直干桉、蓝桉无性系多点测定的初步分析

经方差分析后发现，３个试验点的直干桉、蓝桉无性测定林在１９９４年７月以前造的，其处理间的生长差异显著或极显著，直干桉的生长差异比蓝桉更大。将造林时的苗高作协方差分析，用回归系数调整树高后，大部分无性系的树高都超过对照。对无性系与环境的交互作用初步结果的分析表明，多数地点、地点ｘ无性系的差异显著。以实测值（并非调整值）为难，选出了材积超过对照２５％的直干桉无性系７个，蓝桉无性系６个，最好无性系的材积分别为对照的２８８％和２５６％。     

纵带球须剌蛾的生物学特性及其防治

纵带球须刺蛾是多种农林作物的害虫。在广州1年发生1～3代,以老熟幼虫在土中茧内越冬,幼虫一般为7～8龄,幼虫感染核多角体病毒后,常成为流行病,死亡率可达90%以上。进行防治试验表明,90%敌百虫晶体40000倍液、80%敌敌畏乳剂100000倍液和50%杀螟松乳剂100000倍液等,以及2.3×10~(5-7)浓度的核多角体病毒,均对幼虫有较好的毒杀效果。     

家蚕种茧育稚蚕人工饲料育的比较试验

通过对日系种茧育稚蚕人工饲料育繁育的一代杂交种进行比较试验。探讨人工饲料在种茧育上的应用可能性。     

不同药物防治羔羊奶结症临床效果分析

为寻找羔羊奶结症的有效防治药物，将筛选出的5组药物用于羔羊奶结症的防治试验？结果表明，第l组药物“消维康”口服液对于减少羔羊奶结的发生有明显作用，第2组药物四仙莪棱香附散治疗羔羊奶结效果最佳．     

中国和欧盟动物源性产品中药物残留限量差异性分析(一)

将中国和欧盟动物源性产品中药物残留标准进行了对比,同时结合TBT/SPS预警数据库,找出二者差异性,并提出了改进建议。     

中美体育慈善现状的比较研究

美国体育慈善有着良好的慈善文化背景、税收激励和管理制度，在参与意识、运营主体、运营规模 、活动方式、评估约束机制、组织等慈等方面都已经取得卓有成效的效果。中国体育慈善需要不断地吸取 美国已有的成熟经验，扩大慈善参与形式，完善慈善制度建设，逐步养成中国体育明星慈善参与的道德责 任和习惯，实现国内体育慈善蓬勃发展的新局面。     

5个竹种林下土壤营养元素含量比较

[目的]比较不同竹种林下土壤的营养元素含量。[方法]在福建农林大学百竹园内选取大明竹、牡竹、角竹、花巨竹和大木竹5个竹种,分别于春、夏、秋、冬4个季节对其林下土壤进行"S"型多点采样,对其氮、磷、钾含量进行测定。[结果]大明竹、牡竹、角竹、花巨竹和大木竹5个竹种林下土壤的营养元素含量皆较高,但各竹种之间的营养元素含量有显著差异,且各竹种在不同季节的营养元素含量也有明显差异。其中大明竹林下土壤的营养元素含量最高,且最为稳定,牡竹相对较差。[结论]在福建地区,大明竹对营养元素的产生及维系稳定具有良好的能力,可成为该地区城市观赏用竹及发展林下经济的优良竹种。     

Sugar beet rotation effects on soil organic matter and calculated humus balance in Central Germany

In order to quantify the influence of land use systems on the level of soil organic matter (SOM) to develop recommendations, long-term field studies are essential. Based on a crop rotation experiment which commenced in 1970, this paper investigated the impact of crop rotations involving increased proportions of sugar beet on SOM content. To this end, soil samples were taken in 2010 and 2012 from the following crop rotation sequences: sugar beet–sugar beet–winter wheat–winter wheat (SB–SB–WW–WW = 50%), sugar beet–sugar beet–sugar beet–winter wheat (SB–SB–SB–WW = 75%), sugar beet–grain maize (SB–GM = 50%) and sugar beet-monoculture (SB = 100%); these were analysed in terms of total organic carbon (TOC) and microbial biomass carbon (MBC) content, MBC/TOC ratio and the TOC stocks per hectare. In addition, humus balances were created (using the software REPRO, reference period 12 years) in order to calculate how well the soil was supplied with organic matter. In the field experiment, harvest by-products (WW and GM straw as well as SB leaves) were removed. After 41 years, no statistically significant differences were measured between the crop rotations for the parameters TOC, MBC, MBC/TOC ratio and the TOC stock per hectare. However, the calculated humus balance was significantly affected by the crop rotation. The calculated humus balance became increasingly negative in the order SB–SB–WW–WW, SB–SB–SB–WW, SB monoculture and SB–GM, and correlated with the soil parameters. The calculated humus balances for the reference period did not reflect the actual demand for organic matter by the crop rotations, but instead overestimated it.     

Use of group-randomized trials in pet population research

Communities invest considerable resources to address the animal welfare and public health concerns resulting from unwanted pet animals. Traditionally, research in this area has enumerated the pet-owning population, described pet population dynamics in individual communities, and estimated national euthanasia figures. Recent research has investigated the human–animal bond and explored the community implications of managed feral cat colonies. These reports have utilized traditional epidemiologic study designs to generate observational data to describe populations and measure associations. However, rigorous scientific evaluations of potential interventions at the group level have been lacking. Group-randomized trials have been used extensively in public health research to evaluate interventions that change a population's behavior, not just the behavior of selected individuals. We briefly describe the strengths and limitations of group-randomized trials as they are used to evaluate interventions that promote social and behavioral changes in the human public health field. We extend these examples to suggest the appropriate application of group-randomized trials for pet population dynamics research.     

智能温室草莓品种比较试验

为筛选出智能温室适栽草莓品种,本试验以红颜为对照,引进宁丰、容宝、紫金久红、甘红等4个品种。以生长季内观察物候期、主要植物学特性、生长结果特性及病害发生情况作为品种适应性监测指标,进行适栽草莓品种的筛选比较试验。结果表明,宁丰、容宝在智能温室高架基质栽培中表现早熟,可适当推广;紫金久红综合性状优良,可作为当地主栽品种红颜的配搭适当发展;甘红可作为观光采摘和鲜食新品种。