头椿、金丝柳、各种品种杨等落叶乔木37375亩，8095万株，占育苗总面积的67％。     

大丽花块根繁育和栽培技术

大丽花(Dahlia pinnata Cav)菊科，大丽花属，多年生草本，原产墨西哥，又名大丽菊、大理花、天竺牡丹、西番莲、地瓜花，具有植株粗壮、花期长、花朵硕大，品种繁多、花色鲜艳、适应性强等特点。是美化公园，布置庭院、花坛、花境以及切花陈设的较好花卉材料。大丽花为世界名花之一，目前世界约有3万多个品种，我国有500余品种。     

木棉嫁接繁育技术

木棉(Gossampinus malabarica)又名攀枝花、红棉、英雄树、烽火树,属木棉科木棉属落叶高大乔木.木棉广泛分布在我国四川、云南、贵州、广西、广东,生长在江河沿岸、山地阳坡及村边道路旁,喜光、耐高温,对土壤要求不苛刻.在四川攀枝花地区木棉树于1月-2月份开花,先花后叶,花色艳丽,有红色、金黄、淡黄色等颜色,树形高大伟岸,是优良的园林绿化树种.木棉树现是攀枝花市市花和广州市市树,在园林绿化中常作行道树、庭荫树、景园树、盆景树等.木棉经嫁接后2 a-3 a开花,嫁接苗可作盆景矮化栽培,观赏价值高.本文介绍了木棉的嫁接育苗技术.     

One compound approach combining factor-analytic model with AMMI and GGE biplot to improve multi-environment trials analysis

To improve multi-environmental trial(MET)analysis,a compound method—which combines factor analytic(FA)model with additive main effect and multiplicative interaction(AMMI)and genotype main effect plus genotype-by-environment interaction(GGE)biplot—was conducted in this study.The diameter at breast height of 36 open-pollinated(OP)families of Pinus taeda at six sites in South China was used as a raw dataset.The best linear unbiased prediction(BLUP)data of all individual trees in each site was obtained by fitting the spatial effects with the FA method from raw data.The raw data and BLUP data were analyzed and compared by using the AMMI and GGE biplot.BLUP results showed that the six sites were heterogeneous and spatial variation could be effectively fitted by spatial analysis with the FA method.AMMI analysis identified that two datasets had highly significant effects on the site,family,and their interactions,while BLUP data had a smaller residual error,but higher variation explaining ability and more credible stability than raw data.GGE biplot results revealed that raw data and BLUP data had different results in mega-environment delineation,test-environment evaluation,and genotype evaluation.In addition,BLUP data results were more reasonable due to the stronger analytical ability of the first two principal components.Our study suggests that the compound method combing the FA method with the AMMI and GGE biplot could improve the analysis result of MET data in Pinus teada as it was more reliable than direct AMMI and GGE biplot analysis on raw data.     

Review of Studies on Structural Features,Regeneration Features and Management of Natural Spruce-Fir Mixed Stand of Coniferous and Broadleaved Trees in China

Natural spruce-fir mixed stand is one of the main forest types in the world,and also has huge ecological,economic and social benefits.According to the structural characteristics and succession laws of natural spruce-fir forest,it is urgent and significant to develop scientific management measures for natural spruce-fir mixed stand in line with local conditions.The article outlined the characteristics of the distribution and structure, regeneration and succession laws of natural spruce-fir forest,and analyzed the current situation and existing problems of natural spruce-fir forest management.The following recommendations were eventually made:1) In no cutting area,all logging activities should be banned.In a restricted cutting area,the cutting intensity should be generally controlled within 15%of the stock volume before cutting.On the commodity forest management area, the appropriate cutting intensity should be determined according to the volume per hectare,determine and classification management should be implemented in accordance with the characteristics of forest,to ensure the scientific selective cutting.2) Closure for afforestation,planting and repair planting should be adopted on vegetation-intensive land,sparse shrubs covered land and harvesting slash,in order to accelerate natural regeneration.3) The in situ conservation should be conducted in nature reserves and scientific experiment stations of rare and endangered species,such as Abies chensiensis,Picea neoveitchii,Abies vuanbaoshanensis,to reduce human destruction.4) It is supposed to collect seeds in time,establish nursery,actively establish forest, expand artificial population and promote natural regeneration.     

环保杀虫装饰涂料

蚊子、苍蝇、螳螂、臭虫、蜘蛛、蚂蚁之类害虫,在家庭、工厂、办公室、医院、学校、酒店等地,随处可见,无处不入.这些昆虫不但给人们的生活带来很多烦恼,更重要的是,他们导致疾病传播,从而严重危害人们的身体健康.所以,根除害虫,改变居住环境,早已成为人们关注的问题.     

减肥即食营养大米

肥胖是一种常见的慢性疾病,它是由于生理化机能的改变而引起的体内脂肪沉积量过多,造成体重增加,导致机体发生一系列病理、生理变化的病症.肥胖症是一种全身性代谢疾病,除引起身体外形的改变外,过多的脂肪可带来物理性的负荷,还是各种疾病的"培养箱".肥胖人群平均寿命明显低于正常体重的人群,同时肥胖症还是心血管疾病、糖尿病、脂肪肝、肿瘤的温床,它是一种营养代谢性疾病.减肥首先必须从能量的摄入入手,减少热能的吸收.     

