棉蚜测报与综合防治专家系统

“棉蚜测报与综合防治专家系统”是由知识库（ＫｎｏｗｌｅｄｇｅＢａｓｅ）、推理机（ＩｎｆｅｒｅｎｃｅＥｎｇｉｎｅ）、数据库（ＤａｔａＢａｓｅ）和用户接口（ＵｓｅｒＩｎｔｅｒｆａｃｅ）４部分组成。专家系统将有关棉蚜的知识编写成一条条规则存储在知识库内。推理机根据用户提供的信息和知识库中的规则进行推理,一旦虫害蔓延,专家系统会根据棉蚜数量生态模型作出判断,把测报和防治方法提供给农户。     

Four New Jacaranone Analogs from the Fruits of a Beibu Gulf Mangrove Avicennia marina

Four new jacaranone analogs, marinoids F–I (1–4), were isolated from the fruits of a Beibu Gulf mangrove Avicennia marina. The structures were elucidated based on analysis of spectroscopic data. Marinoids F and G are shown to be diastereoisomers of chlorocornoside, a new halogen containing marine secondary metabolite. The antioxidant activity of the isolates was evaluated using a cellular antioxidant assay, and 4 showed good antioxidant activity (EC₅₀ = 26 μM).     

卤虫去壳卵在河蟹育苗中应用的研究

本文比较了卤虫去壳卵、无节幼体和人工合成饵料在河蟹育苗中■Ⅲ～■Ⅴ期的饵料效果,探讨了卤虫去壳卵替代无节幼体在河蟹育苗中应用的可能性。     

论农田水利灌溉的问题及对策

农田水利灌溉问题对于农业大国是非常重要的,直接涉及我国的农业经济的繁荣发展.由于我国的地形地势的多变复杂,有许多的地区,需要灌溉、排水,以及相应的耕作措施.就对农田水利灌溉存在的问题进行分析,提出一些关于农田水利灌溉的对策和方法.     

武威绿洲温室果树主栽品种需冷量测定及其应用研究

通过定位定时采样,采用水培枝条法和武威绿洲12年来稳定通过≤7.2℃气温的平均初始日期,测算出8个温室葡萄主栽品种,3个温室油桃主栽品种,3个温室杏主栽品种的需冷量,为武威绿洲的温室果树栽培确定揭帘升温时间提供了科学依据。     

旧院黑鸡蓝壳蛋的品质研究

旧院黑鸡蓝壳蛋的比重（４．９９），胆固醇含量（６．３３ｍｇ／ｍｌ）均极显著高于伊莎褐蛋，蛋重（５２．４ｇ）极显著小于伊莎鸡蛋，哈夫单位（８８．１８）显著高于伊鸡蛋，蛋形指数（１．３７）和蛋壳厚度（０．３１７６ｍｍ）与伊莎鸡蛋无显差异。旧院黑鸡蓝壳蛋和白壳蛋与农村散养的科白鸡白壳蛋的蛋重，比重，哈夫单位，蛋形指数等无左异。旧院黑鸡蓝壳蛋和散养科白鸡白壳蛋白壳蛋的胆固醇含量无显著差异，但极显著高于旧院     

精准扶贫推动下西盟米荞产业发展现状调查

通过对西盟米荞产业发展现状的调研,分析了米荞产地的自然概况、重点乡镇近几年的种植情况、种植效益,结合对西盟县新农村建设及精准扶贫的实践与观察,对米荞产业发展前景及存在问题进行分析,并结合自身的认识和理解,提出一些看法和建议,强调强化组织领导和科技推广力度,建设标准化示范基地,重视产地保护工作,注重品牌建设,以及打通产销渠道。     

A COMPARATIVE STUDY BETWEEN FAUNA OF HEILONGJAING(CHINA)AND ALBERTA PROVINCE(CANADA)

Heilongjing(China)and Alberta(Canada)provinces are situated at the same lati-tude,with similar nature conditions.Mammals in Alberta account for 87 species and in Heilongj-ing,97 spesics,among which a number of orders,families and species are in common.Continentsof Eurisia and North America histoi cally were connected and separated for several times,sothere are a number of animal forms in common,among them the similarity of herbivores is rath-er high.The similarity index of cervidae is 0.54.Other orders with comparatively similarcompiosition are Insevtivora,Chiroptera and Lagomorpha.In two orders,there are no commonspecies.In these two regions,duc to historical reasons,a number of specific genera and specieswere formed.