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当前,就业形势日益严峻,高等职业院校中"互联网+"创新创业教育成为高素质技术技能型人才培养的重要实践方式,同时也是顺应我国高等职业院校内涵发展的重要要求。本文首先对当前高等职业院校电子信息类学生"互联网+"创新创业教育人才培养中存在的问题进行了分析,然后对以"互联网+"为核心的大学生创新创业的教育模式进行了构建,从而有效地提升高等职业院校学生创新创业的教育质量。 相似文献
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随着我国创新驱动发展战略的实施,创新创业教育成为在产教融合环境下推动经济持续发展的关键。目前我国高职双创教育在理念、课程等方面仍存在许多问题。为进一步推进人才培养与行业发展的对接,更好地服务区域经济发展,文章构建了高职机电一体化专业的专业人才培养模式,通过构建实训平台,使创新实训与专业教学相结合、创新实践与企业实践相结合。以实际应用能力的提高为主线,构建了实践教学体系,建立科教融合、赛教融合、产教融合的人才培养模式。分析得出机电一体化专业创新型人才培养模式的有效开展离不开相关制度的支持与教师队伍质量的提高的结论。 相似文献
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为提升学生就业能力与岗位适配性,研究P-CDIO工程教育理念与创新创业教育模式相融合的人才培养模式.针对现代高职院校人才培养存在的问题,结合汽车检测与维修专业的就业特点,设计P-CDIO理念下创新创业人才培养模式方案,分析课程体系、教学模式、学生学习模式、考核方式等内容,以提升学生的综合职业能力与可持续发展能力. 相似文献
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工科高职院校将学生成人教育和成才教育有机结合,将学生思想教育和专业教育有机结合,将国家产业战略和教育战略有机结合,积极践行工匠精神,提升学生职业素养,培育未来大国工匠,培养创新创业人才。本文在确立构建工科类高职院校创新创业人才培养模式的基础上,构建由创新创业理论教学方法、创新创业实践教学模式、校企产学研合作教育模式等构成的工科类高职院校创新创业人才培养模式。 相似文献
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以兰州职业技术学院机电专业双创培养为基础,以提高学生创新创业能力和专业实践能力为目标,深化人才培养模式与创新创业教育教学改革,本着“面向全体、因材施教、结合专业、注重实践”的原则,从人才培养模式、课程体系、实践平台、师资队伍建设和教育教学评价体系5个角度阐述如何更好地将专业教育与创新创业教育深度融合,更好地将双创教育贯彻到人才培养全过程,多环节渗透创新创业精神和技能的培养,真正做到“专创融合”,本课题的研究对高职院校创新创业教育改革具有一定的参考价值。 相似文献
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"工学结合、订单式"人才培养模式是目前地方本科院校旅游教育发展的核心问题之一。目前,"1234"创新教学模式开始应用于地方本科院校旅游教育"工学结合、订单式"人才培养模式之中。文章结合湖南文理学院旅游管理专业在"工学结合、订单式"人才培养模式上大胆尝试"1234"创新教学模式的实践,论述了"1234"创新教学模式对"工学结合、订单式"人才培养模式优化人才培养方案方面的作用,并具体阐释了"1234"创新教学模式在"工学结合、订单式"人才培养模式中的具体实施措施。 相似文献
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不同水肥一体化方式和施肥量对烤烟生长、氮磷钾利用及烟叶产质量的影响 总被引：1，自引：0，他引：1
《灌溉排水学报》2019,(8)
【目的】寻找烤烟适宜的水肥一体化方式。【方法】通过田间试验研究了2种水肥一体化方式(滴灌施肥和浇灌施肥)和2种氮肥用量(100%推荐量和80%推荐量)对烤烟生长、氮磷钾利用及烟叶产量的影响。【结果】不同水肥一体化方式对烟株氮素累积量和利用率无显著影响(P>0.05),对磷素累积量和利用率均有显著影响(P<0.05),对烟株钾素累积量和利用率均有极显著影响(P<0.01),对烤烟旺长期最大叶宽和最大叶面积有极显著影响(P<0.01),对烤烟产量和产值有显著影响(P<0.05)。与滴灌施肥相比,浇灌施肥处理磷素累积量和利用率分别提高了21.1%～21.2%和20.9%～43.0%,钾素累积量和利用率分别下降了15.1%～19.6%和47.5%～49.1%,最大叶宽和最大叶面积分别减小了17.4%～22.4%和22.1%～24.4%,烤烟产量和产值分别下降了12.7%～16.2%和7.7%～20.2%;施肥(氮)水平对烟株氮素累积量有显著影响(P<0.05),对磷素和钾素累积量无显著影响(P>0.05),对烤烟农艺性状及产量均无显著影响(P>0.05)。【结论】与滴灌施肥相比,浇灌施肥促进了烤烟对磷素的吸收,但不利于氮素和钾素的累积利用。相对而言,减氮滴灌促进了烤烟对氮磷钾的吸收利用,并有利于烤烟产质量的形成和农田养分投入的减控,是更为科学合理的抗旱水肥一体化方式。 相似文献
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一株中温厌氧纤维素降解细菌的分离、鉴定及其系统发育分析 总被引：5，自引：1，他引：4
以树中心湿木为样品,富集分离获得一株具有较强纤维素分解能力的中温厌氧纤维素降解细菌CSZM-6.分离菌株革兰氏染色阴性,直杆或稍弯曲杆状,多数单生,少数成对或成串,部分菌体产芽孢.菌体大小为0.5μm×1.7～2.6μm,严格厌氧,最适生长温度40℃,最适pH6.5,以葡萄糖为底物时倍增时间8.0h.分离菌株在纤维素粉固体培养基中培养3周后,菌落为圆形或不规则形状,产黄色素,直径为0.5～4.0mm,水解圈直径为2.0～18.0mm.分离菌株不仅能利用纤维素、纤维二糖、葡萄糖等碳水化合物,还能利用未经处理的报纸、水稻秸秆、麦秆.发酵纤维素产乙醇、乙酸、H2、CO2、甲酸、丙酸、乳酸.在菌株CSZM-6的纤维素酶系中,只存在外切-β-1,4-葡聚糖酶(C1酶)和内切-β-1,4-葡聚糖酶(Cx酶)两种组分,最适温度分别为40℃和45℃.通过16SrDNA序列分析表明,菌株CSZM-6为梭菌属Clostridium,与C. papyrosolvens具有99.6%的相似性. 相似文献
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N. Katerji J.W. van Hoorn A. Hamdy F. Karam M. Mastrorilli 《Agricultural Water Management》1996,30(3):237-249
Maize and sunflower were grown in tanks filled with loam and clay, and were irrigated with water of three different levels of salinity. Predawn leaf-water potential and stomatal conductance were used as parameters for water stress. The predawn leaf-water potential of maize was higher than that of sunflower, but the effect of salinity and soil texture on the predawn leaf-water potential was the same for both crops. The stomatal conductance of sunflower was much higher and more severely affected by salinity and soil texture than the stomatal conductance of maize.
Although salinity had a more serious effect on the development of leaf area and canopy dry matter of sunflower, its effect on evapotranspiration and grain yield was the same for both crops. Soil texture had a stronger effect on the development of leaf area and canopy dry matter of sunflower, which also appeared in the evapotranspiration and grain yield, indicating that sunflower is more sensitive to drought than maize. 相似文献
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J. R. Philip 《Irrigation Science》1987,8(2):101-114
