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论述中等农业职业学校加强种植类专业建设的必要性,分析中等农业职业学校种植类专业建设存在的问题,提出加强种植类专业建设的措施与方法,为中等农业职业学校加强专业建设,突出办学特色,打造名牌专业,服务新农村建设和现代农业发展,促进学校持续健康发展提供参考。 相似文献
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新世纪高等农林院校实验教学改革初探 总被引：7，自引：1，他引：6
农林科实验教学改革是新世纪学校整体推进教学改革的重要组成部分。本结合主等农林院校实验教学实际,以植物生产类专业为对象有,提出了实验教学改革的目标,具体内容和实施方案,为农林科实验教学改革提供了有益的思路。 相似文献
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本文以沈阳农业大学资源与环境类专业为研究对象，以学生为中心，以社会需求为引领，紧密结合新农科建设要求，开展了资源与环境类专业结构优化和改造提升路径的研究与实践。分析了资源与环境类专业存在的问题，创建了招生就业认可度、社会需求度、产业适应度的“三维度”评价指标体系，依据专业评价的结果采取增、停、并、转的方式优化了资源与环境类专业的结构布局；从修订培养方案、优化课程体系、强化课程建设、建立实践基地、创新教学模式等方面建立了专业内涵提升的“五项核心工程”,构建了“厚基础、强实践、重创新、增潜力”新农科背景下资源与环境类专业人才培养新模式，提高了资源环境类专业的竞争能力，为培养高素质复合型人才提供了强有力的支撑。 相似文献
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张阳春 《国家林业局管理干部学院学报》2004,(2):62-64
做好高等林业院校林科学生的思想政治工作,事关我国林业建设和生态环境建设高级后备人才的培养.当前高等林业院校林科学生思想政治工作面临着学生专业思想不够稳定、农村生源学生占了多数、就业压力巨大等困难.高等林业院校的思想政治工作者必须有的放矢地加强对学生的专业思想教育,帮助他们找准发展方向,加强对贫困学生的资金帮扶,仔细做好学生的心理咨询工作. 相似文献
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我校在探索构建林科教结合产学研一体化林业技术技能型培养模式过程中,顺应生态文明建设要求,结合现代林业技术专业的人才培养特色和专业培养目标,深刻理解林科教结合产学研一体化林业技术技能型培养模式的丰富内涵,在林科教结合产学研一体化林业技术技能型培养模式的课程体系、师资队伍建设、实训基地、运行机制、培训平台等方面进行了有益探索和大胆创新,为林业类中职学校的人才培养模式改革开辟了新的路径. 相似文献
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陈素珊 《浙江大学学报(农业与生命科学版)》2006,32(1):114-118
生物系统工程专业是在改造原农业工程类专业的基础上,通过拓宽农业工程学科的研究领域在国内率先设立的新专业.本文从理论和实践上,对专业改造的背景与基础、新专业人才培养的目标与模式、新专业创建的手段与机制等进行了积极的探索. 相似文献
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以河北农业大学畜牧兽医类专业为例,结合现存主要“校企合作”模式,从加强实践实训地建设、建立企业特色班、与企业建立联合实验室、创建中层研究生班、举办“企业家论坛”4个方面构建了河北农业大学畜牧兽医类专业“校企合作”模式,针对现存模式存在的问题,提出了相应的建议,包括完善相关法律法规、加大对学校的资金投入、加强学校与企业的联合研究。 相似文献
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Chakhalian J Freeland JW Habermeier HU Cristiani G Khaliullin G van Veenendaal M Keimer B 《Science (New York, N.Y.)》2007,318(5853):1114-1117
Orbital reconstructions and covalent bonding must be considered as important factors in the rational design of oxide heterostructures with engineered physical properties. We have investigated the interface between high-temperature superconducting (Y,Ca)Ba(2)Cu3O7 and metallic La(0.67)Ca(0.33)MnO3 by resonant x-ray spectroscopy. A charge of about -0.2 electron is transferred from Mn to Cu ions across the interface and induces a major reconstruction of the orbital occupation and orbital symmetry in the interfacial CuO2 layers. In particular, the Cu d(3z(2)-r(2)) orbital, which is fully occupied and electronically inactive in the bulk, is partially occupied at the interface. Supported by exact-diagonalization calculations, these data indicate the formation of a strong chemical bond between Cu and Mn atoms across the interface. Orbital reconstructions and associated covalent bonding are thus important factors in determining the physical properties of oxide heterostructures. 相似文献
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阐述了对既有房屋进行套建增层改造及功能改造的原因,介绍了可用于既有房屋套建增层改造及功能改造的结构形式、国内外的研究情况及作者近年来所开展的工程实践。提出了存在的问题及今后应开展的研究内容。 相似文献
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随着任京线年输量的逐渐下降，管道输油泵所做的无用功越来越多。为提高泵压的利用率，减少耗电量，对任京线雄县泵站的输油泵先后进行了三次拆级改造，并安装了一台小功率输油泵，以实现输油泵的经济运行。实践证明，这样改造大大降低了任京线的耗电量，降低了输油成本。对低输量输油管道而言，进行泵级组改造及安装小功率泵并不是最佳的节电措施。采用调速技术，使输油泵适应负荷变化，改变转速来调节输油泵的运行点，才是解决泵节 相似文献
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植株三维信息重构能为植株生长状态监测和精确喷雾施药提供有效数据。提出一种基于Kinect传感器技术的植株冠层三维数据测量的方法。由Kinect传感器进行植株彩色和深度图像数据的采集,提取和处理所采集的植株冠层目标有效三维信息,完成对植株深度数值和水平投影面积的计算。以规则形状物体与不规则植株为实验对象,对三维数据测量方法进行准确性实验测试,并将实验结果与人工测量结果进行比对。实验结果显示,该方法的深度和面积测量的准确性较高,深度测量误差小于1.0%,面积测量误差小于3.6%。选取温室吊兰作为场地实验对象,采用由测量机构和控制处理机构组成的冠层三维检测系统对吊兰冠层进行三维数据测量,并实时输出深度以及水平投影面积信息,其深度测量的相对误差为1.77%。研究表明,该方法具有较高的可行性,适用于温室植株冠层三维数据测量。 相似文献
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Stute M Forster M Frischkorn H Serejo A Clark JF Schlosser P Broecker WS Bonani G 《Science (New York, N.Y.)》1995,269(5222):379-383
A 30,000-year paleotemperature record derived from noble gases dissolved in carbon-14-dated ground water indicates that the climate in lowland Brazil (Piaui Province, 7 degrees S, 41.5 degrees W; altitude, 400 meters) was 5.4 degrees +/- 0.6 degrees C cooler during the last glacial maximum than today. This result suggests a rather uniform cooling of the Americas between 40 degrees S and 40 degrees N. A 5.4 degrees C cooling of tropical South America is consistent with pollen records, snow line reconstructions, and strontium/calcium ratios and delta(18)O coral records but is inconsistent with the sea-surface temperature reconstruction of CLIMAP (Climate: Long-Range Investigation, Mapping and Prediction). On the basis of these results, it appears that the tropical Americas are characterized by a temperature sensitivity comparable to that found in higher latitudes. 相似文献
