玉米制种常见问题及其提高质量的措施

随着我国农业的飞速发展,玉米单产的不断提高,我国杂交玉米种植面积不断上升,玉米杂交种的需求量也随之增加,制种面积不断扩大.我国玉米制种面积不断扩大的同时,因自然灾害、环境条件及技术等造成的种子质量不合格、减产减收甚至绝收现象时有发生,给制种单位和制种农户带来严重经济损失,大量的劣质种子也给农业生产带来严重后果.为此,本文分析了在实际生产过程中时常出现一些意想不到的问题,同时提出了若干玉米制种的高产措施.     

玉米生产应用杂交制种高产的分析

随着我国农业的飞速发展,玉米单产的不断提高,近年来,我国杂交玉米种植面积不断上升,玉米杂交种的需求量也随之增加,制种面积不断扩大.我国玉米制种面积不断扩大的同时,因自然灾害、环境条件及技术等造成的种子质量不合格、减产减收甚至绝收现象时有发生,给制种单位和制种农户带来严重经济损失,大量的劣质种子也给农业生产带来严重后果.本文针对这一问题,提出了有效的杂交玉米制种的技术措施.     

玉米生产应用杂交制种高产的分析

随着我国农业的飞速发展，玉米单产的不断提高，近年来，我国杂交玉米种植面积不断上升，玉米杂交种的需求量也随之增加，制种面积不断扩大。我国玉米制种面积不断扩大的同时，因自然灾害、环境条件及技术等造成的种子质量不合格、减产减收甚至绝收现象时有发生，给制种单位和制种农户带来严重经济损失，大量的劣质种子也给农业生产带来严重后果。本文针对这一问题，提出了有效的杂交玉米制种的技术措施。     

小议杂交玉米高产制种的技术措施

随着我国农业的飞速发展、玉米单产的不断提高，近年来，我国杂交玉米种植面积不断上升，玉米杂交种的需求量也随之增加、制种面积不断扩大。我国玉米制种面积不断扩大的同时，因自然灾害、环境条件及技术等造成的种子质量不合格、减产减收甚至绝收现象时有发生，给制种单位和制种农户带来严重经济损失，大量的劣质种子也给农业生产带来严重后果。针对这一问题，提出了有效的杂交玉米制种的技术措施。     

探讨杂交玉米高产制种技术

玉米杂交是农业丰产的关键,而杂交种产量的高低及质量的好坏,直接影响到制种单位的经济效益。随着我国农业的飞速发展,玉米单产的不断提高,我国玉米制种面积不断扩大的同时,因自然灾害、环境条件及技术等造成的种子质量不合格、减产减收甚至绝收现象时有发生,给制种单位和制种农户带来严重的经济损失,大量劣质种子也给农业生产带来严重后果。针对这一问题,提出了有效的杂交玉米制种技术措施。     

规范管理出良种

种子作为农业生产中特殊的、不可替代的、最基本的农业生产资料,是农业科学技术和各种农业生产资料发挥作用的载体,是决定农业增产增收的主要因素,种子质量的好坏直接关系着农业和农村经济的发展。山西省屯玉种业(集团)公司是国家种子产业化和杂交玉米种子质量保证体系试点单位,被农业部全国农业技术推广中心确定为质量监制单位和玉米亲本种子质量认证试点,被列为全国种子工程建设示范基地。 强化组织领导,相互制约协调,建立多层次质量管理体系。屯留县把玉米制种工作作为发展农村经济的重要工作来抓,由行政一把手亲自抓、负总责,层层签定质量责任书,结合省、地制定了种子生产地方标准,开展“种子杯”竞赛活动,把玉米制种作为考核干部的一项内容,建     

玉米制种常见问题及解决对策的研究

在玉米的杂交制种生产过程中，影响种子产量和质量关键是去杂抽雄不及时，自交株率上升或花期不遏后期种子脱水慢，造成霉变冻害、发芽率降低等问题。因此为了提高制种的产量和质量，必须改变生产条件，制定必要的措施，及时干净彻底的做到超前抽雄、加强管理，保证及时迅速脱水，生产出纯度高质量好的优质种子。为此分析了在实际生产过程中时常出现的一些问题，同时提出了若干玉米制种的高产措施。     

