甜瓜小拱棚栽培品种比较试验

对6个厚皮甜瓜品种在拱棚栽培条件下的适应性和产量、品质表现进行了比较研究。结果表明，古拉巴和玉金香2个品种兼具优质、丰产、抗病、抗逆性强等优良性状，具有拱棚种植的开发潜力，可作主栽品种推广。伊丽莎白是仅次于古拉巴和玉金香的早熟优良品种，可作为拱棚栽培的搭配品种使用。     

区域农产品比较优势理论分析

本文以比较优势理论为基础，结合实际，给出了区域农产品比较优势的概念和内涵解释。认为在市场经济条件下，区域农产品的价格和质量是确定其比较优势的决定性因素，而构成区域农产品价格和质量的因素又很多，本文从区域农业生产的自然资源条件与要素禀赋状况、营销、政府行为、生态环境、经营体制、历史发展基础与区域文化、特色产品这七个方面进行了全面分析，并给出了一个理论分析模型。     

厚壁毛竹与毛竹叶片的光学解剖结构比较分析

采用常规石蜡切片技术,对厚壁毛竹Phyllostachys edulis‘Pachyloen’和毛竹Phyllostachys edulis的叶片进行比较解剖研究,分析厚壁毛竹和毛竹叶表皮、叶肉细胞和梭形细胞等性状的解剖特征。结果表明,厚壁毛竹与毛竹叶的解剖结构组成基本相似;同一竹种不同年龄竹叶间各解剖因子存在明显差异,1年生新竹叶片的梭形细胞最为发达,导管截面积,输水截面积和韧皮部截面积也均高于其他年龄竹;而3至5年生竹的叶角质层厚度、维管束鞘细胞截面积大于1年生和2年生竹。     

Angiofibroma of the nasal cavity in 13 dogs

This case series describes a rare entity, nasal angiofibroma, in 13 dogs that were presented to the University of Wisconsin, School of Veterinary Medicine from 1988 to 2000. All dogs in this case series presented with clinical signs and radiographic changes that were strongly suggestive of a locally invasive neoplasm. However, histopathology completed on transnostral core biopsy samples revealed benign appearing vascular proliferation with secondary lymphosuppurative inflammation was established despite cytologic criteria of malignancy present in five dogs. On the basis of the outcomes in this case series, nasal angiofibroma should be considered a differential for dogs presenting with clinical signs consistent with a malignant nasal tumour.     

Comparison of two questionnaires to assess gastrointestinal toxicity in dogs and cats treated with chemotherapy*

Questionnaires completed by pet owners are widely used instruments to monitor adverse gastrointestinal (GI) effects in the owners' animals undergoing chemotherapy and for reporting toxicoses in clinical trials; however, no questionnaires have been formally evaluated. This study compares two questionnaire-based evaluations of adverse GI events: a basic, open-ended questionnaire and a detailed questionnaire modelled after the grading in the Veterinary Co-operative Oncology Group-Common Terminology Criteria for Adverse Events (VCOG-CTCAE). Owners completed both questionnaires after their dog or cat received moderately emetogenic chemotherapy. Results were used to derive toxicity grades for anorexia, vomiting and diarrhoea. We evaluated 123 pairs of questionnaires. Disagreement in grade of anorexia, vomiting and diarrhoea was found in 24, 7 and 13% of paired questionnaires, respectively (κ = 0.63, 0.83 and 0.71, respectively). Although 'good' to 'very good' agreement was found, the potential for only 'fair' agreement between questionnaire methods is of concern and suggests a need to adopt a standardized form.     

西宁地区温室番茄新品种引进与筛选试验

在青海省农林科学院北京-青海科技合作示范温室内,以“合作903”番茄为对照,引进“仙客一号”、“长城2号”、“长获909”、“中杂105”番茄进行温室夏秋栽培比较试验,从生育期、品质以及产量进行筛选试验.结果表明:“仙客一号”番茄早熟性强,产量最高,其可溶性蛋白、维生素C和可溶性糖含量都好于其它品种,可作为西宁地区温室夏秋番茄主栽品种进行推广应用.     

连片特困地区农业主导产业的比较优势演变趋势:以武陵山片区的贵州16个县为例

为连片特困地区的农业产业发展规划与政策制定提供参考,以武陵山片区的贵州16个县(区)为例,运用比较优势指数对其农业主导产业演变趋势进行定量分析。结果表明:自2000年以来,该区域农业内部各产业在国内的比较优势发生了一定程度的变化,水稻、玉米等粮食作物生产的微弱优势正在逐步丧失,而烤烟、油菜、茶叶、猪肉等少数产品生产具有比较优势,其中尤以烤烟和茶叶最为突出,且随着规模的迅速扩大,茶叶的比较优势正在进一步凸显,并逐步向集群发展转变。但是,该区域茶叶产业发展的效益优势指数偏低,表明生产效率的劣势将可能对茶产业集群发展产生不利影响,应从提高茶叶单产水平和推进茶叶产业链纵深化延伸两方面进行改善。     

亚麻品比试验研究

三年来通过对阿里亚娜、阿高斯、汉姆斯、范妮、依罗娜、双亚6号、黑亚11号7个品种丰产性、抗逆性、稳产性试验，选出依罗娜、阿高斯和阿里亚娜为推广品种，汉姆斯为继续试验品种，范妮、双亚6号和黑亚11号在宾川低则热乡镇不宜种植。     

吉林省粮食生产的结构变动与比较优势分析

在分析吉林省农业生产结构变动过程的基础上，采用显示性比较优势指标，分析了全省粮食生产的比较优势，为全省粮食生产结构调整提供了科学依据，并研究了全省粮食生产结构调整的对策。     

几种鲶形目鱼类血清蛋白的比较研究

长吻鮠(Leiocassis longirostris Giinther)、大鳍鳠(Hemiba-grus macropterus Bleeker)、南方大口鲶(Silurus soldatorvi meridionalisChen).鲶鱼(Silurus asotus Linnaeus)的血清蛋白,经盘状电泳分离,从负极到正极可分为脂蛋白、球蛋白、运铁蛋白、清蛋白和前清蛋白5个组分。电泳图谱具种间差异,亲缘关系越远差异越大。同种鱼雌、雄间的电泳图谱基本相似,但不完全相同,鲶鱼具有雌性特异蛋白。