聚氯乙烯合金生产技术

当前现代化的航天、航空、汽车、机械、电子、民用建筑、化工等行业迫切要求具备很高的力学性能及耐热、耐磨、耐化学性能的材料.因此高分子材料发展的一个重要方向就是通过对现有聚合物进行物理和化学改性,使其进一步高性能化、结构化、工程化.北京化工大学研制的聚氯乙烯合金是通过挤出机的力学、化学作用及接枝、复合技术使聚氯乙烯塑料工程化,成为物理性能可与ABS相比拟的新材料.聚氯乙烯合金具有高流动性、高韧性,完全可以代替ABS注塑计算机、电视机、冰箱、照相机、仪表等外壳.聚氯乙烯合金还具有良好的耐寒性,可制作各种规格的异型材,包括门窗、上水管道等.产品市场前景好,具有很强的竞争力,有很好的经济效益和社会效益.     

Discussion on Spatial Optimization Modeling of Water Resource Conservation Forests and Management Practice of Forest Functions

According to the unification principle of system structure and system function of the Water Resource Conservation Forests,seven factors were selected from stand spatial structure,trees structure and healthy of woods,the multifunction management optimization model target was confirmed by using nonlinearity multi-objective programming approach, and the target function-stand spatial structure homogeneity index was defined to establish spatial optimization models with restraining conditions set up in diversity of stand structure and spatial structure.The spatial structure of available typical stand in the wet land area in southern Donting Lake was optimized by means of selective cutting and reinforcement planting.The results showed that the spatial structure was improved obviously and trees diversity and stand health were not weakened.It’s suggested that the established optimization model can effectively guide multifunction management,stand structure optimization and the steadiness of ecological ecosystem and it is convenient and operable in practice,and it’s very important to protect and recover ecosystem of Water Resource Conservation Forests.     

Multi-Objective Genetic Based Pore Combination Recognition

This paper proposes an automatic method of pore combination recognition,which is an important feature to hardwood recognition.After extracting edge from wood microscopic cross-section, based on area histogram of the similar circle regions,the method classifies all regions into two classes with maximum between-class variance,so as to distinguish the pore from other textures,which are similar in shapes but different in sizes.Meanwhile, second objective function about average area of closed regions is used to improve the pore segmentation performance.At last,the method uses adjacency degree of pore set to judge pore combination.The experiments demonstrate that the task of pore segmentation can be completed successfully for all kinds of pore distribution and combination,and also the correct combinations of pores are given.     

园林植物净化居室有害气体研究进展

概述了近年来有关植物净化与吸收居室有害气体的研究成果, 发现一些室内植物可以有效吸收居室有害气体, 其吸收效率与植物种类、基质、微生物等以及光照、温度等环境条件有一定关系; 分析了近年来常见的研究方法及存在的问题, 为进一步研究提出建议。     

毒饵防治中华鼢鼠技术初探

文章指出,近年来中华鼢鼠已经成为黄土丘陵区油松、樟子松人工林的大敌,它通过啃食根系致使林木死亡。并介绍了通过几年来的防治经验,证实毒饵防治是控制其危害程度的有效方法之一。     

庞泉沟保护区有毒植物区系分析

统计了庞泉沟自然保护区有毒植物的种类,对每种植物的有毒部位、垂直分布、分布地和生活型进行了总结,分析了该区有毒植物分布区类型及垂直带分布特点,并对其进行了简要介绍.     

浅谈室内有毒气体与室内花卉

现代居室装修材料多会造成室内不同程度空气污染,有害人们健康。文章根据有关资料,对有毒气体来源和危害以及室内花卉对有毒气体的吸收作用进行简单介绍。建议尽可能少用有毒装饰材料,加强室内通风换气,再辅之以室内花卉,同时建议学术界加强对有特殊环保功能植物的研究。     

庐山野生有毒植物资源调查初报

报道庐山的野生有毒植物资源,共计144种,分属于57科;并对庐山的野生有毒植物资源进行分析,就其开发利用提出建议.     

尤溪县有毒植物资源补遗

对福建省尤溪县有毒植物资源进一步调查,发现已有文献未收录的有毒植物87种（包括栽培种）,现予增补,并列出增补的有毒植物科名、学名、中文名、有毒部位、习性与毒性大小。     

苏云金杆菌敏感性菌株对苹掌舟蛾的毒效试验

用苏云金杆菌敏感性菌株摇瓶培养液,进行室内和野外的对苹掌舟蛾幼虫的毒力试验。结果表明:在室内,Bt敏感性菌株浓度与幼虫死亡机率的回归方程为Y=4.290 0 1.989 8X,r=0.954 2,与标准品比较其生物效价为3 300.62 IU.mg-1。在野外,Bt敏感性菌株效力高峰期在药后72~96h,稀释500~1 000倍液的防治效果达85.71%~89.10%,略高于DDVP。     

武当山地区野生有毒植物资源的开发利用研究

经调查,湖北武当山地区共有野生有毒维管植物71科156属206种。本文分析和讨论了它们的经济价值、在本地区的开发利用现状及存在的问题,提出了保护与开发对策。     

烟雾载药技术防治杨树食叶害虫研究初报

利用烟雾载药技术防治杨树食叶害虫,克服了因杨树树体高大等原因用常规喷药方式难以达到最佳防治效果。其中4．5%氯氰菊酯乳油,2．5%溴氰菊酯乳油(又名敌杀死)分别与柴油按1：10,1：20两种配比混合后放烟24 h,害虫校正死亡率分别达到100．00%、97．40%; 100．00%、98．27%。3．0%高渗苯氧威与柴油按1：10配比混合后放烟72 h,死亡率达到 90．40%。在生产中可大力推广,而且操作简便有效。     

采用熏蒸毒签防治蛀干害虫的调查报告

文章主要针对南海公园内杨、柳受蛀干害虫危害严重 ,而采用熏蒸毒签杀死蛀干害虫 ,保护绿化成果 ,美化南海公园环境