有效面积

From the tests,we have obtained some structural variant features related with salt resistance and demonstrated the successful introduction of Rhizophora apicularta DNA into tomato.This thesis contains two parts. In the first part,the morphological and anatomical structures of the leaves were investigated. As to the morphology,some difference between control and transformed tomato were found. The leaf dimensions of the transformed tomato with unextended leaves were smaller than that of control. These structure changes should help to decrease the evaporation of water effectively and release the physiological drought resulted from saline.

本实验分两部分：第一部分、对转化番茄的形态及细胞显微结构进行观察与分析，实验表明转化番茄形态与对照相比有明显的变化，其叶面积变小，叶形收拢，这种结构可有效地减少水分的蒸发，缓解由盐胁产生的生理干旱；组织解剖结构结果显示，耐盐番茄在细胞结构上发生了明显的变异：其气孔器倾向下陷，表皮毛增多，叶脉微管组织不发达，微管束周围出现增多的贮水细胞，叶缘及其它部位表面分化出大型的多细胞分泌型结构，这些结构与转化番茄后代较强的耐盐能力有关。

Hebei Scott 1, with a total area of 1500 acres, 250 million yuan in total assets slaughter 50,000 pigs, 100,000 Pig merchandise, the company owned pig farms, using the international advanced assembly line production process, advanced equipment, strong technical force, pig breeding methods using BLUP evaluation, the best genes to make effective use of accelerated Breeding improve, the company famous National Chair ZHAO Shu-pig breeding expert Professor Lv Zhiqiang Canton researchers and technical advisers for all the year round.

河北裕丰实业股份有限公司是从事高科技农牧业和农木产品加工业的大型上市公司，其下属京安分公司位于河北省安平县，拥有种猪场8个，种住测定场1个，商品猪场4个，中比合资*河北斯格种猪有限公司1个，总占地面积1500亩，资产总值2.5亿元年出栏种猪5万头，商品猪10万头，公司所属猪场，采用国际先进的流水线生产工艺流程，设备先进，技术力量雄厚，种猪采用BLUP方法进行育种评估，使最佳基因得到有效利用，加速了品种的选育提高，公司特聘全国著名的养猪育种专家赵书广研究员和吕志强教授为常年技术顾问。

The choiceness varieties of Canarium album were tested in three different places of Guangdong. The study researched the 3-4a trials after engrafting, the results were as follows:(1) The results of variance anaylsis indicated that there were highly significant differences in yield per plant and yield per crown projection area among clones, and the height, stem diameter and crown side were highly significant in some test sites. It showed that genetic diversity existed in yield per plant among clones, and selecting high yield clones were effective.

在高州市大坡镇、古丁镇以及茂名市八一林场三个试点开展橄榄优良品系扩大试验，嫁接后第3年及4年的结实及生长结果如下：（1）方差分析结果，无性系间单株产果量、单位树冠投影面积产果量均达极显著差异水平，树高、径粗和冠幅在有的试点达极显著差异、有的试点无显著差异，表明无性系间结实存在着真实的遗传差异，通过无性系测定选择的高产无性系有效。

Ciliata var. pubescens had the higher utilization efficiency on weak light. The results suggested that the control of soil water content and irradiance might help to promote the growth of T. ciliata var. pubescens.

在遮荫条件下，毛红椿苗木通过增大叶面积、提高叶绿素含量有效地利用较弱的光辐射，形成适应遮荫条件的生态生存对策。

Our country's deserts mainly lie in arid and semiarid areas, mostly with scarce precipitation and lack of water resource, neither natural vegetation with relatively strong drought-resistance capability nor plantation, like diversifolious poplar, dryland willow, shrubby sand willow, saxoul and Hedysarum mongolicum Turcz,etc., can be protected effectively, this leads to desertification area expansion and frequent sand storm, which seriously affect people's work and life.

