大中型自走式玉米联合收割机的正确使用与维护

<正>近年来,随着我县主要农作物种植结构的调整,我县玉米种植面积逐年加大,至目前,已由2010年的8万hm2激增至2013的10.67万hm2。同时,由于国家农机购置补贴政策的激励和拉动作用,我县大中型自走式玉米联合收获机猛增,已由2010年前200余台激增到2013年1400余台,玉米联合收获机将是农民新的致富工具。因此,玉米联合收割机的正确使用与维护保养等关键技术知识的普及教育,将是农机化技术学校亟待解决的课题。下面,我们把在实践中摸索和总结出的一点浅显的经验写出来,与大家共享,希望能对大家有所帮助。1自走式玉米联合收割机的正确使用1.1作业前的准备     

茶叶中锗含量的测定

在苏木色精-偏钒酸铵体系中,锗可产生一灵敏的极谱催化波,峰电位为-0.57V(Vs.S.C.E),检测下限为0.005ng/ml,线性范围为0.01ng-88ng/ml.用催化极谱法测定茶叶中锗,兼具灵敏、准确、快速、简便、选择性好的优点,可用于茶叶样品中锗的定量测定.     

省级农科院柔性引才的思考

分析了省级农业科研单位在高层次人才引进上面临的困难,阐述了柔性引进人才的优势,提出了省级农科院柔性引进人才工作在政策、管理机制和保障等方面的几点建议。     

如何诊断与防治辣椒根部病害

春季辣椒定植后,极易发生疫病、根腐病和青枯病,造成植株成片枯死,使产量受到严重影响,损失惨重。为减轻病害的发生,做到对症下药,及时防治,通过近几年的生产实践将其发病症状及防治方法介绍如下：     

推进畜牧业的科学发展

当前,江苏畜牧业发展面临一些压力和问题。一是总量稳定有压力;二是质量安全监管形势严峻。江苏畜禽饲养量和流通量大,外来疫情防控难度大;三是畜牧业比重偏低;四是资源环境制约加剧。主要饲料原料货缺价高,劳动力价格大幅提高。同时,规模养殖用地供应不足、生态保护要求提高等问题也日益突出。     

发展生态高效产业打造现代林业强市

胡锦涛总书记在十七大报告中强调：“建设生态文明,基本形成节约能源资源和保护生态环境的产业结构、增长方式、消费模式。”实践证明,发展林业产业既能够为生态环境建设和生态文化建设提供强有力的物质支撑,还能够增强林业对社会各种资源和各种主体的吸引力,加速现代林业建设的进程。     

Testing Method and Heat insulating Principle of the Thermal Insulation Coatings for External Wall

Abstract：In the modern society due to the increasingly high requirements on the environment circumstances, it is imperative to study the insulation coating.This paper introduces the testing method and heat insulating principle of the building external wal     

Eco thinking Model of Modern Landscape Design PhilosophiesIllustrated with a Case Study of South Entrance of Tongniuling in Dalian

We discussed the trends and challenges of rapid urbanization for modern landscape from a development viewpoint. We analyzed the problems of modern landscape in P. R. China. Based on ecological principles, we proposed a corresponding eco-thinking model composing eco-thinking of vision, culture, environmental protection and public participation. We carried out a case study of the south entrance of Tongniuling Scenic Spot in Dalian. We constructed diverse scenarios according to the leading factors selected by factor analysis. We assessed them with the Delphi method and public anticipation. The priority rating was, in order, scenario number 2 (48.3%), number 1 (30.5%) and number 3 (15.7%). Scenario number 2 was the best for its prominent visual image, typical culture presentation, weaker disturbance and reasonable cost. Scenario numbers 1 and 3 took culture and environment as leading factors, respectively. The cost of the former was low while the latter was high. Our work indicates that the eco-thinking model, as a brand-new thinking for modern landscape, is feasible.     

R-μ-T Relations for a Single degree of freedom System

Based on summary and analysis of the main research findings regarding R μ T relations for a single degree of freedom system, the following two important conclusions can be drawn: 1) In general, these research findings are consistent with each other. The R μ T rule can be an important reference criterion for seismic design. 2) Proper design and extendibility ensure the relatively satisfactory performance of the structure under stronger earthquake action.     

Gas seepage characteristics of briquette samples in a stress field

A new apparatus was constructed to investigate the impact of various loading conditions on the permeability of coal specimens. Test results show that loading condition has a definite influence on the permeability of coal specimens. Higher pressures lead to lower permeability, and it seems that the confining pressure has a greater effect than the axial stress does, while the permeability is related exponentially to applied stresses. Based on the experimental results, an equation governing gas seeping through coal seams is deduced within the frame of Darcys Law, which may be helpful to understand the permeability properties of stressed coal seams and to improve the drainage of gassy coal beds.