提高玉米制种过程质量的措施探析

玉米杂交种的不断更新换代,对提高玉米产量起到广很大的推动作用,据统计,农作物中玉米品种的更新对粮食增产的贡献最大,但从全国来看,玉米杂交种纯度的合格率仍然很低,而作为杂交种,玉米制种质量的好坏直接关系到玉米生产的发展。为此,分析了在实际生产过程中时常出现一些意想不到的问题,同时提出了若干玉米制种的高产措施。     

浅谈玉米增产种植新技术

玉米自引入我国之后一直为解决我国的粮食问题作出突出的贡献，同时也是世界总产量最高的粮食作物。其作为我国首屈一指的经济作物，在不断扩大种植面积的同时，对于产量的增加也显得尤为必要。这就有赖于玉米种植技术的不断创新，以及政府对于新技术坚持不懈的推广。本文从土壤条件、种植方式、以及可持续发展新思路三个方面选取三种玉米增产种植新技术，对三种技术进行介绍，概述操作方法，探讨技术对于玉米种植区域的适应性，并且对于农业新技术的推广提出初步的建议。     

论玉米制种产量和质量的影响因素及其提高措施

玉米杂交种的不断更新换代，对提高玉米产量起到很大的推动作用，据统计，农作物中玉米品种的更新对粮食增产的贡献最大，但从全国来看，玉米杂交种纯度的合格率仍然很低，而作为杂交种，玉米制种质量的好坏直接关系到玉米生产的发展。因此，如何在提高玉米制种产量的同时，提高制种质量，是每个制种单位和生产者关心的问题。     

小议玉米种子的贮藏方法及检查措施

玉米种子安全储藏的关键是提高入库质量,降低种子水分。玉米种子储藏有穗藏法和粒藏法两种,各地可根据气候条件、仓房条件和种子质量选择采用。相对湿度低于80%的地区以穗藏为宜,相对湿度超过80%的地区,则以粒藏为宜。那么,如何对玉米种子进行贮藏是至关重要的。实践证明,玉米种子的安全贮藏很重要,但也很难。为此,本文针对玉米种子贮藏技术进行简要探讨。     

从三菱汽车的惨痛教训谈质量意识的强化

文章从频频发生的三菱汽车交通安全事故入手，分析并指出了三菱汽车质量问题的根本原因在于三菱的质量道德低下、质量法制意识淡薄。文章透过三菱汽车质量问题导致的严重后果论证了质量意识的重要性，并从质量法制观念、质量道德、质量忧患意识、品牌意识和企业质量制度等五个方面探讨了我国企业应如何强化质量意识。     

The human resource barriers to managing quality in China

China has one of the fastest growing economies in the world. The challenge for the future is likely to be the extent to which Chinese operations can utilize modern management techniques to improve product and service quality. This paper explores some of the problems that were affecting the management of quality within two foreigninvested enterprises (FIEs) based in the Shenzhen region of China. The paper argues that the provision of new factories and machinery was not sufficient in itself to ensure the maintenance of quality standards. Quality management in the West has become synonymous with increased employee involvement and developing customer-orientated cultures (Rees, 1998). The success or otherwise of quality management initiatives therefore depends upon the co-operation and enthusiasm of employees (Wilkinson et al ., 1998; Oliver and Wilkinson, 1992). Quality management within the case companies was hampered by the prevailing work ethic and was hindered by inadequate human resource and management systems. The study highlighted poor standards of training, dissatisfaction over levels of remuneration, and poor communication within the case companies. The paper argues that the problems experienced by the companies were inextricably linked to aspects of China's historical development. This history has helped to engender employee attitudes and behaviours that are poorly understood. Models of quality management are needed which are sensitive to the Chinese operating context.     

