武汉地区一品红扦插技术研究

以"金奖"品种一品红进行扦插试验,从扦插基质、扦插季节、激素处理等方面对武汉地区一品红扦插繁殖技术进行研究,解决武汉地区一品红种苗规模化繁殖技术问题,为一品红优质种苗规模化繁育提供科学依据。结果表明:在武汉地区进行一品红的扦插繁殖,选择4月中旬,以花泥作扦插基质,采取500mg/L"911"生根粉快沾处理穗条,扦插生根效果最好。     

大果沙棘引种扦插育苗试验研究

采用正交试验的方法研究了大果沙棘的扦插方法，齐棘92—2—5号品种用浓度为100mg/kg的2号ABT生根粉处理12h，扦插深度为12cm，可提高大果沙棘的扦插成活率达50％左右。齐棘1号经浓度为300mg／kg的2号ABT生根粉处理4h，扦插深度为10cm，扦插大果沙棘的生长量可提高2cm。大果沙棘的扦插成活率越高，则其生长量较低，成活率较低时，则生长量较高。药物处理浓度以300mg／kg，浸条时间12h，扦插深度12cm时，比对照扦插提早愈伤组织形成13天，提早生根12天，单株生根率提高3％。     

矮生一品红的引种栽培

自１９９２年起，我们前后共引进７个矮生一品红品种，分别展开了扦插，花期调控，矮化处理，病虫害防治等方面的试验，旨在探讨岭南地区露地生产矮生一品红栽培技术的一些关键问题。     

10个刺槐无性系硬枝扦插技术研究

10个刺槐无性系用不同的处理研究硬枝扦插的成活率,结果表明:IBA、NAA、A盯均能显著提高硬枝扦插和嫩枝扦插成活率.高浓度的激素处理对硬枝扦插成活有利,适宜的激素组合处理比一种激素处理效果更为明显,NAA500mg/kg和IBA500mg/kg等量混合使用效果最好.插条粗1.5～2.0cm,长15～20cm最易成活.     

巧用人工光照控制一品红花期

国庆开花的花期调节一品红是短日照花卉,只有在短日照条件下才能完成花芽分化。要使一品红提早开花,就要在自然条件是长日照的情况下制造人工短日照,即蒙上一块黑幕。为保证短日效果,黑幕遮盖时间每日约14到15小时,即每日下午5到6点起,直到第二天上午8点左右为止。黑幕处理会增高夜温,所以特别要注意夜温不能超过23℃,否则所有的努力都会白费。在夜温高于21℃的地区,最好能在夜晚完全黑暗后,将黑幕打开,帮助散热,然后在日出之前又将黑幕盖上。只要确定夜长时数达13小时,就不会影响花芽的分化发育。春节开花的花期调节要想使一品红延至春节开…     

一品红扦插繁殖技术研究

以一品红品种‘安琪’为供试材料,研究了不同扦插方式、不同扦插季节、不同激素处理对扦插繁殖的影响,结果表明,于花泥中进行嫩枝扦插,插条生根率可高达92.4%;春夏季插条生根率要比秋冬季高约20%,插后生根时间缩短10 d;100 mg/L NAA 100 mg/L IAA的激素组合处理休眠枝16 h,扦插效果最佳。     

华北香薷花期调控技术初步研究

华北香薷在野生环境下开花期在7~10月份之间,而在栽培条件下开花期在9~10月份之间,花期仅有57 d左右。为延长华北香薷在栽培条件下的花期,本研究利用短日照、植物生长调节剂GA3、NAA等处理,在5月下旬至6月中下旬对华北香蕾进行了30 d的处理。结果表明:(1)每天9 h的短日照可以促进华北香蕾花芽分化和花蕾形成,使其始花期提前至7月20日,花期长达97 d;(2)100 mg/L的赤霉素处理,可以使华北香薷始花期提前至8月12日,花期长达78 d;(3)300 mg/L的萘乙酸处理,可以使华北香薷始花期提前至8月15日,并推迟终花期至11月5日,花期长达80 d。     

