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tomentosaCOCA¹⁸¹⁷⁷²BNC¹⁴⁴⁶⁶⁴⁺³ 基本例句 🌏毛樱桃;毛泡桐;绒毛酢 A quantitative study on flower taxonomic characters of Populus tomentosa. 标题毛白杨花器分类性状的数量化探讨。 www.cvh.org.cn A randomized completely block design was used for the provenance trail of P. tomentosa, with3 replicates each consisting of10 plots planted with single line trees. 毛泡桐、白花泡桐种源试验采用完全随机区组设计,3次重复、10株小区,单行栽植; cnki An experiment of flood tolerance or mixed inoculation with VA-and ectomycorrhizal fungi of Populus tomentosa was carried out under field condition. 在田间条件下布置了毛白杨 VA菌根与外生菌根混合接种抗涝性试验。 dictall An experiment of making high grade coated paper with APMP from fast-growing triploid of populus tomentosa was carried out. 进行了速生材三倍体毛白杨 APMP浆配抄高档铜版纸的应用试验。 iciba Approaches of experimental ecology and physiology were used to research on effects of mycorrhizal inoculation on populus tomentosa under serious stress of soil moisture 7.4%-7.96%. 采用实验生态学及植物生理分析等方法,研究了严重土壤干旱7.4%—7.96%以及在此条件下施肥对毛白杨菌根接种效应的影响。 cnki Art base paper blended with P- RC APMP of the triploid of Populus tomentosa was investigated. 对三倍体毛白杨 P- RC APMP浆配抄铜版原纸进行了试验研究。 iciba Clones of intensive short-rotation of Populus tomentosa was screened to meet supply of raw material and need of economic development. 从已有三倍体毛白杨中筛选出更适宜超短轮伐栽培的品系,可满足造纸企业的原料供应和经济发展要求。361xs It's seedling height and breast diameter exceeded P. tomentosa34.02%and 19.94% respectively under the same condition, and it was not obvious difference with triploid P. tomentosa. 年生长量苗高、胸径分别超过同类条件下毛白杨的34.02%和19.94%,和三倍体毛白杨生长量相当。 cnki Oryzacystatin gene expressing a potential cysteine proteinase inhibitor against Coleoptera pests was introduced into Populus tomentosa by Agrobacterium mediated transformation. 通过农杆菌介导法将水稻巯基蛋白酶抑制剂基因导入毛白杨。 zidian8 The discipline of temperature variation in the internal- mat of wafer-board, which is made from triploid populous tomentosa, is studied in this article. 本文研究以速生材三倍体毛白杨为原料压制大片刨花板时的板坯内部温度变化规律。 wood The development of both elastic and plastic strains of timber surface and internal layers from fast growing plantation wood Populus tomentosa, Pinus massoniana etc. was studied. 研究了短周期工业材在干燥过程中木材表层和内部各层干缩率及弹性和塑性应变的变化规律。 chemyq The study on the explosion pulping of triploid Populus tomentosa Carr. at low pressure is aimed at broadening the application of this new fast growing poplar. 为扩大三倍体毛白杨的应用范围,该文研究了三倍体毛白杨的低压爆破制浆。 cnki Analysis and discussion are also made for the10 factors, involved in the experiments on vegetative propagation of Populus tomentosa. 同时对其中所涉及的10个试验因子,都一一作了分析与讨论。 cnki And by applying this genetic transformation system, the auxin influx carrier gene of Populus tomentosa PtAUX1 was transferred into mulberry successfully in the hope to improve its economic properties. 并应用此遗传转化系统,成功地将毛白杨生长素内运载体基因转入桑树,以期改善其经济性状。 cnki Based on the phenological phase change of Populus tomentosa in4 observation stations in Qinghai during 1987-2003, its response to climate change were analyzed. 以青海省4个农气观测站的小叶杨物候期及气候资料,分析了小叶杨物候期变化及其对气候变化的响应。 cnki In this paper, the biomass increment and the relative biomass accumulation and distribution for Populus tomentosa and its hybrids clones were studied systematically by relative growth method. 本文采用相对生长法系统地研究了毛白杨及其杂种无性系生物量增长及其各器官相对生物量的积累和分配规律; cnki In this paper,4 similarity coefficients and9 cluster methods are used to analyse26 types of Populus tomentosa Carr. and5 relative speciesinclude variety, besides,26 characters are presented. 本文采用4种相似性系数,9种不同的聚类方法分析了毛白杨种群的26个自然类型及5个近缘种和变种的26个形态性状。 cnki In this paper only the technological process of its comprehensive utilization of medicinal constituent of P. fortunei and P. tomentosa and main technical measures were introduced. 本文只报导了泡桐属白花泡桐和毛泡桐药用成分综合利用的工艺过程及其主要技术措施。 cnki It is important to study the nutrient characteristic in leaf and nutrient dynamic in forest land of triploid Populus tomentosa in order to improve the ability of plantation nutrient management. 三倍体毛白杨是我国近年来发展迅速的树种之一,研究其叶片营养特性与林地养分动态对提高人工林的营养管理水平具有重要意义。 dictall Populus tomentosa is one of important forestation trees by means of asexual propagating in our country and all over the world. 杨树是我国乃至世界上通过无性繁殖应用的主要造林树种之一。 fabiao Regenerating plants were produced from immature leaves of the triploid of Populus tomentosa by tissue culture on MS basic medium with different plant hormone. 采用毛白杨三倍体幼叶作为外植体进行组织培养,以 MS为基本培养基获得了再生植株。 cnki Results showed that growth of clonal triploid of Populus tomentosa had significant stage. Growth process appeared the rule of slow fast slow and existed obvious fast growing period. 结果表明,三倍体毛白杨无性系生长发育具有明显的阶段性,生长进程呈现慢-快-慢的规律,并存在明显的速生期。 cnki Studies on the Pulping Properties of Triploid Clones of Populus tomentosa Carr. 三倍体毛白杨纸浆材制浆特性研究。 kuenglish The paper has analyzed the growth adaptability of10 varieties of triploid Populus tomentosa of pulpwood forest afforested in Shiyanghe in 2001. 本文分析了2001年作为纸浆林发展引种的10个三倍体毛白杨系号在石羊河流域造林的生长适应性。 dictall The result showed that:1. The activities of POD enzyme and PPO enzyme in the leaves and phloem of P. tomentosa was tested Using ultraviolet spectrophotometry. 用分光光度法对毛白杨叶片、韧皮部内 POD、 PPO酶活性进行了测定,结果表明 POD酶无论是在叶部还是韧皮部都与桑天牛危害程度呈正相关。 cnki The soluble protein content in chimera was higher than that in P. tomentosa, and their changes were reverse on the 15th day. 可溶性蛋白含量嵌合体总体比毛白杨高,且两者在第15天变化相反。 www.cnak.net.cn There is acidification on the rhizosphere of Triploid populus tomentosa in certain degree. 三倍体毛白杨根际存在一定的酸化现象。 cnki We analyzed the leaf nutrition and the soil nutrition return relations of triploid Populus tomentosa, and established the leaf nutrition and the soil nutrition return forecast model. 分析了三倍体毛白杨叶片营养与土壤营养的回归关系,建立起叶片营养与土壤营养的回归预测模型。 fabiao |