PRIVATE EDUCATION AND 'EDUCATION FOR ALL'

Government schools cannot provide quality education for all. If the goal of education for all is to be achieved, the private sector must be encouraged and not squeezed out. Development agencies need to wake up to this because large-scale government education leads to failure on a large scale that can cause serious harm to the poor.     

Housing the Urban Poor in Developing Countries

A bstract . Governments in developing countries will face increasingly serious problems in providing adequate shelter for the more than 25 million households that will be added to their urban populations by the end of this century A review of the magnitude of their housing deficits discloses the growing need for low-cost shelter. Public housing, sites-and-services, slum upgrading , and government assisted self-help-programs have failed to provide sufficient housing to meet the needs of the poor. These must be supplemented by programs that reduce the costs of housing construction and increase the participation of communities, the informal sector, and private enterprise in providing low-cost housing. Analysis of the results of conventional government housing programs offers little hope of an adequate amelioration of the problem.     

HORIZONTAL MISMATCH BETWEEN EMPLOYMENT AND FIELD OF EDUCATION: EVIDENCE FROM A SYSTEMATIC LITERATURE REVIEW

This paper provides a systematic review of the growing literature on the poor match between employees’ field degree and the job requirements, also referred to as horizontal mismatch. We identify the different definitions used in the literature and find that each measure of horizontal mismatch yields substantially different incidence rates. We discuss the validity of the different measures and conclude that a more uniform definition of horizontal mismatch is needed. The likelihood of horizontal mismatch is among other things determined by the extent to which employees possess general skills as opposed to occupation‐specific skills, and, it appears to be more frequently present among older workers. Compared to well‐matched employees, horizontally mismatched workers generally incur a wage penalty, are less satisfied with their jobs, and are more likely to regret their study programme. The ensuing findings offer guidance to prevent horizontal mismatch as well as a roadmap for future research.     

特仑苏牛奶品牌的定位研究

特仑苏牛奶品牌是如何定位的呢?文中首先对中国乳制品市场环境进行分析,发现如下特点:我国乳制品需求迅速增长;消费水平不断升级;但行业竞争激烈;产品同质化严重。然后,用STP定位战略具体分析了特仑苏品牌的定位过程,得出:特仑苏定位于高端液态奶市场,它的目标消费群体是都市高端家庭、都市单身白领和注重生活品质、有较强个性的青年。     

高校科技档案归档工作中存在的问题及对策研究

随着建设创新型国家战略的稳步推进,高校科研工作队伍正在迅速壮大,科研资金投入也在快速增长,科研成果在规模和层次上呈现出前所未有的良好发展态势。但是科研人员重视科研成果的申报、发表与获奖,轻视科研档案积累的情况普遍存在。这一现象严重制约了高校科研工作的可持续发展。本文在分析高校科技管理工作中档案归档方面存在问题的基础上提出了相应对策,以期引起高校科技工作者的重视,从而推动高校科研的可持续发展。     

Identification of triggers of U.S. yield curve movements

We present new evidence for understanding the sources of daily movements in U.S. Treasury yields. We use a novel narrative approach combined with Bayesian inference to identify news-based triggers of yield movements between 2001 and 2019. We show that the U.S. macroeconomic news was the core trigger of U.S. Treasury yield volatility over most of the period under analysis. However, the importance of non-macroeconomic news associated with capital flight has increased significantly since 2011, and they became the dominant source of movements in the long end of the U.S. yield curve after 2016. This highlights the growing importance of the U.S. Treasuries as a safe haven asset and implies possible partial loosening of the relation between U.S. Treasury yields and the U.S. business cycle.     

浅谈高校考风建设与诚信教育

考风是校风的重要组成部分,是一所大学传统底蕴和办学理念的集中体现。良好的考风考纪是提高人才培养质量的必要因素,是维护学生评价工作的严肃性和权威性的保证。可是在当前高校中,考风不正是一个相当普遍的问题,这不仅违反了考试公平、公正原则,而且无法正常反映出教与学的效果,考风不正的原因有很多,诚信教育的缺失是主要方面。本文对当前高校考风中存在的种种问题进行了系统分析和总结,然后针对这些问题,从多个方面入手提出相应的对策。