我国沙漠多处于干旱和半干旱地区，绝大部分地区降水稀少，水资源缺乏，无论是具有较强抗旱能力的天然植被，还是人造林如胡杨、旱柳，灌木类沙柳、梭梭、杨柴等都得不到有效保护，导致沙化面积扩大，沙尘暴发生频繁，给人民群众的生产生活带来严重影响。

To establish a MPLC method for the content determination of resveratrol in Polygonum cuspidatum Sieb. Et. Zucc, Analytical column SOURCE 5RPC ST 4.6/150 was used with a mixture of acetonitrile+water (30+70,volume ratio ) as mobile phase ,with a flow rate of 1ml/min and the UV detection wavelength was 306nm, The linear range was 0.6-1.6mg/ml (r=0.9919). The average recovery of prodatin was 103.0%-90.4%(RSD=7.21%). The method is convenient and accurate. Result indicated a reverse phase chromatography media based o n polystyrene/divinyl benzene has excellent resolution for resveratrol in cuspidatum. P rovide theoretical support for process development.

色谱条件采用SOURCE 5RPC ST 4.6/150预装柱，以乙腈/水(体积比30/70)溶液为流动相，流速1ml/min、检测波长为308nm，结果表明，白藜芦醇在0.6～1.6mg/ml的浓度范围内峰面积积分值与浓度的相关系数r=0.9919；所测定的虎杖饮片中白藜芦醇平均含量为0.304％，平均回收率为103.0％～90.4％；实验表明，以聚苯乙烯为基架的反相介质对于虎杖中自藜芦醇具有良好的分辨率，适合其有效成分的检测、分离，对虎杖中白藜芦醇制备的科学研究过渡到工艺开拓有很好的借鉴。

Domelike decompression can increase APDC, IFD, ELD and CSAC significantly, especially for CSAC, which is an effective way for lumbar stenosis.

弯顶形椎管扩大成形术可明显扩大腰椎管的矢径、上关节突内缘间距、椎板间距和椎管截面积，尤其是椎管截面积扩大更为明显，是一种治疗腰椎管狭窄症有效的方法。

For the purpose of environment protection and reasonable development of scale breeding, Juchao District in Anhui Province, which is situated by the middle of Chaohu Basin, was taken to be studied. The maximum waste load of farmland was estimated through the breeding numbers and respective excretive coefficients. By comparing the actual load of livestock manure with the maximum admissible load, environmental risk of actual breeding scale in each community was evaluated.

以巢湖流域内的安徽省居巢区作为研究区域，结合当地规模化养殖小区的畜禽饲养量、排污量以及有效耕地面积，对畜禽粪便的耕地最大污染负荷量进行了估算，并与当地畜禽粪便的实际负荷量进行比较，对现有养殖规模条件下的环境风险进行了评价。

Objective To study the protective action of compound agent madeup with effective ingredients of Hirudo and Rhizoma chuanxiong and Folium Ginkgo in animal ischemic cerebral infarction.Methods To mix Hirudin extracts of Folium Ginkgo and Ligustrazine according2:25:5into asepsis injection,rats local cereˉbral ischemia induced by embolism of middle cerebral arterywas used as experimental model to study the efˉfects of the compound agent and positive control drug,Nimodipine and extracts of Folium Ginkgo on cerebral infarct size and neurological deficits.Disposing the experimental data with statisticsand comparing their otherness among difˉferent groups.

目的 探讨用中药水蛭、银杏、川芎的有效成分组成的复方制剂对动物局灶脑缺血的保护作用方法将水蛭素、银杏叶提取物、川芎嗪按2∶25∶5的比例制成无菌注射液，应用鼠大脑中动脉栓塞导致缺血性脑卒中的实验模型，并用生理盐水、尼莫地平和银杏提取物作对照，观察不同药物对脑缺血面积和由缺血造成的大鼠行为障碍的影响，将实验据用统计学处理并进行组间的差异性比较。

PSE is an effective method in the treatment of hypersplenism and the embolized area should be determined according to the liver function of patients.

PSE是治疗脾功能亢进的有效办法，但应根据患者肝功能的个体差异掌握合适的栓塞面积。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。