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On mountainous sites, grade Ⅰ or Ⅱ stands including land below the crown of the secondary broadleaf forest and the Chinese-fir plantation or east-facing, shady dry land could be considered for the plantation. The transmittance of crown in the areas should be 55%~60%. One-year-old high quality seedlings above 25 cm tall and 0.25 cm in diameter near the ground-level should be used. For high-yield, field cultivation, shading facility should be considered and seedlings of taller than 15 cm and greater than 0.15 cm in diameter near the ground should be applied. The appropriate density and sunlight transmittance ought to be 30 cm×30 cm and 50%, respectively.

结果表明,利用山地种植,选择透光率为55%~60%的Ⅰ、Ⅱ类立地的残次阔叶林和杉木林冠下,或地形隐蔽、东向的山垅旱地,选用苗高25 cm以上、地径0.25 cm以上的1年生优质苗木造林;利用农田进行庇荫设施高产栽培,应选用苗高在15 cm以上、地径0.15 cm以上规格的苗木栽植,适宜栽植密度为30 cm×30 cm,遮阳透光率在50%左右。

From the point of view of geobotany, with the method of correlative factors of growth of plants, a countrywide theoretic ecological division was done for the introduction of Camptotheca acuminata and three kinds of areas of ecological preferent zone, ecological adaptive zone and ecological unadaptable zone were divided. With the theory of synecology, the characteristic on environment, constitution, life form spectrum, diversity, similarity of plots of communities were researched. Applying the method of species association, discrete distribution, indensity index, fractal geometry, etc. to research relations between the species of the communities, space distribution of Camptotheca acuminata, structure of age of Camptotheca acuminata, in different communities. Using the theories of autoecology, distibutons of seeds on land and growth of seedlings in vertical and horizontal directions, biomass of organ of Camptotheca acuminata were analyzed. On the opinions of conservation biology, the external and internal factors impressing Camptotheca acuminata were analyzed to research the mechanism of the endangered species, and with using of CTM Model, the future development direction of Camptotheca acuminata in different communities were forecasted, and. Standing on the position of resources ecology, discussing the regularity of camptothein in Camptotheca acuminata of different sites and seeding of different resources, also the the derive technics of camptothecin.

本文从地植物学的角度,运用植物生长相关因子法,对我国喜树资源的生态适宜区进行了划分,理论上确定了我国的喜树的引种栽培的最适生活区域、生态适宜区域和不适宜生活区域;从群落生态学的角度,对野生喜树所在的典型群落的群落环境、群落组成、群落生活型谱、群落的物种多样性特点、群落样地间相似性进行了研究;从种群生态学的角度,运用种间联结性、离散分布模型、聚集强度指数、分析几何等分析手段,对野生喜树所在典型群落间的种间关系、喜树的空间分布格局、年龄结构等进行了分析;从个体生态学的角度,对不同年龄组的喜树的种子的散落的垂直分布、水平分布、时间分布及种子发芽率和千里重等特点、不同种源的人工喜树苗期特点、喜树的高生长和茎生长特点、喜树的器官生物量特点进行了研究;从保护生物学的角度,对野生喜树的濒危的内部因素和外部因素进行了探讨,并运用CTM模型对不同群落中野生喜树的种群趋势进行了预测;从资源生态学的角度,对我国地理环境下喜树中喜树碱含量的地理分布规律、不同种源的喜树幼苗中喜树碱含量变化规律进行了研究,并对喜树碱的提取工艺进行了探讨。

Based on the test of 23-year and 10-year old slash pine,this papersystematically studied the effect of different thinning intensity and different densityof plantation on the wood qualities and properties.Many statistical means such asanalysis of variance and cluster analysis were used to analyze the difference of thewood qualities and properties among the different silvicultural measures.

本文分别以23年生、10年生的湿地松为实验材料,全面地研究了不同间伐强度、不同种植树密度对人工林湿地松材质材性的影响规律,并利用方差分析、聚类分析等统计手段,定量地分析了不同栽培措施之间材质、材性的差异。

Chrysanthemum is one of the most famous ornamental plants and has a long history of culture in China.Ground-cover chrysanthemum plays an important role in landscape. We had introduced chalcone synthase gene into "Mei Ai Huang".an excellent cultivar of chrysanthemum.

