叶面喷肥对强筋小麦产量和品质的影响

研究了在中、高肥力壤质潮土上叶面喷施不同品种肥料对强筋小麦产量和品质的影响,结果表明:基础产量为4 500~6 500 kg/hm2的试验点上喷施0.3%磷酸二氢钾、0.2%硫酸锌、0.05%钼酸铵均有较好的增产效果;喷施2%尿素或0.3%磷酸二氢钾可提高小麦籽粒粗蛋白含量。基础产量达7 000 kg/hm2的试验点喷肥对小麦产量及粗蛋白含量无显著影响。     

动物育种规划最优化研究进展

围绕动物育种规划最优化研究进展加以综述,在回顾动物育种规划最优化方法发展过程的基础上,重点介绍了动物育种目标、杂交繁育体系的优化问题和ＭＯＥＴ核心群育种规划研究３ 个方面的内容。     

Estimated Breeding Value in Iranian Buffaloes

This study was conducted from 1992-2002 on 65,534 individual milk records and fat percentage in 473 herds, in six provinces of Khuzestan, Mazndaran, W. Azerbaijan, E. Azerbaijan, Ardabil and Gilan. The data was analyzed by SAS sotfware using GLM procedure. The heritability and breeding value of 1,195 animals were calculated by DFRML procedure. The average milk yield per lactation, days of lactation, fat percentage and LSM of fat percentage were 1,513 kg, 202 days, 5.04 and 6.77, respectively. The estimated heritability of milk was 0.16. The LSM of average milk production in the provinces of Gilan, Mazandaran, E. Azerbaijan, W. Azerbaijan, Khuzestan and Ardabil were： 1,452, 1,586, 1,382, 1,183, 2,135 and 1,189 kg, respectively. These results indicated that Khuzestan province has the highest potential in the field of milk production. The top five highest breeding value bulls have been introduced to artificial insemination＇s station in the city of Uremia.     

株行距及穴苗数的配置对寒地水稻产量和品质的影响

为明确垦稻26和龙粳31高产优质栽培的株行距和穴苗数处理,采取裂区设计进行试验研究。结果表明,最优群体因品种而异,垦稻26在株距10cm、行距30cm、5苗/穴产量最佳,龙粳31则以株距13.3cm、行距27cm、9苗/穴产量最佳;垦稻26在5苗/穴、行株距30cm×10cm处理,有利于提高稻米的碾磨品质,不利于改善稻米的外观品质,营养品质较低,利于改善稻米的食味品质,且食味评分值高达86.5,显著高于最低处理;龙粳31在5苗/穴、行株距27cm×13.3cm处理,碾磨品质较高,不利于营养品质和外观品质的改善,食味品质得到明显改善,食味评分值高达86.0,与最低处理差异达显著水平。因此,高产优质栽培要因品种选择适宜的穴苗数和株行距,是实现水稻高产优质最为快捷、最为经济有效的措施。     

烟草有机酸研究进展

综述了烟草有机酸的种类及其对烟叶品质的影响,阐述了不同烟草品种、地域、烟叶的组织结构、外源化学物质等对烟叶有机酸含量的影响,并提出了现阶段所存在的问题和对今后研究方向的展望。     

科技期刊编辑应具备的素质刍议

编辑是科技期刊出版工作的主角，其思维方式左右着科技期刊的总体设计，他对科技期刊出版的全过程、科技期刊的内容质量、论文的取舍起着决定性的作用。本文通过分析编辑对科技期刊出版的影响，指出编辑的素质是影响科技期刊质量的关键，并论述了在新时期下，为了提高科技期刊的质量，科技期刊编辑须具备以下素质：有较高的政治素质及良好的职业道德；有一定的学术水平和相关的专业知识；拥有广博的知识、必要的文学修养；掌握编辑出版专业知识；有一定的社会活动和组织能力等。     

丰产抗病偏高糖甜菜新品种ZM201的选育

ZM201是中国农业科学院甜菜研究所和美国BetaSeed公司合作选育的甜菜二倍体单胚雄不育杂交种.2001年以单胚二倍体雄性不育系Beta96186M为母本,以二倍体有粉系PT37136为父本,配制杂交组合.该品种丰产性好,舍糖率较高,抗丛根病和褐斑病,耐根腐病,适应性广,块根品质好.在2005～2006年的国家甜菜品种区域试验中,全国两年42个试验点次平均根产量60770.0kg/hm2,比对照品种提高16.6%;平均含糖率17.5%,比对照品种提高0.1度;平均产搪量10631.4kg/hm2,比对照品种提高18.0%;时褐斑病、黄化毒病和白粉病的抗性与对照相仿,对根腐病、丛根病的抗性明显优于对照.在2006年的国家甜菜品种生产试验中,14个试验点平均根产量55039.7kg/hm2,比对照品种提高14.5%;平均含糖率18.6%,比对照品种提高0.4,度;平均产糖量10163.1 kg/hm2,比对照品种提高17.6%.该品种适宜在东北、西北和华北三大甜菜产区种植推广.     

浅谈高校图书馆队伍建设

高校图书馆专业队伍建设是整个高校图书馆事业发展中一个关键性的问题。通过对高校图书馆的队伍现状进行分析,论述了高校图书馆对馆员素质的具体要求,阐释了高素质馆员队伍在高校图书馆现代化建设中的作用,并对如何建设高素质的馆员队伍提出了对策。     

土壤水分对烤烟生长的影响研究

针对江西的气候特点、烤烟的生产现状,进行了大田烤烟各生育期的灌水和对照（不灌水）对比试验。结果表明：适当地增加土壤水分,有利于叶面积的扩展、根系的伸展和养分的吸收,烤烟的生长速度加快;灌水后的叶温与气温差小;灌水可以改善光合特性,促进光合产物的积累和分配,从而提高烟叶的产量和品质。     

Salt stress and mungbean [Vigna radiata (L.) Wilczek]: effects,physiological perspective and management practices for alleviating salinity

Mungbean is an important food grain legume with high economic status. It has an excellent source of dietary protein and nutritional health benefits, particularly for the vegetarians. It increases soil fertility and also plays an imperative role in major cropping systems due to its short life span. Production of mungbean is still decreasing due to its susceptibility towards various environmental stress factors. Salt stress is one of the most prevailing abiotic stress imposing threats for agriculture food crops along with increasing world population and limited natural resources. Fewer efforts have been made to develop an improved variety of mungbean. The present review summarizes the adverse effects of salt stress and mungbean response at the physiological and molecular level. It covers recent studies on introgression of useful traits in mungbean for its better adaptability and survival under stressed conditions. Modern biotechnological approaches and traditional breeding methods may assist the development of salt-tolerant cultivars of mungbean for salinity-affected area in arid and semi-arid regions. Researchers involved in this area should keep this goal on priority for sustainable mungbean production. Availability of protein-rich food may help to reduce the problem of malnutrition in poor families and national food security issue for a continuous rising population.