红三叶的研究和利用

结合国内外有关红三叶研究和利用的科研成果，对红三叶的价值，品种分类，生长特性，混播和施肥技术及利用特点进行了综合分析，指出红三叶在我国，特别是南方地区具有很大的栽培推广潜力。     

农业质量标准体系建设的现状、问题与对策

阐述了农业质量标准体系的内涵,分析了我国农业质量标准体系的现状并针对我国现阶段农业质量标准体系建设存在的问题,提出了解决问题的相应对策。     

德阳市湿地水鸟资源及保护对策

湿地水鸟是湿地生态系统的重要组成部分，对维持湿地生态系统起着举足轻重的作用。德阳建市20a来，虽曾救护过不少濒危水鸟，但该市的湿地水鸟资源不清。1999年2002年，3次对全市湿地区域内的野生水鸟种类、分布进行了专项调查研究，调查结果显示，德阳市分布有湿地水鸟9目12科42属78种，大多属于旅鸟和候鸟，留鸟甚少，属中日保护协定水鸟50种，中澳保护协定水鸟16种。论文还就保护德阳市湿地水鸟提出了6条建议。为德阳市政府制定保护湿地水鸟规划提供科学依据。     

热带牧草对高温干旱适应性特征特性的研究

对美国矮象草、毛花雀稗、百喜草等热带牧草具有的特殊组织与细胞结构进行了探讨。从而确认这几种热带牧草对高温干旱、酸、瘠有很强的适应性，是适合红壤丘陵区种植的优良草种，可大力推广     

Effect of ivermectin and oxfendazole on shedding of larvae of the lungworm (Dictyocaulus viviparus) by red deer (Cervus elaphus)

Thirty eight newly weaned hinds were randomly allocated to one of two equal groups. One group received ivermectin, the other, oxfendazole at dose rates of 0.2 mg/kg and 4.5 mg/kg, respectively. All deer were drenched four times and were grazed on pasture. Both anthelmintics reduced D. viviparus faecal larval counts to low levels 20 days after dosing, but the mean larval output and the proportion of deer shedding D. viviparus larvae at 27 and 33 days after treatment, were significantly lower in the ivermectin treated group. There was no significant difference in weight gain between the two groups throughout the trial. This study suggests that ivermectin prevents reinfection with D. viviparus for approximately 14 days longer than oxfendazole.     

Synergistic interactions between phenylamide fungicides and respiration inhibitors in controlling phenylamide-resistant populations ofPhytophthora infestans on potato tuber disks

The efficacy of mixtures of respiration inhibitors and phenylamide fungicides (oxadixyl and metalaxyl) in controlling late blight was investigated using potato tuber disks. Results showed that uncoupling agents(e.g. DNP), inhibitors of ATP formation(e.g. oligomycin), ionophores(e.g, valinomycin) and inhibitors that block specific carriers in the electron transport chain(e.g. rotenone, antimycin A) increased significantly the control efficacy of both metalaxyl and oxadixyl towards populations ofPhytophthora infestons when applied to tuber slices pretreated with sublethal doses of both fungicides. When applied alone at the same doses, respiration inhibitors did not inhibit the development of the late blight fungus. Increased control efficacy of mixtures was not noted against phenylamide-sensitive populations of the fungus.     

Estimation of the costs of mastitis, using National Animal Health Monitoring System and milk somatic cell count data

Data collected by the National Animal Health Monitoring System in Ohio for a 12-month period during 1986 and 1987 were used to determine the relative magnitude of costs associated with mastitis in the following categories: milk production loss, veterinary services, drugs, producer labor, and "other" factors. The cost of milk loss associated with mastitis that was reported by producers cooperating in the National Animal Health Monitoring System program was compared with estimates based on bulk tank somatic cell counts and individual cow milk somatic cell counts. Using producer-reported estimates, milk loss accounted for about one third of the total cost associated with mastitis. When estimates of milk loss were replaced by estimates based on bulk tank somatic cell counts, milk loss accounted for over 80% of the total cost of mastitis. Estimates of the cost of milk loss based on studies relating milk yield to somatic cell counts differed considerably. Consequently, it was unclear how to best estimate the relative magnitude of the milk loss component of mastitis costs.