Summary We study the effect of surface resistance r (whether of monolayers on free water or plant diffusive resistance) on evaporation rate, energy balance, and microclimate, under advective conditions. We use power-law representations of the vertical profiles of mean windspeed and eddy diffusivity, and exploit two known similarity solutions, one for a step-function change of surface concentration, and the other for a step-function change of surface flux density. To a very close approximation, these two contrasting canonical advective problems yield the same (spatially variable) boundary layer transfer coefficient expressing the ratio of the surface flux perturbation to the surface concentration perturbation. Adopting this coefficient reduces the (spatially variable) surface energy balance for the advective boundary layer with surface resistance to a quadratic equation, with the solution yielding the fetch distances x at which the surface temperature assumes a given value To. With To (x) established thus, the other significant properties of the boundary layer follow simply and directly.The results reveal the profound influence of r, especially at small x. As boundary layer atmospheric resistance increases with x, r becomes relatively less important. It can be regarded as primarily reducing advective effects. Antievaporation films thus work best on small water surfaces in arid surroundings, but are less effective the larger the water body and the moister the surrounds. If leaf temperatures are not limiting, increasing r has greatest effect for small vegetated areas in an arid environment, but may not be optimal for extensive continuous monocultures. Control of surface resistance offers means of manipulating microclimate, for example when arid landscapes are watered for this purpose. The exploratory nature of this investigation, and its many limitations, are stressed. 相似文献
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《Agricultural Water Management》2004,67(3):221-233
Atmospheric CO2 enrichment may bring different effects on plant growth and evapotranspiration if plants are under N and water deficient conditions. In this study, spring wheat (Triticum aestivum L.) was grown in pots at two atmospheric CO2 concentrations (ambient and elevated), two levels of soil moisture (well-watered and droughted to 45–60% of field capacity) and five nitrogen (N) fertilization treatments (0, 112.5, 225.0, 337.5, 450.0 kg hm−2) in growth chambers. Leaf growth, leaf area, and tiller increment were largely a function of N application and water supply. Elevated CO2 increased 23–45% in leaf area only with the N-added treatments 55 days after sowing. Elevated CO2 also reduced stomatal conductance more in droughted treatments (−51%) than in well-watered treatments (−41%), and more with zero N application (−60%) than with the adequate N (−35 to 44%). Evapotranspiration (ET) was also reduced by CO2 enrichment in a similar way. Our results showed that the CO2-enrichment-induced decrease in transpiration almost compensated for the increase in ET brought by the higher leaf area under adequate N and water supply, such that ET was similar for control and CO2-enriched plants. Under reduced N and water supply, CO2 enrichment had limited effect on either leaf growth or ET. 相似文献
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Root growth, water potential, and yield of irrigated rice 总被引：3，自引：0，他引：3
Root length density (Lv), leaf water potential (Ψ leaf) and yield of rice were studied in 1983 and 1984 on a Phool bagh clay loam (Typic Haplaquoll) and on a Beni silty clay
loam (Aquic Hapludoll) in the Tarai region of Uttar Pradesh under naturally fluctuating shallow (0.07–0.92 m) and medium-depth
(0.13–1.26 m) water table conditions with six water regimes ranging from continuous submergence under 0.05 m ± 0.02 m (Ic)
to completely rainfed (Io). In irrigation treatments, Ic1, Ic3, Ic5, and Ic7, 0.07 m irrigation was applied on days 1, 3,
5, and 7 respectively, after the disappearance of ponded water. Maximum rooting depth (0.55 m in the shallow and 0.65 m in
the medium-depth water table) was attained at the dough stage (125 days after transplanting) and was more strongly influenced
