猴头的瓶栽生产技术

猴头菌是一种木材腐生菌,能将木质素、纤维素、半纤维素等高分子糖类物质分解为简单的葡萄糖后吸收利用,猴头菌生长的基质材料用于猴头瓶栽培生产技术及猴头发生畸形菇的原因及防治。     

U盘模块在作物蒸发蒸腾量测定中的应用

为了实现数据信息方便快捷传输,基于MSP430单片机的多通道作物蒸发蒸腾量测定仪,将U盘作为存储介质,实现了单片机与U盘的直接通讯。U盘模块通过SPI总线与MSP430F169进行数据通讯,方法简单、易于操作,克服了数据采集器与计算机数据传输对计算机环境的依赖性,对于野外农林业数据信息的采集具有重要意义。     

夏大豆齐黄29号配套栽培技术

齐黄29号是由山东省农业科学院作物研究所以济3045作母本、潍8640作父本有性杂交，经系谱选育而成的早熟、高产、高油、抗病虫夏大豆新品种，2003年通过国家审定（审定编号：国审豆2003019）。     

向日葵病程相关蛋白HaPR1基因的克隆与功能研究

病程相关蛋白(pathogenesis-related proteins)经常被用作植物抗病反应的分子标记。本文在核盘菌诱导向日葵转录组文库的基础上克隆1个病程相关蛋白1基因HaPR1的cDNA全长序列,并进行了表达模式和功能分析。结果表明, 该基因cDNA全长开放阅读框为489 bp,编码162个氨基酸,分子量为17.52 kD,等电点为8.19,具有6个保守半胱氨酸,4个保守的allergen V5/Tpx-1结构域,GenBank登录号为KR071874。经比较HaPR1与多种物种PR1高度同源。实时荧光定量PCR检测结果表明,HaPR1相对表达量在向日葵叶中最高,根中其次,茎中最低。干旱、盐、草酸、核盘菌及其代谢物均可显著诱导其表达。利用农杆菌介导法将该基因导入烟草,提高了转基因株系对核盘菌的抗性。对抗性株系烟草防御酶活性及丙二醛含量测定发现转基因烟草叶片在核盘菌胁迫下显著提高了SOD、POD和CAT活性,降低了MDA含量。初步推断HaPR1具有抗核盘菌的功能。     

金美夏油桃在江苏徐州的表现及丰产栽培技术

2010—2014年在江苏省徐州市铜山区试栽黄肉油桃品种金美夏,结果表明,该品种生长势较旺,果个大,果面光洁,色泽艳,硬溶质,耐贮运,丰产,2~5年生树每667 m2产量分别为540、1 420、2 819、2 805 kg,综合性状优良,经济效益显著。     

研究型大学条件建设初探

该文通过对研究型大学起源的探究，总结归纳了研究型大学的内涵和基本特征，并在此基础上提出研究型大学应具备创新的现代化办学理念、先进的学科和一流的人才培养、重要的科学贡献和良好的学术声誉、杰出的校长和精良的管理队伍、一流的教师资源和科学研究水平、充足的办学经费和物质保障等基本条件。     

6个栓皮栎种源种子形态及其幼苗生长的比较

[Objective]To compare the differences of seed morphological characters among provinces of Quercus variabilis Bl.,and explore the adaptive growth status of seedlings growing in the central distribution area. [Method]The seeds of 6 Q. variabilis provenances from six provinceswerecollected, and the seedlings were cultivated and transplanted to experimental field in the centre of natural distribution range (Wuhan Jiufeng National Forest Park), then the seed morphology and one-year seedling growth traitswere surveyed. [Result](1)There were significantor extremely significantdifferences among provenances in seed length, seed width, seed length/width ratio and 100-seed mass, the order of seed length among provenances was Beijing Provenance (22.28 mm),Hubei Provenance (22.10 mm), He'nan Provenance (20.80 mm), Shaanxi Provenance (19.57 mm), Yunnan Provenance (18.93 mm)and Liaoning Provenance (18.81 mm), the seed width of Beijing Provenance (19.71 mm) and Hubei Provenance (19.16 mm) was higher than that of the others, the seed length/width ratio of He'nan Provenance (1.38) was extremely significantly higher than that of the others; (2)There were significant or extremely significant differences among provenances in seedling height, ground diameter, leaf number, branching number and seedling height/ground diameter, the Beijing Provenance and Hubei Provenance were better in seedling height and leaf number, which were respectively 19.54 cm and 20.26 cm, 8.32 leaves and 9.50 leaves; (3)A decreasing trend with time for seedling growth traits among provenances was found; (4)There was a positive relationship between seed morphological characters and seedling growth traits except seed length/width ratio; the leaf number was significantly related to ground diameter and branching number and the seedling height and leaf number were closely related to the seed morphological characters; (5)It showed a decreasing trend with the growth time in the relationship between seedling growth traits and 100-seed mass. [Conclusion]The seedlings of Beijing Provenance and Hubei Provenance grew better in the experimental field which might be related to their larger seed mass, and the Yunnan Provenance in the south margin and the Liaoning Provenance in the north margin of distribution area of Q. variabilis grew weaker than the provenances in the centre of distribution area.With the effect of climate change, provenances in the margin of distribution area may lose in the community competition in the seedling stage if it cannot take advantage of its dispersal and settlement and affected by the disadvantage of growth and competition, so that the distribution and population renewal would surely be affected.     

智能剩余电流动作断路器保护动作值设置

随着农网改造升级的不断深入,配电变压器低压侧JP柜内的控制保护装置普通使用了智能剩余电流动作断路器。该断路器具有漏电、过流、短路等保护功能,以及自动重合闸、剩余电流显示、实时负荷电流显示、动作状态指示、跳闸数据显示等实用功能,为农村低压电网安全运行提供了保障。     

车辆防抱制动系统滑移率自适应控制策略

分析了车辆制动过程的数学模型,为了克服模型非线性、变参数对系统的影响,采用了参考模型自适应控制.为了适应各种路况条件,使车辆以比较理想的滑移率制动,缩短制动时间,提出了滑移率自适应调节方法.通过仿真证明,该方法简单可行,控制效果好.     

玉米苞叶力学特性试验研究——基于玉米联合收获机剥皮机构

玉米是我国重要的粮食作物,目前多数地区的玉米收获仍然以手工为主,收获环节已经成为制约玉米机械化生产发展的瓶颈。为此,以先玉335为样本,在测定玉米苞叶纵向和横向拉力的基础之上,分析玉米苞叶纵向拉力与苞叶层数的关系、横向拉力与玉米苞叶层数的关系以及苞叶纵向拉力与横向拉力之间的关系。试验结果表明:玉米苞叶纵向拉力的最大值为86.892 9N,最小值为57.357 6N;横向拉力的最大值为10.001 7N,最小值为3.771 2N;纵向拉力和横向拉力由外层到内层均呈减小趋势;玉米苞叶单位截面上纵向平均拉力约为横向拉力的8～10倍。因此,设计玉米联合收获机剥皮机构过程中,在权衡苞叶剥净率与籽粒破碎率的同时,应综合考虑苞叶纵向和横向的拉力。