不同生长调节剂对日本紫珠嫩枝扦插生根效果的影响

研究不同生长调节剂对日本紫珠嫩枝插穗生根的影响，为日本紫珠无性繁育提供技术参考。采用速蘸法，选用IBA-K、NAA-Na、DA6、IAA等4种生长调节剂，每种生长调节剂分别设1500、3000、4500mg/kg 3个浓度水平，以清水为对照。结果表明：除DA6 3000mg/kg、IAA1500mg/kg处理差异不显著外，其他均达到了极显著的水平。其中：IBA-K 4500mg/kg、NAANa 4500mg/kg两种处理的一级侧根总数、长度>5cm一级侧根数最多，分别提高了182.94%、140.33%和226.58%、186.05%。分析认为：IBA-K 4500mg/kg和NAA-Na 4500mg/kg速蘸法是提高日本紫珠嫩枝扦插效果的有效方法。     

一品红盆栽养护经验谈

一品红,又名为圣诞花(台湾名为圣诞红),是著名的在圣诞节用来摆设的红色花卉。一品红花期从十二月可持续至来年的二月,花期时正值圣诞、元旦、春节期间,非常适合节日的喜庆气氛,符合我国人民审美要求,消费群体大,可用来装点宾馆、会场等公共场所。一、繁殖培育一品红繁殖以扦插为主。用老枝、嫩枝均可扦插,但枝条过嫩则难以成活。一般多在2至3月间选     

龙脑樟树快繁育苗技术的研究与应用

研究表明，选用插穗长6—8cm、粗0．2—0．5cm的优树萌条及半木质化的嫩枝，在春、夏、秋3季扦插，在插前土壤采用0．5％KMnO4液消毒，插穗采用1000mg/kg IBA或50mg/kgABT溶液处理，扦插后覆盖遮荫网，保持棚内相对湿度85％-95％，加强肥水、苗圃田间管理等配套技术，一般25—30d长出愈合组织产生新根，60d后新根达3-5cm时即可移栽。幼苗成活率一般为80％-85％，最高达90％以上。该技术扦插育苗，不仅成活率高，幼苗生长整齐，成本低，经济适用，操作简单;而且后代个体遗传性状稳定，为龙脑樟树快速育苗开辟了新途径。     

敦化林区森林土壤调查

本文对敦化林区范围内的土壤情况进行了调查，确定了林区的土壤类型，提出了今后林业经营的方向。     

Extent,pattern, and multifunctionality of treed habitats on farms in Vermont,USA

Agroecosystems can serve as multifunctional landscapes when treed habitats such as woodlots, hedgerows, riparian buffers, windbreaks, and orchards, are conserved on farms. We investigated the extent, pattern, and multifunctionality of on-farm treed habitats for 16 Vermont farms in the Lamoille watershed of the Lake Champlain Basin. The site was selected because the land use pattern is representative of the region, containing a mixture of agriculture and forest in different habitat types. We used a GIS-based approach to delineate treed habitats on farms and conducted semi-structured interviews with farmers to explore their perception of the functions of treed habitats. Through an evaluation of the relationship between farm characteristics and spatial attributes of treed habitats, we found farm size to be an important variable. Larger farms had more land in treed habitats, while the pattern of these habitats was more complex on smaller farms. Average elevation of the farm, an indicator of biophysical conditions, was a stronger predictor of the extent of treed habitats than farm characteristics. From interviews, we found that farmers benefited from alternative forest products, both for direct consumption and sale, including firewood, timber, maple sugar, edible fruits and nuts, and wood crafts. Most farmers also recognized cultural and ecological functions provided by treed habitats. These results have implications for developing policies to promote the conservation of treed habitats, considering the preferences of the landowner or farmer.     

