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.     

浙江省重点公益林松类生物量模型研究

根据浙江省森林群落和树种分布特点,在浙江省200万hm^2重点公益林范围内,按气候区、林分类型、林龄组成、立地条件、林分组成等设置松类树种（包括马尾松、黄山松、湿地松、华南松和火炬松）典型样地122个,实测标准木255株。通过相关分析表明,树干干重、木材干重、皮干重、枝干重、冠干重、根干重与胸径和树高的相关系数较大,其冠干重、枝干重、叶干重则与胸径和树高以及枝下高有较大的相关系数,从变量得到的简洁性和准确性考虑,经不同模型的拟合和检验,确定了松类生物量各器官的独立模型,总量、木材、树皮、树根、树干的模型结构为W=c1D^c2H^c3,树叶、树枝、树冠的模型结构为W=c1D^c2L^c3;拟合了浙江省重点公益林松类生物量各器官及总量的独立模型和相容性模型,经检验,各模型均具有较好的拟合精度和预估水平,样本总体预估精度指旨标（P％）在多数分量中以相容性模型最高,而且相对误差绝对值指标（E2％）最小,总量、木材,树干、树皮的预估精度超过了独立模型,其他分量仍保持了独立模型的水平;而且相对误差绝对值均略高于或等于独立模型。     

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.     

浙江庆元县林权管理现状分析与思考

开展林权制度改革,促进森林资源流转,将潜在的资源优势转变为经济优势,实现林业可持续发展是林业建设长期奋斗的目标;而规范林权管理,则是巩固林权制度改革成果的重要保证。如何建立科学、长效的林权管理机制,提高林业管理质量,已是政府部门亟需解决的问题,同时也是建立现代林业制度中的一项重要内容。通过分析庆元县的林权管理现状及存在的问题,提出今后林权管理的对策。     

桂东县集体林权制度改革的探讨

集体林权制度改革是现代林业建设的一项重要内容。通过对桂东县集体林权现状以及现代林业建设所面临的林权问题的分析和论证,从完善森林分类经营,明晰林地、林木权属,建立林农自主经营机制等方面,提出桂东县集体林权制度改革的总体思路和具体措施,为南方集体林区集体林权制度改革提供参考。     

集体林权制度改革后的林业有害生物防治对策

分析了集体林权制度改革的形势、集体林权制度改革对林业有害生物防治工作的促进作用以及林业有害生物的发生特点,提出了防治的对策。     

莆田市集体林权制度改革与森林资源保护管理

随着集体林权制度改革不断深入,有效地保护了森林资源,促进了林业发展,但也对现行森林资源管理制度提出新的挑战、新的要求,需要探索建立与林改后落实处置权相适应的森林资源管理制度。为此提出了构建有效的森林资源保护体系、新型的林业合作经营体系和合理的林业行政执法体系,探索林木采伐限额管理新路子等对策措施。     

南方集体林区林权制度改革研究

南方集体林区林权制度改革是一件集自然、社会和经济发展为一体的系统工程。文章总结了我国历次集体林权制度改革的经验教训,指出了本次集体林区林权制度改革的重点与技术路线,并提出了检验集体林权制度改革的成败标准。     

规范森林资源流转完善林改配套措施

调查抚州市林改前后的森林资源流转现状,分析存在的问题,为今后规范森林资源流转和完善林改配套措施提出若干建议.     

集体林权制度改革的对策探讨

改革集体林权制度是解放林业生产力,增强林业活力的重要措施;是调整林业生产关系,进一步明晰林业产权,落实林业经营权,确保农民处置权的有效途径。通过改革集体林权制度,能充分调动各社会主体投资发展林业积极性,是我国林业发展的必经之路。     

浅谈完善三亚市集体林权制度综合配套改革

在三亚市集体林权制度主体改革基本完成后,针对当前林权流转、采伐管理、林业产业组织方式、科技支撑等机制不适应现代林业发展需要等问题,指出了林改综合配套改革的重要性,进而提出了林权主体改革后综合配套改革的想法和建议.     

学会组织努力在"科技服务林改"行动中发挥积极作用

在"科技服务林改行动"中发挥积极作用,是林业发展进入新的历史时期对各级林学会组织的必然要求.本文分析了科技服务林改的重要意义,探索了学会服务林改的有效途径和保障措施.     

基于罗平、景谷和腾冲3县的云南省集体林权制度改革绩效评价

以腾冲、罗平和景谷3县集体林权制度改革为例,从省和县尺度上对林改所产生的森林资源增长、林业经济增长、农户收入增长、林业劳动力吸收与转移、林区农村林业矛盾化解等方面的积极绩效进行评价,认为集体林权制度改革初步实现了资源增长、农民增收、生态良好和林区和谐的目标.并提出了后续改革的方向和目标.