by fluctuations in water table depth than by the water regime. For wet regimes (Ic1–Ic5), roots were concentrated at and above
the water table interface and had greater horizontal development, whereas in dry regimes, (Ic7 and Io) they were concentrated
in lower horizons and had a more vertical distribution. Like Lv, Ψ leaf was not significantly affected by water regime up to 90–95 days after rice transplanting but was significantly affected
thereafter, except for Lv beneath 0.2 m–0.25 m. Grain yields with irrigation treatments Ic1 and Ic3 under shallow and Ic1
under medium-depth water table conditions were not significantly different from those under continuous submergence, but there
was a (nonsignificant) trend to lower yield with less water. However, differences among the wet regimes (Ic, Ic1, and Ic3)
were small (141–490 kg ha–1) under shallow and 413–727 kg ha–1 under medium-depth water table conditions. The results demonstrate that optimum yield (5500–6000 kg ha–1) could be obtained under Tarai conditions by adopting an intermittent irrigation schedule of 3–5 days after the disappearance
of ponded water under shallow, and of 1–3 days under medium-depth water table conditions, in place of continuous submergence.
Received: 26 February 1996 相似文献
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Weighing lysimeters are the standard method for directly measuring evapotranspiration (ET). This paper discusses the construction,
installation, and performance of two (1.52 m × 1.52 m × 2.13-m deep) repacked weighing lysimeters for measuring ET of corn
and soybean in West Central Nebraska. The cost of constructing and installing each lysimeter was approximately US $12,500,
which could vary depending on the availability and cost of equipment and labor. The resolution of the lysimeters was 0.0001 mV V−1, which was limited by the data processing and storage resolution of the datalogger. This resolution was equivalent to 0.064
and 0.078 mm of ET for the north and south lysimeters, respectively. Since the percent measurement error decreases with the
magnitude of the ET measured, this resolution is adequate for measuring ET for daily and longer periods, but not for shorter
time steps. This resolution would result in measurement errors of less than 5% for measuring ET values of ≥3 mm, but the percent
error rapidly increases for lower ET values. The resolution of the lysimeters could potentially be improved by choosing a
datalogger that could process and store data with a higher resolution than the one used in this study.
相似文献
| José O. Payero (Corresponding author)Email: |
| Suat IrmakEmail: |
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Summary Four melon (Cucumis melo L.) cultivars were tested for salt tolerance at germination, seedling growth stages, and plant maturation. Noy Amid was the most tolerant during germination, achieving 56% germination in 15,000 mg/l NaCl solution. However, this cultivar and Eshkolit Ha 'Amaqim were relatively sensitive during the first 4 days' growth of the radicle and the hypocotyl, and the first 3 weeks' development of the seedling. Their yields were reduced under saline as compared with non-saline field conditions. In contrast, Honey Dew and Rochet had little or no germination in 15,000 mg/l NaCl but showed salt tolerance during seedling growth stages. Yield of Honey Dew was unaffected by saline field conditions, and that of Rochet was not significantly reduced from the non-saline control. Thus, selection for salt tolerance in melons appears feasible during early vegetative growth stages but not during germination.Contribution No. 1032-E, 1984 series, from the Agricultural Research Organization, Bet Dagan, Israel 相似文献
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国外“三化”发展的理论、实践及启示 总被引：2，自引：0，他引：2
该文采用文献法研究了国外与"工业化、城镇化、农业现代化"问题有关的马克思主义的城乡融合理论、发展经济学的二元结构理论、区域经济学的空间统筹理论以及其他城乡关系和"三化"发展理论,分析了国外城市化的"两种偏向"和城乡关系"两个趋向"的发展演变进程,总结了英、美、以、韩的新村建设,挪威推进城乡协调发展,荷兰支持农业生产链,加拿大农村协作伙伴计划和日本综合开发计划等推动农村和农业现代化的经验和做法。其启示是,选择最有说服力的分析框架,进行正确的理论预设,抓住实现利益整合与平衡的主线,选择合适的"三化"同步发展模式与路径以及机制与政策措施。 相似文献