“土壤水库”营造工程是科技兴农的基础工程

来源 :农村机械化 | 被引量 : 0次 | 上传用户:lisky
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
“水利是农业的命脉”,以机电井灌溉方式为农作物的生长、发育提供所需水分是一条重要的途径。然而,面对内蒙古察右后旗这样大面积的坡梁旱地,加之特定的自然环境条件,完全靠机电井为农作物供水是不可能的。如何使大面积坡梁旱地的农作物生长有充足的水分和合理的生长... “Water conservancy is the lifeblood of agriculture”. It is an important way to supply the needed water for the growth and development of crops by means of electro-mechanical well irrigation. However, in the face of such a large area of ​​dry slopes like Chayouhou Banner in Inner Mongolia, combined with the specific natural environment conditions, it is impossible to supply water to the crops entirely by the electromechanical wells. How to make a large area of ​​slopes of dry land crops have sufficient water and reasonable growth ...
其他文献
Several homologous series of steranes with alkyl side chains (C1 to C4) at the 3β position have been identified in the Jiyang Eogene lacustrine deposition. It
【摘 要】 道路桥梁建设规模的不断扩大,在道路建设中,桥梁占据相当大的工作量,然而随之出现的质量问题也日益增多,产生这些问题的原因是多种多样的。文章就道路桥梁问题进行分析,探讨相应策略。  【关键词】 道路;桥梁;施工;存在;问题;对策  引言:  随着国民经济的发展,我国的公路事业正突飞猛进的向前展开,道路桥梁工程中质量问题至关重要,直接影响到人民群众的生命财产安全,所以在施工中要引起高度重视。
大家都知道,冷轧钢材表面碳化合物杂质对产品的磷酸盐化,着色之后的抗腐蚀性能有着负面影响。在冷轧钢材表面残存的碳超过8mg/m~2时,这些性能明显恶化。由于这个原因,冷轧板
Within a series of pot experiments with substrates sampled at heavily to moderately polluted sites of past metal mining activities, it was tried to influence th
Taipingxi, Yichang, Hubei province, China, is situated on the left of the Three-Gorges Dam of the Yangtze River. The bedrock is granite. Yhe Three-Gorges Projec
The Brazilian Society of Geochemistry—SBGq founded in 1985, is located at Rio de Janeiro, Brazil, having more than 300 affiliates that represent most of the pr
介绍了针对硬脆材料电解放电复合磨削加工的要求 ,利用电复合加工原理而设计制造的 MEEC磨轮在线修整系统的设计方案。并详细阐述了对系统进行控制的单片机控制系统的设计过
Mt. Amiata (Southern Tuscany, Central Italy) is an extinct Quaternary volcano located in an area still marked by high heat-flow that is caused by deep seated (6
持续二十多年的经济增长使国人为之欢欣鼓舞 ,饱受贫穷之苦的中国百姓 ,有一部分终于圆了小康之梦 ,一些经济学家开始鼓动提高小康的标准。然而 ,如果将这一时期的经济增长加
近年来、我国冶金行业大力推广使用的热轧新三级钢筋 (HRB4 0 0 )具有强度高、性能稳定、抗震性能好等优点 ,经过施工中进行的实践检验证明 :普通二级钢筋与 (HRB335 )相比 ,可节省