Distribution , formation and characteristics of the saline - alkalized land in northeast china was systematically analyzed and agro - biological measures for management of saline - alkalized soil were illustrated , including cultivation of rice to wash down salts , cultivation practices , soil building practices , plantation of salt - tolerant plants and biological removal of alkali , etc . in the paper 特殊的气候、地形和水文地质等自然因素以及人类不合理的农业技术措施和社会生产活动等人为因素加剧了该区盐碱化发生、分布与演变。
In the fourth chapter , study on the structural system and cracking - resistant in bulky concrete of the anchor , combined with the designing and building practice of the anchor in yichang yangtse river highway bridge , a optimized gravitational concrete anchor and a systemic measures for the cracking - resistant for the construction of the bulky concrete in the anchor have been developed and adopted in the bridge efficiently which demonstrates the anchor type and the measures are feasible and practical 在第4章?悬索桥锚碇合理结构型式及综合防裂技术研究中,结合宜昌长江公路大桥设计与施工的具体实践,介绍了宜昌长江公路大桥锚碇结构的合理选取,特别是介绍了宜昌长江公路大桥锚碇大体积混凝土的设计与施工中所采取的综合防裂措施。
All the time around through accelerate medium and small - scale digitalization , networked to build in order to reach this text digital library goal this launch of library , prove medium and small - scale library digitalization system in the course of building plan in detail , resource construction , database establishment , website construction , share mode person who establish a series of important problems , combine one typical medium and small - scale digitalization of library build practice case reflect the card is studied such as the library , baoshan district of shanghai . depict the basic outline of medium and small - scale library digitalized construction tentatively , propose that medium and small - scale library digitalized construction should be in line with the overall plan , the scientific method implemented step by step , pay attention to characteristic construction , take the way shared , could find one ' s own rational localization accurately in fast changing information age , show vigorous development potentiality especially 本文始终围绕通过加快中小型图书馆的数字化、网络化建设以达到数字图书馆这一目标展开,详细论证了中小型图书馆数字化建设过程中的系统规划、资源建设、数据库建设、网站建设、共享模式确立等一系列重要问题,结合上海市宝山区图书馆这样一个典型的中小型图书馆的数字化建设实践个案加以映证研究,初步描绘出中小型图书馆数字化建设的基本轮廓,提出中小型图书馆数字化建设应该本着整体规划,分步实施的科学方法,注重特色建设,走共享之路,才能在瞬息万变的信息时代找准自己的合理定位,凸现旺盛的发展潜力。
On the base of consulting a large number data and literatures which related to the building of chinese agricultural science and technology park , and investigating the status quo of agricultural science and technology in huanggang city , hubei province , this study probed into the following content by using the way of combining standard with position and the study of comparative and analytic law : started from the connotation , characters and functions of agricultural science and technology park , combined with the related practice of agricultural science and technology park building , the thesis proofed the great strategic significance to build agricultural science and technology park . on the other hand , through summarized the building practice of the agricultural science and technology park in china , evaluated the main achievements and experiences to build the agricultural science and technology park in china 本研究在查阅了大量的与我国农业科技园区建设相关的文献与资料的基础上,对湖北省黄冈市农业科技园区建设的现状进行了调查,运用规范和实证相结合及比较分析的方法探讨了下列内容:从农业高新技术、农业科技园区的科学界定和功能定位出发,结合农业科技园区建设的相关实践,论证大力发展农业科技园区对我国农业和农村经济发展的重大战略意义;通过对农业科技园区建设实践的总结,评价了我国农业科技园区建设所取得的主要成绩和经验;结合园区建设的现状,分析存在的问题,进而提出了建设有中国特色的农业科技园区的若干对策思路。