共查询到18条相似文献,搜索用时 78 毫秒
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农业生产中的引种、扩种以及先进经验的推广等,都应根据农业气候相似来进行。只有满足了农业气候相似的条件,作物才能正常生长,并获得稳定的产量,达到引种、扩种的目的。 本文采用模糊相似优选比的方法,以柑桔的生长条件为例,进行农业气候相似分析。具体做法如下: 相似文献
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彭州市山区引种蔬菜的农业气候分析 总被引:2,自引:0,他引:2
运用农业气候相似的原理,对彭州市平坝种植的蔬菜向山区引种进行了农业气候分析,其结果对开发山区农业气候资源的二线蔬菜基地的建设具有重要意义。 相似文献
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广西引种澳洲坚果的气候适应性分析 总被引:5,自引:0,他引:5
根据澳洲坚果的生物学特性及引种试种结果,从广西的气候条件出发,采用模糊相似优选比的方法,对广西引种澳洲坚果进行农业气候相似分析,得出广西引种澳洲坚果的气候并提出适宜种植区建议。 相似文献
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广西引种澳洲坚果的气候适应性分析 总被引:1,自引:0,他引:1
根据澳洲坚果的生物学特性及引种试种结果, 从广西的气候条件出发, 采用模糊相似优选比的方法, 对广西引种澳洲坚果进行农业气候相似分析, 得出广西引种澳洲坚果的气候依据并提出适宜种植区建议。 相似文献
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本文根据农业气候相似原理,运用dBASE—Ⅲ数据系统及BASIC程序,计算出国内、外各地与我省大部分地区的农业气候相似距值。进而分析出国内、外花生主产区与我省大部分地区花生引种的适宜区与次适宜区。同时,对花生进行了品种特性诊断,为我省花生品种的选培提供一定的科学依据。 相似文献
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农业气候相似分析在观叶植物引种中的应用 总被引:4,自引:0,他引:4
采用计算欧氏距离的方法,分析观叶植物从广州引种到成都的农业气候相似性,统计气温,相对湿度,农业气候指标及不同管理条件下的两地欧氏距离,得出:在成都保护地生长有较好的气候适应证,引种易于成功。从理论上对观叶植物的引种提供了科学依据。 相似文献
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本文阐述了山东省作物引种气候诊断技术方法的基本思路、依据原理、计算方法,并全面概括总结了引种气候诊断综合服务系统的进程图,使读者初步了解这一研究工作的内容,方法和最终目的,与此同时结合山东的气候特点初步进行了引种小区的划分及一、二级农业气候相似区域的标定。 相似文献
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在建立大型农业气候数据库的基础上,研制了“农业气候相似信息系统”,着重介绍该系统的总体设计,原理与功能特点,开发与应用前景等。该系统可迅速查询农业气候相似研究应用动态和世界各地的气候数据;任选指标组合进行农业气候相似计算、排序、可为动、植物引种、扩种提供驯化次序和适宜范围,也可为农业技术交流和研究提供农业气候依据。 相似文献
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超大穗小麦在山东引种的气候适应性 总被引:2,自引:0,他引:2
利用山东省和陕西省中部45个气象台站建站至1990年的气象资料,采用欧氏距离的计算方法,并按照各气候要素不同的权重系数进行修正,求出综合相似距。 相似文献
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Miroslav Trnka Josef Eitzinger Daniela Semer��dov�� Petr Hlavinka Jan Balek Martin Dubrovsky Gerhard Kubu Petr ?t��p��nek Sabina Thaler Martin Mo?ny Zden��k ?alud 《Climatic change》2011,108(1-2):261-289
During the past few decades, the basic assumption of agroclimatic zoning, i.e., that agroclimatic conditions remain relatively stable, has been shattered by ongoing climate change. The first aim of this study was to develop a tool that would allow for effective analysis of various agroclimatic indicators and their dynamics under climate change conditions for a particular region. The results of this effort were summarized in the AgriClim software package, which provides users with a wide range of parameters essential for the evaluation of climate-related stress factors in agricultural crop production. The software was then tested over an area of 114,000 km2 in Central Europe. We have found that by 2020, the combination of increased air temperature and changes in the amount and distribution of precipitation will lead to a prolonged growing season and significant shifts in the agroclimatic zones in Central Europe; in particular, the areas that are currently most productive will be reduced and replaced by warmer but drier conditions in the same time the higher elevations will most likely experience improvement in their agroclimatic conditions. This positive effect might be short-lived, as by 2050, even these areas might experience much drier conditions than observed currently. Both the rate and the scale of the shift are amazing as by 2020 (assuming upper range of the climate change projections) only 20?C38% of agriculture land in the evaluated region will remain in the same agroclimatic and by 2050 it might be less than 2%. On the other hand farmers will be able to take advantage of an earlier start to the growing season, at least in the lowland areas, as the proportion of days suitable for sowing increases. As all of these changes might occur within less than four decades, these issues could pose serious adaptation challenges for farmers and governmental policies. The presented results also suggest that the rate of change might be so rapid that the concept of static agroclimatic zoning itself might lose relevance due to perpetual change. 相似文献
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气候变化对我国农作物宜播种面积的影响 总被引:3,自引:0,他引:3
基于气候条件与农作物熟制的相互关系,得到农作物潜在播种面积,分析气候变化对我国农作物播种面积的影响和其他因子对其综合作用。结果表明:我国实际播种面积增长缓慢,空间差异明显,华中实际播种面积占比最大而新疆最少,西南、华中、东北和新疆面积增加,西北、华南、华东和华北减少;在≥10℃积温指标下,1986-2009年我国潜在的不可耕地面积平均值相对1961-1985年减少约34.33%,一年一熟区面积有所减少,但仍占约50%面积,一年两熟和一年三熟地区面积均呈增加趋势;综合≥10℃和≥0℃两个积温指标,我国潜在播种面积缓慢增长,与实际播种面积的变化趋势一致,其他综合因子则在总体上对潜在播种面积的增长有微弱抑制作用。 相似文献
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E. K. Zoidze T. V. Khomyakova Z. A. Shostak V. G. Sirotenko L. I. Ovcharenko V. A. Sukhareva 《Russian Meteorology and Hydrology》2010,35(8):554-563
Problems of adapting available methods, forms, and approaches to agroclimatic support of the economy under climate change
conditions are under consideration. Development and operation of an automated reference-information system (ARIS) of agricultural
resources, assessment of the environmental bioclimatic potential, and preparation of agroclimatic Atlases (with a reference
to hazardous agroclimatic events) are dealt with. The process of adaptation includes development of such system of agroclimatic
support of the economy, which would adequately reflect the actual state of agroclimatic resources, bioclimatic potential of
the environment, hazardous agroclimatic events, etc., at any prescribed moment, at any point. The problem is supposed to be
solved with a mechanism of agricultural monitoring as one of the methods of agroclimatic support of the economy. 相似文献