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The Great Basin of the western United States has proven important for studies of Proterozoic and Paleozoic geology [2500 to 245 million years ago (Ma)] and has been central to the development of ideas about the mechanics of crustal shortening and extension. An understanding of the deformational history of this region during Mesozoic and Cenozoic time (245 Ma to the present) is required for palinspastic reconstruction of now isolated exposures of older geology in order to place these in an appropriate regional geographic context. Considerable advances in unraveling both the crustal shortening that took place during Mesozoic to early Cenozoic time (especially from about 150 to 50 Ma) and the extension of the past 37 million years have shown that earlier reconstructions need to be revised significantly. A new reconstruction is developed for rocks of middle Proterozoic to Early Cambrian age based on evidence that total shortening by generally east-vergent thrusts and folds was at least 104 to 135 kilometers and that the Great Basin as a whole accommodated approximately 250 kilometers of extension in the direction 287 degrees +/- 12 degrees between the Colorado Plateau and the Sierra Nevada. Extension is assumed to be equivalent at all latitudes because available paleomagnetic evidence suggests that the Sierra Nevada experienced little or no rotation with respect to the extension direction since the late Mesozoic. An estimate of the uncertainty in the amount of extension obtained from geological and paleomagnetic uncertainties increases northward from +/-56 kilometers at 36 degrees 30N to (-87)(+108) kilometers at 40 degrees N. On the basis of the reconstruction, the original width of the preserved part of the late Proterozoic and Early Cambrian basin was about 150 to 300 kilometers, about 60 percent of the present width, and the basin was oriented slightly more north-south with respect to present-day coordinates. 相似文献
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为解决以往我国森林植被恢复重建工作中存在的技术含量和管理水平低下的问题,根据与森林生态恢复工程相关的自然与社会科学原理及工程技术方法,提出了森林植被恢复重建工程系统集成的概念、技术流程和技术集成体系.技术流程包括:①森林退化的监测与诊断;②森林植被恢复重建工程的可行性分析;③集成规划与设计;④集成实施;⑤评估;⑥集成管理体系等.技术集成体系有:①森林植被恢复重建监测、诊断、发布与预测的集成技术;②不同层次退化森林生态系统的重构或重组集成技术;③森林生态系统生态--经济价值恢复的集成技术;④森林生态系统信息网络重构与延展的集成技术;⑤森林植被恢复重建工程管理的系统集成技术. 相似文献
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Whittaker JM Müller RD Leitchenkov G Stagg H Sdrolias M Gaina C Goncharov A 《Science (New York, N.Y.)》2007,318(5847):83-86
A marked bend in the Hawaiian-Emperor seamount chain supposedly resulted from a recent major reorganization of the plate-mantle system there 50 million years ago. Although alternative mantle-driven and plate-shifting hypotheses have been proposed, no contemporaneous circum-Pacific plate events have been identified. We report reconstructions for Australia and Antarctica that reveal a major plate reorganization between 50 and 53 million years ago. Revised Pacific Ocean sea-floor reconstructions suggest that subduction of the Pacific-Izanagi spreading ridge and subsequent Marianas/Tonga-Kermadec subduction initiation may have been the ultimate causes of these events. Thus, these plate reconstructions solve long-standing continental fit problems and improve constraints on the motion between East and West Antarctica and global plate circuit closure. 相似文献
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Articulated digital reconstructions of two diplodocid sauropods revealed cervical poses and feeding envelopes. The necks of Diplodocus and Apatosaurus were nearly straight but gently declined such that the heads, which were themselves angled downward relative to the neck, were close to ground level in their neutral, undeflected posture. Both necks were less flexible than conventionally depicted, and Diplodocus was less capable of lateral and dorsal curvature than Apatosaurus. The results suggest that these sauropods were adapted to ground feeding or low browsing, contrary to the view that diplodocid sauropods were high browsers. 相似文献