菊花(Dendranthema×grandiflorum kitam)是我国十大传统名花之一,具有悠久的栽培历史,其中的地被菊在园林绿化中发挥着重要的作用,本课题组已将与花色代谢有关的查尔酮合成酶基因(chalcone synthase,CHS)转入优良的地被菊品种'美矮黄'中。

Although the quality of day lily of Qingyang city is best in the whole country, the day lily is planted fragmentarily at the residence, roadside, bank of the canal, low bank of border, and district of field, and also do not form the best product region and suitable planting technology. The product region environment condition of day lily in Qingyang city was analyzed from2001 to 2005, the advantageous product regions of day lily in Qingyang city was planned, and planting technology of day lily was studied. The main result of study were as follows:First. Qingyang city belongs to dry agricultural region, its solar radiation is quite rich, but the water resources is short in all district, the agricultural production depends on the natural precipitation.

生产的黄花菜质量在全国名列前茅,但是庆阳的黄花菜多在宅旁、路边、渠岸、田边地埂等零星地进行生产,没能形成优势产区,对栽培技术研究也较少。2001年~2005年我们分析评价了庆阳市黄花菜产区环境,进行了黄花菜优势产区区划和旱作栽培技术研究,主要研究结果如下: 1 庆阳市太阳辐射比较丰富,水资源缺乏,农业生产靠天然降水,属旱作农业区,河流大部分水质较好,灌溉水源基本未受到污染。

To learn the information about the genetic background of the cultivation and wild germplasms of Platycodon grandiflorum assisting of its breeding and studies on genuine characteristics, the genetic diversity of 92 samples (including 20 cultivation and 3 wild germplasms, and 5 genetic materials) were analyzed by RAPD markers.

为了解桔梗栽培种质、野生种质的遗传背景,为桔梗育种及道地药材研究提供依据,采用RAPD方法分析了桔梗20份栽培种质、3份野生种种质及5份遗传材料共92个样品的遗传多样性。

Physiologicalmechanism of high yielding corn in the ravined valley was studied. Based on the results,the technical regime of ecologically adverse resistant and high yielding cultivation forthe corn in the ravined gully has been constructed. The major detailed techniques for theregime are ridging-ploughing in autumn and film-mulching during the thawing time inspring, adopting compact corn varieties with big ears and grains and adequately longgrowing stage, fertilizing adequately at seedtime and at jointing stage and irrigatingwith floodwater in the middle and late. The standardized techniques have also beenestablished.

&九五&期间,我们以充分发挥沟谷地的生态资源优势和育壮苗、攻大穗、增粒重的玉米高产规律为结合点,研究与明确了沟谷地高产玉米的生理机制,组建了以秋耕起垄顶凌覆膜保墒、选用紧凑型&三大&玉米品种、施足底肥重攻拔节肥、中后期洪淤补灌等四项技术为核心的沟谷地玉米生态抗逆高产栽培技术体系,制定了针对性强、技术准确、便于操作、简单易行的规范化技术。

Sabaigrass had long time for vegetative growth and required enough nutrients, so fertilization can promote growth significantly.

因此,在大田栽培管理中,要保证龙须草地的土壤含水量,在雨水过多的夏季要及时地放掉过多的积水,防止淹水现象的出现。

The carambola new lines including 62-02, 62-03, 63-01 and 64-01, which had been selected from open pollinated seedlings in Fengshan Tropical Horticultural Experiment Station, TARI, were used. The 4 new lines were compared with main cultivated variety 'Er-Lin' at 4 major carambola production areas.

本试验供试杨桃新选育品系为凤山热带园艺试验分所利用现有优良品系混合杂交育种选育而得之优良实生单株62-02,62-03,63-01,64-01等四种並与產地主要栽培品种二林种做比较,於全省四处主要產地试植。

The experiment use cucumber as materials, There were two stubble cultivation includingspring stubble and autumn stubble. Three temperature environmentwere setted upby opening back slope ,back wall and front ventilation mouth or cover of many layers ortemporary hightened temperature. Jinchun 3 was used in spring stubble and Jinyou 1 was used inautumn stubble. The experiment initially ascertained that different temperature conditions ingreenhouse influence on growth and yield of cucumber by studying different temperaturetreatments effect on atmosphere factors (air temperature, ground temperature and relativehumidity), growth, correlated physio-biochemical index and yield of cucumber, which couldprovide reasonable temperature parameters for greenhouse cucumber cultivation in our province.

本试验以黄瓜(Cucumis sativus.L)为材料,分为温室春秋两茬栽培,通过开启后坡、后墙、前侧通风口大小、多层覆盖、临时加温等手段,设置 A、B、C 三个温度环境,春茬选用品种为津春 3 号,秋茬为津优 1 号,通过研究不同温度管理方式对日光温室内气象因子(气温、地温和空气相对湿度)及黄瓜的生长、产量、相关理化指标、果实商品性、品质的影响,初步探明日光温室内不同温度管理对黄瓜生长及产量形成的影响,为我省日光温室黄瓜栽培环境控制提供合理的温度参数。

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