大蒜播种机械的研究现状

介绍了大蒜自身价值和种植情况,由于蒜种的形状和栽种的特殊要求,国内外大蒜栽种机械的研究缓慢,而人工栽种生产率很低,所以迫切需要一种实用的大蒜播种机械.为此,分析了目前国内外大蒜播种机械的发展状况,对其按动力来源进行分类介绍,说明其实际工作状况,并对国内现有专利产品进行参数统计.     

Influence of soil mineralogy and chemistry on site quality within geological regions in Sweden

The relationship between soil properties and forest site quality was investigated. The site quality functions currently used fail in predicting variations within regions and the purpose of this study was to evaluate if the local accuracy in forest resource assessments could benefit from the use of geological and geochemical data. The investigation was conducted in mid-Sweden within two geological regions. The mineralogy of the parent material (C horizon) was estimated using a method for normative mineralogical assessment and the soil chemistry was determined for five soil horizons. The importance of individual minerals for site quality was different within the two geological regions. Functional relations were established between the properties in different soil horizons and site index. The functions between mineralogy and site index were improved by splitting the data according to the geologically different regions. The mineralogy explained 37–61% of the variation in site index, whereas the properties in the upper soil profile (O–B horizon) related more strongly to site index (18–80%). Stronger relations could be established in the mineralogically rich than in the mineralogically poor area.     

论我国林地保护制度

林地保护制度是森林法确立的一项法律制度。结合林地保护与管理实践,研究林地保护制度,探讨林地保护制度的理论问题,提出进一步完善林地保护制度的建议。     

浮梁县文物初探

对浮梁县发现的古窑、古建筑、古墓等7个品类文物作了简介，以引起人们的关注。     

辣木的研究现状及其开发前景

综述辣木在国外的研究和开发现状，根据热区资源条件，提出发展辣木种植和产品开发的思路。     

大理州野生矮杨梅生物学特性及驯化栽培研究

2001年在宾川县大营镇排营村的滴水箐，进行矮杨梅育苗及造林试验，面积8．8hm^2。1年后观察，成活率达90．7％，平均地径0．39cm，平均苗高13．39cm。对存在的问题进行了讨论，提出了改进意见。     

试论旅游概念规划的研究内容

旅游概念规划的出现引起了众多学者的关注。在界定旅游概念规划的基础上,对旅游概念规划的内容进行了研究,指出旅游概念规划主要包括基础研究、专题研究和战略研究3个基本部分。     

The Design Thought and Implementation Method on Data Collection and Transmission System of the First Industrial CT in Our Country

On the base of proving the feasibility of serial and parallel methods on Data Col-lection and Transmission System of the first Industrial CT in our country,we selected a more ad-vanced method which is the serial method to design this system     

甲苯咪唑在鳗鲡体内的药物代谢及组织残留

采用反相高效液相色谱法定量检测抗鳗鲡拟指环虫药物甲苯咪唑及其代谢产物羟基甲苯咪唑和氨基甲苯咪唑。研究欧鳗经1mg／L甲苯咪唑药浴处理后,其皮肤、脂肪、肌肉、肝脏和肾脏中甲苯咪唑的代谢和残留情况。实验结果表明：药浴时,欧鳗在24h内快速吸收药物,皮肤上和脂肪中含有高浓度甲苯咪唑,且甲苯咪唑在欧鳗肝脏和肾脏中转化成羟基甲苯咪唑和氨基甲苯咪唑,其中氨基甲苯咪唑是主要代谢产物;三种化合物在皮肤上的残留量明显高于肌肉;鳗鱼可食用部位（肌肉和皮肤）中甲苯咪唑和羟基甲苯咪唑在3d内代谢浓度降至药残最高限量（0．1mg／kg）,5d内可完全降解消除．但氧墓甲苯眯唑在停药12d后的含量仍高于0．1mg／kg。