农机农艺联动 完善水稻机插秧高产栽培

机械化插秧是一项系统工程技术,是农机与农艺的相融合,包括育秧、机插、机插秧大田管理等技术。笔者就当前高性能机械插秧的特点、技术要求和几年来本地区试验示范推广成功、简易而且适用于机插的一系列配套的水稻高产栽培技术进行了分析和探讨,     

严寒地区高性能混凝土抗冲磨试验研究

为了满足严寒地区水利工程的抗冲磨要求,开展了掺加引气剂、HF抗冲磨剂等外加剂,研究了水胶比、粉煤灰掺量、HF抗冲磨剂掺量对高性能混凝土抗冲磨性能的影响,以期为今后的类似工程提供一定的参考价值。研究表明：粉煤灰掺量在15%～25%时,高性能混凝土的抗冲磨强度变化趋势是先升后降,说明掺入适量的粉煤灰是可以提高抗冲磨强度的;HF抗冲磨剂能显著提高高性能混凝土的抗冲磨性能,但掺量并不是越大越好,有一个最优掺量;混凝土的抗冲磨强度随着水胶比的降低而增大,但水胶比若过小,则抗冲磨强度反而会降低。     

莱恩年产1万台收割机项目正式投产

5月27日,莱恩农业装备有限公司在浙江省金华市莱恩中国总部举行仪式,宣布年产1万台高性能半喂入收割机项目正式投产.这标志着中国农业装备行业又多了一支新的劲旅.来自国内外180多家经销商、供应商代表以及新闻记者参加了竣工投产庆典.     

Determination and Difference Analysis of DNA Methylation Content Both in Blood and Muscle Tissue of Pigs

In this experiment, DNA samples from parental lines Large White, Landrace, and Meishan pigs, and their hybrids Large White × Landrace, Landrace × Large White, Large White × Meishan, and Meishan × Large White pigs were used for the determination of DNA methylation content in both blood and muscle tissue. The differences about DNA methylation content between parental lines and their hybrids were analyzed. These will offer theoretical support from molecular level for heterosis. High performance liquid chromatography （HPLC） was firstly used to detect DNA methylation content. The average DNA methylation content in 163 DNA samples of muscle tissue was 16.92%, whereas, the average DNA methylation content in 182 samples of blood was 6.49%, the difference between which was especially prominent （P 〈 0.01）. In blood, the methylation content was lower than 10%, with the highest level of 9.93% in Landrace x Large White and the lowest of 2.97% in Landrace. The difference between Large White and Landrace was highly significant （P 〈 0.01）, but not significant between Large White and Meishan; and the differences between reciprocal cross hybrids in both hybrid systems were significant （P 〈 0.05）. In muscle tissue, the differences in methylation content among three parents were not significant （P 〉0.05）; and the differences between reciprocal cross hybrids in both hybrid systems were not significant （P 〉 0.05）, but between different hybrid systems, the hybrids had a significant difference （P 〈0.05）. The average methylation content in muscle samples was higher than that in blood samples, and the methylation in different tissues was different.     

江宁区构建“平安农机”的探索与实践

南京市江宁区地处长江下游,长三角之巅．属宁镇扬丘陵地区,全区现有拖拉机3898台,联合收割机150台,高性能插秧机144台．农机总动力43．8万千瓦。2006年以来,江宁区认真组织开展”创建平安农机,促进新农村建设”活动,取得了显著成效。基层街道农机安全管理组织健全,落实了农机安全生产百分考核体制。目前,全区已建成“平安农机示范街道”3个,     

高性能混凝土配合比设计方法

高性能混凝土泛指具有高强度、高耐久性与高工作性的混凝土.文章从原材料品质、配合比参数确定的技术要点及配合比设计等方面,阐述了混凝土实现高性能的配合比设计方法.     

富来威插秧机走出国门

日前,随着第一批富来威2Z-455插秧机远赴东南亚,标志着具有自主知识产权的国内新一代高性能插秧机,已不仅能够满足国内需要,而且有能     

超高性能混凝土在桥面铺装中的应用研究

超高性能混凝土(简称UHPC)是目前国内较为推广的一种新型混凝土材料。依托某钢箱梁桥梁工程项目,研究超高性能混凝土桥面铺装在项目中的应用,分析其原材料配比及工程施工技术要点。现场取样试验结果表明：各项试验指标均满足规范要求,且性能相比普通混凝土有较大的提高。     

夯实基础突出重点努力实现农机职业技能鉴定工作新跨越

泰州市农机职业技能鉴定站在泰州市农委的正确领导下,在省农机职业技能鉴定站的指导下,结合泰州地区实际,采取扎实有效的措施,两年来,共培训鉴定了联合收割机驾驶员725人,农机修理     

新胎上市

顶级高性能轮胎米其林Pilot Super Sport登陆中国2011年5月12日，米其林集团宣布，旗下Pilot系列运动轮胎的顶级产品——米其林Piot Super Sport正式进入亚洲、登陆中国。作为米其林超高性能运动轮胎产品，Pilot Super Sport凭借来自于勒芒24小时耐力赛的冠军配方和技术，在满足顶级跑车和超高性能汽车车主追求终极驾驶乐趣的同时