查询词典 Robinia pseudoacacia

Ginkgo is more drought tolerant,and maintain relatively higher Pn under drought;Robinia pseudoacacia is less drought tolerant,and Pn decrease greatly under stress;Ailanthus altissima is placed in the middle.

耐旱能力较强的银杏在干旱胁迫下维持较高的光合作用；刺槐的抗旱能力最弱，光合速率下降幅度最大，臭椿居中。

At one time, we emphasized the solar radiation transfer mechanics. To advance the estimation precision, in this paper, we classed land cover into four layer, canopy of Robinia pseudoacacia L ,top of Melilotus albus Desr,bottome of Melilotus albus Desr and layer of soil, separately estimated their fluxes of moisture, heat and CO2 ,actualized the separated simulation for each composement in soil-vegetation-atmosphere contimuum.

同时，本次研究强调了太阳辐射在冠层间的辐射传输机制，为了提高估算精度，本文把地表覆盖分为刺槐冠层，草木樨上层、草木樨下层及土壤层四个层面来分别估算其水热及CO2通量，做到了土壤-植被-大气连续体能量及物质通量的分离模拟。

At last,We carry out stability asssessment about the vegetation in virtue of the model builded in this plot.We calculate the vegetation's ecological water requirement on May 2004: canopy of Robinia pseudoacacia L require 5.2mm, Top of Melilotus albus Desr require 32.2mm, Bottome of Melilotus albus Desr require 8.6mm, Layer of soil require 17.6mm, totalize 63.6mm,Which more 22.33 mm than the contemporaneous rainfull 41.27mm.

最后通过本次研究构建的模型对项目区植被进行了稳定性评价，计算出2004年5月份复合植被的生态需水量，分别为刺槐冠层5.2mm，草木樨上层32.2mm，草木樨下层8.6mm，土壤蒸发17.6mm，总计63.6mm，这个结果比当月的多年平均(1980-2002年)降雨量41.27mm多出了22.33mm.6月初白花草木樨收割以后，次生茬生长缓慢，我们假设草木樨没有被收割，分别计算了6月和7月的生态需水量，6月份生态需水为85.64mm，7月份为78.41mm，发现6月份水分亏缺依然严重，7月份降雨完全可以满足复合植被的蒸散需求。

The Parthenolecanium corni Bouche has the certain degree difference between two kind of host plants population(Fraxinus chinensis Raxb, Robinia pseudoacacia Linn ). This kind of difference and biology habit and host plant related.

可能是由于寄主营养条件及寄主内部不同结构所形成的小环境差异对扁平球坚蚧不同种群间遗传变异起到了重要作用。

In order to provide theoretical reference to the burl's directional cultivation and utilization research was done on Populus tomentosa,Salix matsudana and Robinia pseudoacacia,and the pH value, buffering capacity of acid and alkaline,curing time of UF of various species of the normal wood and the burl wood were compared.

为了给瘤材的定向培育和合理加工利用提供科学依据，以自然生长的、带有树瘤的毛白杨、旱柳、洋槐为试验材料，对各树种的正常材和瘤材的pH值、酸碱缓冲容量、与脲醛树脂胶固化时间等指标，进行对比研究。

The sixteen plants are firstly divided into six types according to evaluation grades and subject function statistical method:the first type is Cajanus cajan and Crotalaria mucronata,the best adaptability ,which can be used pioneer plant or constructive species; the second type is Cynodon dactylon,the better adaptability, which can be used constructive species ;the third type is Eragrostis curvula, Paspalam notatum,which can be used constructive species on rotten rock slope ; the forth type is kummerowia striata,Lotus corniculatus and Vitex negundo.The adaptability is centered,and can be used protection species and auxiliary species;the fifth type is Robinia pseudoacacia,Eremochloa ophiuroides,Vitex negundo,Lespedeza formosa,Leucaena leucocephala,Desmodium sequax, Rhus chinne- nsis,which can't be plant singly and be used accessory species;the sixth is Trifolium repens,which can be used pioneer plant.

根据评价边坡防护植物适应性的十个重要指标，首次运用隶属函数和聚类分析方法，对各供试植物的边坡适应性综合排序并分为六类：第一类为木豆和猪屎豆，边坡适应性最强，适宜作为先锋植物和建群种；第二类为狗牙根，边坡适应性强，适宜与豆科植物混播，作为建群种；第三类为弯叶画眉草和百喜草，边坡适应性较强，适宜与豆科植物混播，作为风化岩边坡的建群种；第四类为鸡眼草、百脉根和马棘，边坡适应性中等，适宜作为保护种与伴生种；第五类为刺槐、假俭草、荆条、美丽胡枝子、银合欢、波叶山蚂蝗和盐肤木，边坡适应性较差，不宜单独在边坡上种植，最好与速生型豆科草本混播，作为边坡防护植物群落的辅助植物；第六类为白三叶，边坡适应性最差，但因其出苗率高、生长速度快，作为先锋植物，起到前期覆盖坡面的作用。

