共查询到20条相似文献,搜索用时 156 毫秒
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近年来,我国农业光伏电站建设经历了飞速发展.2022年1月6日,国家能源局、农业农村部和国家乡村振兴局三部门联合下发了《加快农村能源转型发展助力乡村振兴的实施意见》,再度布局"光伏+现代农业".2022年1月24日,国务院下发的《国务院关于印发"十四五"节能减排综合工作方案的通知》中强调,要加快太阳能等可再生能源在农业生产中的应用.2022年2月22日中央一号文件发布,文件指出要有序推进农村光伏新能源建设.从一揽子鼓励光伏农业发展的利好政策中可以得出,光伏农业的应用前景广阔且市场潜力巨大. 相似文献
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近月来日本地震灾难引起的核危机蔓延全球。人心惶惶。不少人开始眼新的可再生能源,以维系全球的可持续发展。风能,水能、太阳能等天然资源都曾引起社会的广泛讨论,不过有一种草药,经提炼后能制成生物柴油。或可为全球开拓新的能源探讨领域。 相似文献
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农村能源建设是发展循环经济、促进资源循环式利用、推动产业循环式组合、构建和谐生态家园、节约型社会和社会主义新农村的必然选择,是解决"三农"问题、发展农村经济的突破口.我国农业人口多,自然条件千差万别,经济基础薄弱,农村能源主要是以生物质和煤炭为主,沼气、太阳能、水能、风能等优质清洁能源比例很小.发展农村能源是一项符合农村实际,既可为农民提供优质清洁能源,又可以通过生态链的延长增加农民收入,是农民真正受益的民心工程、惠民工程. 相似文献
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我国设施园艺作物生长模型研究进展 总被引:1,自引:0,他引:1
作物生长模型是温室生产智能化操作与管理软件的核心部分,对温室设施中作物生长环境参数的调控和发挥设施农业优质高效的生产功能具有重要作用.对目前国内设施园艺作物生长模型和专家系统的研究现状、生产应用进行了综述,认为近年来国内在温室栽培的黄瓜、番茄、甜瓜等作物的生长模型和应用上建立了一系列综合、完整的体系,在建模技术及算法上均有创新.但在模型的适应性、准确性、可靠性等方面还比较薄弱,有待进一步加强,从而促进我国设施园艺作物生长模型的进一步研究和提高实用化程度. 相似文献
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In light of climate change and the increasingly limited availability of energy resources, any form of renewable raw materials that can be used for energy production should be accounted for. One of the most promising renewable sources is considered to be that of lignocellulosic feedstock. In urban forestry and greening, millions of tons of lignocellulosic waste is produced every year but that biomass mostly goes unused. The aim of this research project was to investigate the utilisation potential of this very form of waste biomass using a medium-sized town as a sample for the work (Tartu in Estonia, with a population circa 100,000). Woody and non-woody vegetation representing greening waste from different seasons was investigated: spring and autumn leaves, and mixed waste from urban greening which contained grass, twigs, and leaves. BMP assays were conducted to estimate the biogas production potential and the three step bio-ethanol production process was used to estimate the bio-ethanol production potential. In the bio-ethanol production process, an N2 explosion pre-treatment was used, followed by enzymatic hydrolysis and fermentation. Map analysis was used to assess the area that was manageable by urban forestry and greening in the city of Tartu in order to estimate the amount of greening and forestry waste that was available for bioconversion and the volumes of biofuel that could be produced. 相似文献
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In long term studies the following climatological characteristics were measured or calculated: air and soil temperature, sunshine, wind speed, vapor pressure, saturation deficit, precipitation, humidity, incoming and reflected solar energy, energy emitted by active surfaces and primary production. Taking into account the relationships between climatological characteristics, the growth stages of vegetation, and relations between heat balance components, the fluxes of energy used for evapotranspiration, air, and soil heating were estimated in various ecosystems composing the agricultural landscape. The energy contained in biomass production of various crops was estimated also. Aggregate estimates of energy flow connected with evapotranspiration, and soil and air heating were calculated for eight model landscapes which differed by the plant cover structure. A higher variability of energy fluxes was observed for individual ecosystems than for agricultural land-scapes. It was shown that the structure of the plant cover has an important bearing on energy flow and water cycling both by direct and indirect influences. Shelterbelts are especially important in their influence on energy flow and water cycling.Studies carried out within the project CPBP.04.10.03. 相似文献
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沼渣和沼液对油菜生长及氮素利用率的影响 总被引:4,自引:1,他引:3
设空白(CK)、无机肥(CF)、沼液(BS)、沼渣(BR)、沼渣+沼液配施(BR+BS)5个处理,除空白不施肥外,其余处理均等氮量投入.利用温室盆栽研究了施用沼渣、沼液对油菜产量、品质及氮素利用率的影响.结果表明:在油菜产量上,施用沼液与无机肥效果相当,分别达到13.4、13.7 g/盆,两者差异不显著,并且与沼渣+沼液处理差异也不显著,但均显著高于沼渣处理.在品质方面,沼渣、沼渣+沼液配施、沼液以及无机肥处理的硝酸盐含量分别为261.8、287.4、464.3、1 003.0 mg/kg,其中沼渣、沼渣+沼液配施以及沼液3种处理均显著低于无机肥处理;在油菜Vc含量上,沼渣以及沼渣+沼液配施处理的为Vc含量分别为5.3 mg/100g油菜、5.19 mg/100g油菜,两者均显著高于无机肥和沼液处理.各处理间,以沼液和无机肥的氮素利用率最高,分别为49.6%、51.8%,两者差异不显著,但均显著高于沼渣处理,沼渣+沼液配施处理则介于之间. 相似文献