动物遗传育种系列课程双螺旋循环教学模式的建立与实践

根据动物遗传育种系列课程的结构、教学特点、本学科学生的层次性、学科发展和对教师多能性的要求 ,对该系列课程进行了教学内容、教学方式、教学手段的全面改革 ,构建了一套双螺旋循环教学模式 ,即教师与课程的螺旋循环链和学生层次与学习过程的螺旋循环链。这两条“教”、“学”互动的螺旋循环链有机结合 ,每完成一次循环教学过程 ,双螺旋上升一个螺距 ,教师的教学水平提高 ,学生的综合素质和学历提高一个层次。     

多粒多小穗小麦品种绵农2号的选育

从生态、生产和遗传育种等方面分析了四川小麦多小穗育种的理论依据，并就多小穗品种绵农2号的选育方法进行了讨论。这些方法有：（1）多组合小群体确定目标组合；（2）在目标组合中确定重点目标组合；（3）在重点目标组合中确定重点株系；（4）进行阶梯式杂交。     

再谈四川盆地小麦品种产量性状的育种目标

用近10年的小麦区试资料,从粒重的角度将四川麦区小麦品种分为“大粒型”（千粒重50g左右）、“中间型”（千粒重45g左右,穗粒数40粒左右）和“粒数型”（千粒重40g左右,稳粒数50粒以上）三类,通过相关及因子分析表明：我省推广小麦品种大多属“中间型”,该类品种丰产性、稳产性及商品性都较优良;“粒数型”品种的丰产性和稳产性在三类品种中最好但粒重较小,商品性欠佳;而“大粒型”品种对环境适应性较差,不利高产稳产。四川小麦育种宜采用“中间型”或“粒数型”路线,特别是产量水平要有所突破,更须走“粒数型”的路子。     

技术进步、生产方式转型与中国生猪养殖温室气体减排

基于技术水平和规模化水平时空差异,收集不同养殖模式生长周期、出栏量等关键数据,对全国和各省生猪养殖碳排放量进行估算。结果表明,1998-2015年,全国生猪养殖碳排放量呈震荡上升趋势,从1.08亿吨CO2当量增加到1.33亿吨 CO2当量;规模化养殖逐渐取代散养成为碳排放主体,2015年其排放量占比达到73.57%;四川、湖南、河南、山东等生猪主产省份碳排放量居全国前列;LMDI模型的分解结果表明,生猪产量扩张是碳排放增长的主要驱动力,推动碳排放量增长43.93%,技术进步和养殖规模化则将碳排放增长削减了近一半。因此,提高养殖技术、推动规模化养殖、应用沼气池处理粪污将是重要的温室气体减排措施。     

Multiphase experiments in practice: A look back

Multiphase experiments are introduced and an overview of their design and analysis as it is currently practised is given via an account of their development since 1955 and a literature survey. Methods that are available for designing and analysing them are outlined, with an emphasis on making explicit the role of the model in their design. The availability of software and its use is described in detail. Overall, while multiphase designs have been applied in areas such as plant breeding, plant pathology, greenhouse experimentation, product storage, gene expression studies, and sensory evaluation, their deployment has been limited.     

Evaluation of Inhaled Versus Deposited Dose Using the Exponential Dose‐Response Model for Inhalational Anthrax in Nonhuman Primate,Rabbit, and Guinea Pig

The application of the exponential model is extended by the inclusion of new nonhuman primate (NHP), rabbit, and guinea pig dose‐lethality data for inhalation anthrax. Because deposition is a critical step in the initiation of inhalation anthrax, inhaled doses may not provide the most accurate cross‐species comparison. For this reason, species‐specific deposition factors were derived to translate inhaled dose to deposited dose. Four NHP, three rabbit, and two guinea pig data sets were utilized. Results from species‐specific pooling analysis suggested all four NHP data sets could be pooled into a single NHP data set, which was also true for the rabbit and guinea pig data sets. The three species‐specific pooled data sets could not be combined into a single generic mammalian data set. For inhaled dose, NHPs were the most sensitive (relative lowest LD₅₀) species and rabbits the least. Improved inhaled LD₅₀s proposed for use in risk assessment are 50,600, 102,600, and 70,800 inhaled spores for NHP, rabbit, and guinea pig, respectively. Lung deposition factors were estimated for each species using published deposition data from Bacillus spore exposures, particle deposition studies, and computer modeling. Deposition was estimated at 22%, 9%, and 30% of the inhaled dose for NHP, rabbit, and guinea pig, respectively. When the inhaled dose was adjusted to reflect deposited dose, the rabbit animal model appears the most sensitive with the guinea pig the least sensitive species.     

略论原始民族在生育过程中的饮食禁忌

饮食是人类生存和繁衍的首要物质基础。饮食文化比起器物文化来,它的社会学和心理学的因 素更为显著。原始民族在生育过程中所施行的饮食禁忌,特别是父亲的饮食禁忌是原始民族利用交感巫术给 予妻子心理上的安慰和鼓励,籍巫术的感应力以求母婴的平安、种族的繁衍。     

川牧α—复合添加剂预混料饲养效果试验报告

选用长白×荣昌F_1代断奶仔猪24头,随机分成2组,在接近农村饲养条件的中等营养水平下,对川牧α—复合添加剂预混料(猪用)进行了对比试验。试验结果表明。该饲料产品在生长猪的饲养中具有促进生长发育、提高日增重的作用和提高饲料利用率、降低饲料消耗之功效。该饲料产品能适应我国养猪生产之需,具有良好的增产作用。     

提高籼型两系杂交稻产量的主攻方向研究

12个税型两系杂交稻组合在5个播期条件下的播始天数、株高、单株草重、谷草比、单株有效稳、每穗着粒数、实粒数、结实率、千粒重及单株粒重等10个性状进行相关及通径分析，结果表明，不仅结实率及谷草比与单株粒重的相关系数（正相关）较大，而且这2个险状对单株粒重的直接通径系数（为正值）也较大，说明现阶段提高结实率及谷草比是选育强优势税型两系杂交稻的主攻方向。对提高结实率的途径也进行了讨论。     

专业教学应注意学生综合素质的培养

园艺植物育种专业课的教学 ,不仅要注重学科基本理论的教学 ,也应当注重学生综合素质的培养 ,努力促进学生思想品德的培养 ,提高学生的思想认识、政治觉悟和道德品质 ;注重促进学生创新能力的培养 ,强化学生的创新思维 ,消除学生的心理障碍 ;注重促进学生心理素质的培养 ,提高学生的心理承受力和受挫力以及对社会的适应能力 ,使学生爱业敬业 ,真正成为对社会有用的专业人才。