There were only 94 vascular plant species, belonging to 50 family and 75 genera. The dominant species in the communities were deciduous broadleaf species Liquidambar formosana, Robinia pseudoacacia, Ailanthus altissima, Acer buergerianum, and Celtis sinensis, evergreen broadleaf species Cinnamomum camphora and Elaeocarpus glabripetalus, and Phyllostachys heterocycla. Robinia pseudoacacia+Cinnamomum camphora community had the highest Shannon-Wiener index (1757) and Phyllostachys heterocycla+Acer buergerianum community had the highest Simpson index (0163), but no consistency was observed between the curves of H and D. For vertical structure, most communities had no significant understory stratification.

结果表明：辰山植物区系以泛热带和北温带占优势，具有典型亚热带和温带成分交汇和南北植物分布交错特征；但保育区内种类单一，维管束植物仅有49科69属94种；主要群落是以枫香、刺槐、臭椿、三角枫和朴树等为优势树种的落叶阔叶林，以香樟和秃瓣杜英等为优势树种的常绿阔叶林，以及毛竹林；物种多样性普遍较低，Shannon-Wiener多样性指数最高为刺槐+香樟群落（1.757），Simpson均匀度指数最高值为毛竹+三角枫群落（0.163）；多样性指数曲线和均匀度指数曲线不具有一致性的变化趋势；多数群落垂直结构中无明显林下分层现象；演替前期的落叶乔木种群后续个体不足。

In chapter 4, the restoration and rehabilitation technology of multiple functional forest system were studied. Firstly, it was expounded that we should restore and rehabilitate watershed protection forest in source of rivers, in catchment areas of small watersheds and around reservoirs, which includes protecting the present natural forests and planting watershed protection forests in the non-forest land. The main afforestation models comprises "Cupressus funebris + Alnus cremastogyne or Robinia pseudoacacia}","Pinus massoniana + Camellia oleifera (or Robinia pseudoacacia","Populus + Robinia pseudoacacia ", etc.

首先阐述了应在河流源头、小流域集水区和水库周围恢复和重建水源涵养林，这包括保护好现有天然林和在无林地营造水源涵养林，主要林种组合模式有&柏木＋梢木（或刺槐丫'／'马尾松＋油茶&、&杨树＋刺槐&等；其次着重论述了坡地水土保持林体系的重建技术，这包括工业原附、经济林、薪炭林、混农林业和退耕还草还牧等的经营和 A 建设技术；接着简要介绍了林牧业产业化途径。

In order to explain clearly the variation status of embryo from tetrapoid Robinia pseudoacacia and fully use the variation resource initiated in the sexual reproduction of TRP in the further improvement of TRP, the classification and vitalities of seed embryos from tetraploid Robinia pseudoacacia were studied. The main results are as follow. According to the cotyledon number, color and plumpness, the seed embryos of TRP could be divided into 5 types: YVT (yellow, very replete,2 cotyledons), YMT( yellow, more replete,3 cotyledons ), YRF ( yellow, replete,4 cotyledons ), GNT ( green, no-replete, 2 cotyledons ) and WNT ( white, no-replete, 2 cotyledons ).

为了阐明刺槐同源四倍体种子胚变异状况及充分利用刺槐同源四倍体有性过程创造的变异资源对四倍体刺槐进行遗传改良，研究了刺槐同源四倍体种子胚类型及其生活力特征，主要结论如下：刺槐同源四倍体种子胚按照子叶数量、颜色及饱满程度，可以划分出5个类型：黄二、黄三、黄四、绿二及白二，所有类型种子胚混合平均单胚重量接近二倍体的1/2。

The results indicate that:(1)Compare with the comparion, the soil physics character are improved after vegetation restortion , the soil unit weight in cyclobalanopsis glauca, Pinus elliottii, Robinia pseudoacacia , mixed forest and fire slash shrub separatly are 1.525g/cm~3, 1.426 g/cm~3, 1.625 g/cm~3, 1.482 g/cm~3, 1.423 g/cm~3. We can find the soil unit weight in other forest all bigger than the comparion (1.580 g/cm~3) except Robinia pseudoacacia .All these mean forest soil is looser and better capacity for aerated and dank.

结果表明：(1)植被恢复后林地土壤物理性质有良好的改进，青冈、湿地松、刺槐、混交林、火烧迹地灌丛容重分别为：1.525g/cm~3、1.426g/cm~3、1.625g/cm~3、1.482g/cm~3、1.423g/cm~3，除刺槐外其他林地均低于对照(1.580g/cm~3)，上述几种林分的孔隙度分别为：45.872%、51.956%、44.093%、50.485%、55.648%、47.228%，说明林地内土壤较对照更为疏松、通气透水能力更强，更有利于土壤微生物的活动，为研究区土壤肥力的提高奠定了基础。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。