larch相关论文
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The variation of nutrient concentration in the rhizosphere of larch and ash in mixed and monoculture
Soil samples were taken from rhizosphere zone and off-rhizosphere zoneofash (Fraxinus mandshurica Rupr.) and larch (Lari......
The comparison of strength property between kraft pulp ( KP ) and Alkaline Sulfite-Anthraquinone (AS-AQ) pulp for thicke......
With the self-made pyrolysis equipment in miniature,we experimented in different pyrolysis conditions to get different p......
Climate change evidence in tree growth and stand productivity at the upper treeline ecotone in the P
Background:Recent warming is affecting species composition and species areal distribution of many regions.However, altho......
Quantitative dynamics on stimulating regeneration and sowing seedlings of Larix gmelinii in Daxing&#
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
The variation of nutrient concentration in the rhizosphere of larch and ash in mixed and monoculture
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Activities of some defense proteins associated with age or plant family in larch needles of Larix ol
Defence proteins are a kind of chemical defence compounds. They play a key role in plant restraining biotic and abiotic ......
Environmental load of solid wood floor production from larch grown at different planting densities b
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
为了提高落叶松的表面润湿性，采用N2射流低温等离子体对落叶松表面进行处理。针对处理时间和处理高度两个因素进行单因素试验设计。......
在我国林业种植领域,落叶松树是一种比较常见的树种,本文从阐述落叶松的种植技术入手,进一步分析了松树种植常见病虫害,最后对落叶......
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通过对落叶松人工林经营技术的论述，提出了提高落叶松人工林林分质量的有效措施。...
自1997年太原市在娄烦县汾河林场细米沟发现落叶松鞘蛾以来,至今为害面积已达20 00hm2,2002年春季采用烟剂对为害严重的区域进行了......
A series of drying tests on Larch Lumber and a theoretical analysis led to the follow-ing conclusions:1.Steaming pretrea......
A series of drying tests on Larch Lumber and a theoretical analysis led to the follow-ing conclusions:1.Steaming pretrea......
The nucleopolyhedrosis virust(NPV)of larch casebearer(Dendrolimus superans)is inquadrangle or irregular form. It’s diam......
Growth of stand average DBH is discussed bassed on relationship between standgrowth and stand density.Growth equation of......
By means of calorimetry measurement,the caloric values of various components,the standing crop of energy,not energy prod......
Population increase of Larch casebearer(C. dahurica)were controlled by compre-hensive factors.Spring wind caused 27％ of l......
THE CHARACTERS AND EFFECTS OF AVAILABLE PHOSPHORUS IN DAHURIAN LARCH-MANCHURICA ASH MIXED SEEDLING S
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THE CHARACTERS AND EFFECTS OF AVAILABLE PHOSPHORUS IN DAHURIAN LARCH-MANCHURICA ASH MIXED SEEDLING S
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CAUSES OF OUTBREAK OF THE LARCH CATERPILLAR (Dendrolimus superans Butler) IN DAXINGAN MOUNTAIN AND I
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在立地条件一致的前提下 ,研究了落叶松人工林土壤养分含量的年动态变化趋势。结果表明 :7～ 8月份是纯林土壤养分急剧变化的时期 ,......
介绍了黑龙江省落叶松常见病虫害的种类以及防止各类病虫害发生所应采取的营造林措施....
结合落叶松的生物学特性和黑龙江省克山县的自然条件,介绍了在该地区容器育苗培养落叶松的技术,并对育苗过程中的病虫害防治及田问......
以牡丹江林区绥阳林业局二道岗子林场落叶松人工林为调查对象,以优势木对比法为依据,确定了落叶松人工林优树选择的标准为：胸径、树......
落叶松属寒温带及温带树种,适宜生长于海拔300~1300m不同环境地带,耐寒性极强,在零下五十摄氏度的条件下也能正常生长,因此其成为......
落叶松作为我国主要木材树种之一,其木材质量好、耐腐蚀以及树种生长迅速、保持水土,适合大规模的造林造福当地经济。苗期是落叶松......
本文对不同密度落叶松人工林的干形进行研究，结果表明：林分密度对干形具有较大影响，当经营密度〉750彬hm^2时，林木干形最优，削度最小。......
落叶松木材有较强的耐腐、抗压与抗弯曲性能,坚实厚重,属于应用较广的重要用材,也是极受欢迎的园林绿化树种。同时,落叶松抗风力强......
着重探讨了人工兴安落叶松林,在不同密度情况下的不同收获量,最佳造林密度下的最佳收获量最大,但是,最佳密度在不同的地理环境有所......
1986—1989年对落叶松落叶病测报技术进行了系统研究,建立了落叶病测报管理决策支持系统。本系统可预测该病测报因子当年值;继而对......
落叶松落叶病、枯梢病、褐现、兴安落叶松鞘蛾、落叶松球蚜、大蚜同为落叶松冠层的主要病虫审，但各具不同的生态位。不同害虫（包括虫......
为探讨落叶松杂种优势,选出生长量高的杂交组合,对设在黑龙江省林口县的23年生63个落叶松家系子代测定林木胸径生长并进行了分析.......
分析了球果花蝇的危害与落叶松挥发性物质的组成、变化的关系。落叶松球果与枝叶的挥发性物质主要为萜烯类，其中以α－蒎烯、β－罗勒烯......
以华北落叶松为原料,采用闪式提取技术对落叶松中的阿拉伯半乳聚糖进行提取,在单因素实验的基础上,利用响应面法对闪提工艺进行优......
The primary purpose of fertilization in nursery soils is to assure production ofhigh—quality planting stock. Therefore,......
The primary purpose of fertilization in nursery soils is to assure production ofhigh—quality planting stock. Therefore,......
Growth and yield models were developed for individual tress and stands based on336 temporary plots with 405 stem analysi......
Based on the main characteristies of growth,ohenology and resistance at both seed-ling stage (one year old) and sampling......
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The resin content in larch wood is usually determined by the traditionalBenzene-Alcohol Extract Method(BAEM).In order to......
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