贵州兴义市万峰林生物多样性调查

本文对贵州省兴义市的万峰林进行了生物多样性的介绍，其特点为古生物多样性及特有性特别突出，现存生物中特有性、多样性丰富，动植物种高达1445种，国家珍稀动物和植物种类多，植物资源中具有多用途的特点，是生物遗产较为丰富和独具特色的区域。     

经营杠杆以技术支持为支点访芬兰太尔(中国)人造板树脂高级技术服务经理Patrick Anathony

全球胶粘和贴面产品技术的领导者,上世纪80年代,开始了与中国林产工业的合作,中国的重要战略地位,集团总部专门成立了“中国推动委员会”一个有百年历史的国际化公司,拥有独特的企业文化和不变的价值观。     

Landslide densities associated with rainfall,stand age,and topography on forested landscapes,southwestern Washington,USA

Elevated landslide rates in forested landscapes can adversely impact aquatic habitat and water quality and remove and/or degrade soil resources required for forest regeneration. As a result, understanding the associations between management actions, natural factors, and landslide rates is important information needed for land managers. An unusual and powerful storm in early December, 2007, caused record flooding and thousands of landslides across southwest Washington and northwest Oregon, USA, and provided a rare opportunity to examine the effects of both natural factors and forest management practices on landslide density. Landslide inventory data were collected from both aerial photos and systematic field surveys to provide a broad survey database that was used to develop estimates of landslide density and to examine associations between landslide density, precipitation, topography, and forest stand age across a 152,000 ha forested landscape in the Willapa Hills, Washington. We estimated the probability of detecting landslides on aerial photos for six strata defined by forest stand age and a broad range of rainfall intensity, expressed as percent of the 100-year, 24-h, maximum rainfall. Key findings are that landslide detection probability decreased with increasing stand age, but was similar across rainfall intensities. The overall fraction of field-detected landslides that were not detected on 1:12,000-scale aerial photos was 39%. Very few landslides occurred in the 0–100% of 100-year rainfall category, regardless of stand age or slope gradient class. At higher rainfall intensities, significantly higher landslide densities occurred on steep slopes (>70% gradient) compared to lower gradient slopes, as expected. Above ∼150% of 100-year rainfall, the density of landslides was ∼2–3 times larger in the 0–5 and 6–10 year stand age categories than in the 11–20, 21–30, 31–40, and 41+ categories. The effect of stand age was strongest at the highest rainfall intensities. Our results demonstrate that ground-based landslide inventory data are required in order to correct for detection bias from aerial photos, develop reasonable estimates of landslide density across environmental gradients such as rainfall magnitude and topography, and make unbiased interpretations of relationships between forest management associations and landslide occurrence.     

草乌、黄芩、重楼、党参仿生态栽培试验研究

为探索中草药在人工栽培条件下的药材产量、品质和疗效。在双柏县雨龙白竹山半郁闭核桃幼林内,对草乌(Aconitum episocopaleLe′vl)、滇黄芩(Scutellria amoenaC.H.Wringht)、重楼(Paris polyphllaSmith Var.yunnananensis(Franch)Hand-Mazz)、党参(Codonopsis pilosula(Franch)Nannf)4种中草药进行仿生人工栽培试验。结果认为药用根年增重率为:草乌113%、黄芩133%、重楼9%、党参131%。栽培措施对品质的影响为:以P3E1为草乌适宜栽培措施,以A4B4C4为重楼适宜措施,而对黄芩、党参的品质不影响。     

几种对蜀柏毒蛾核型多角体病毒增效的添加剂研究

蜀柏毒蛾(Parocneria orientia Chao)是四川省森林第一大食叶害虫,近年来每年都以较大面积的发生,严重威胁长江中上游柏木(Cupressus funebris Endl.)防护林的建设成果.用蜀柏毒蛾核型多角体病毒(Parocneria orientia Nulcear Polyhedrosis Virus,简称PoNPV)防治蜀柏毒蛾危害是我省蜀柏毒蛾生物防治的主要手段,但由于PoNPV产量的限制,使我省蜀柏毒蛾生物防治的发展受到制约.荧光增白剂Tinopal LPW、VBL、灭幼脲等作为增效剂可显著提高昆虫病毒的毒力,达到增效的作用~([1-5]),但利用荧光增白剂VBL、灭幼脲和敌百虫作为蜀柏毒蛾核型多角体病毒增效剂未见报道.