淹水、干旱条件下北空越桔生理反应的研究

采用盆栽试验,研究了'北空'越桔在连续淹水、干旱条件下的生理反应。结果表明,在淹水和干旱条件下,越桔叶片的光合强度、叶绿素含量（Chla、Chlb、Chla＋b、Chla／Chlb）、光量子通量密度降低,而呼吸强度、气孔导度、蒸腾速率升高,随逆境时间加长,变化幅度增大。     

奎屯,乌苏,独山子地区水资源污染现状

通过对本区水质监测资料,废水排放资料的分析,评价区域水资源污染情况,找出目前主要的水环境问题,提出解决区水环境问题的途径或措施。     

毛乌素沙地中几种植物水分特性的研究

用ＬＩ－１６００稳态气孔计研究了我国干旱半干旱地区毛乌素沙地恢复重建生态系统中几种主要植物的蒸腾作用及产量比较。结果表明：羊柴平荐处理后,生长旺盛,蒸腾速率加快,提高;日本大粒莉麦可利用较深层地下水分,维持旺盛的生长活动,     

柴达木盆地水资源与合理开发利用研究

本文通过对柴达木盆地水资源量、农业水资源开发利用现状分析,结合盆地水土资源匹配情况与经济发展方向,提出了实现盆地水资源合理开发利用的基本途径,并指出在实施水资源开发利用中所要注意的具体问题,为盆地可持续发展提供依据。     

柴达木盆地主要河流的水化学特征

为了保护水资源,不仅需要了解人为引起的水质污染状况,而且需要研究河流水体在自然界的循环过程中所形成的水化学特征及其时空变化。本文对柴达木盆地主要河流的水化学特征进行了分析、研究,对水质状况进行了评价。     

新疆塔里木河变迁与水资源

本文论述了自然和人类活动所造成的塔里木河干流水资源的变化及其对生态环境的影响,针对生态环境日益恶化的现状,提出了防治、对策。     

杨幼树水分生理指标和光合强度与土壤含水量关系的研究

应用盆栽法研究了土壤含水量与杨幼树的水分饱和亏缺,叶水势,蒸腾强度和光合强度各项指标的关系。通过研究,划定了水分胁迫等级,适宜、基本适宜和不适宜杨树生长的土壤含水量界限,还划定了需要灌溉补水的土壤含水量临界值及补水后应达到的界限。     

Current distribution of sarcoptic mange in wombats

Objective To determine the distribution and prevalence of sarcoptic mange in wombats, particularly the common wombat ( Vombatus ursinus ).
Design Questionnaire survey in two parts.
Procedure Questionnaires were distributed to biologists, rangers, animal carers and naturalists. Part 1 of the questionnaire aimed to determine the present distribution of sarcoptic mange in wombats (103 responses). Part 2 invited respondents to assess the prevalence of sarcoptic mange in wombats over a 3 month period (four responses). Information on wombats from 66 localities was received. Each locality represented an area of about 2500 km².
Results Mange was observed at 93% of localities surveyed and Sarcoptes scabiei was present in common wombats at 52% of localities. Sarcoptic mange was highly prevalent (22%) in two common wombat populations in Victoria. Anecdotal evidence suggested that mange epizootics are sporadic, cause significant morbidity and mortality and have a substantial effect on local abundance. The respondents did not report sarcoptic mange in either northern hairy-nosed wombats ( Lasiorhinus krefftii ) or southern hairy-nosed wombats ( Lasiorhinus latifrons ).
Conclusions Sarcoptic mange occurs in common wombat populations throughout the range of the common wombat including Tasmania and Flinders Island. While mange epizootics are sporadic, they have the potential to threaten the long-term survival of small, remnant populations.     

实用饲粮补锌对肉鸡组织锌、免疫器官及生产性能的影响

采用实用饲粮（玉米－多饼型,含锌３０ｍｇ／ｋｇ）,对狄高肉鸡（４～６周龄）分别补加锌４０和８０ｍｇ／ｋｇ,研究微量元素Ｚｎ对试鸡组织锌含量、免疫器官生长发育及生产性能的影响。结果表明饲粮缺锌（含Ｚｎ３０ｍｇ／ｋｇ）不影响鸡体重、饲料转化率和心、肝、肾、胰、肌胃、脑千克活体重（Ｐ＞０．０５）,但缺锌影响脾、胸腺、法氏囊、盲肠扁桃体、免疫器官及腺胃、小肠厚度、甲状腺生长发育（Ｐ＜０．０５或Ｐ＜０．０１）;饲粮补锌（４０、８０ｍｇ／ｋｇ）能改善免疫器官机能,增加胫骨、跗骨、趾骨、肝、胰、肾、心组织锌含量（Ｐ＜０．０５或Ｐ＜０．０１）;骨、肝、胰组织对饲粮锌缺乏较敏感,趾骨锌含量是标识鸡锌营养状况的灵敏指标。     

云南水牛资源及利用

云南水牛资源丰富,发展潜力大,本文简要论述了云南水牛的生态分布,体形外貌,遗传多样性及其生产性能,并指出云南水牛由役用型向役,肉,乳兼用型的利用方向发展。