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cropping characteristics
相关语句
  种植特点
     According to the ecological environments, social and economic backgrounds and rice cropping characteristics in different areas of China, the Chinese rice planting area is divided into 6 rice cropping regions(the first-grade regions) and 16 subregions (the second-grade regions).
     根据各地生态环境、社会经济条件和水稻种植特点,将中国稻区划分为6个稻作区(一级区)和16个稻作亚区(二级区)。
短句来源
  “cropping characteristics”译为未确定词的双语例句
     They can be divided into four areas on the basis of their cropping characteristics.
     根据其出露特征可分为四个区。
短句来源
     Satellite remote sensing is the most effective means to identify land cover pattern and change on a regional scale, so it should be an important way to discriminate multiple cropping characteristics on a large scale.
     卫星遥感是探测大尺度土地覆被格局及变化最有效手段,因此可以作为获取区域和全国尺度作物复种指数的一个重要途径。
短句来源
  相似匹配句对
     And the characteristics of the G.
     通过仿真和实验,也验证了G.
短句来源
     The characteristics of G.
     论文首先对语音编码的各种方案进行了比较,并对G.
短句来源
     Agrochemical Characteristics of Soil for Continuous Cropping Lily
     百合连作土壤养分及物理性状分析
短句来源
     Effect of Continuous Cropping on Peanut Seedling Physiological Characteristics and Pod Yield
     连作对花生幼苗生理特性及荚果产量的影响
短句来源
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  cropping characteristics
The VLICrop defines the cropping characteristics, if used, for the rendering process.
      


According to the ecological environments, social and economic backgrounds and rice cropping characteristics in different areas of China, the Chinese rice planting area is divided into 6 rice cropping regions(the first-grade regions) and 16 subregions (the second-grade regions). Their general information, natural and ecological environments, paddy field cropping systems, types of rice varieties and their distribution and major diseases and insect pests are respectively described. Orientations,...

According to the ecological environments, social and economic backgrounds and rice cropping characteristics in different areas of China, the Chinese rice planting area is divided into 6 rice cropping regions(the first-grade regions) and 16 subregions (the second-grade regions). Their general information, natural and ecological environments, paddy field cropping systems, types of rice varieties and their distribution and major diseases and insect pests are respectively described. Orientations, approaches and measures for developing rice production are raised and meanwhile the suggestions are put forward on the layout of production, paddy field crops combination and selection and construction of commercial rice production bases.

根据各地生态环境、社会经济条件和水稻种植特点,将中国稻区划分为6个稻作区(一级区)和16个稻作亚区(二级区)。对各个稻作区和亚区的基本情况、自然生态条件、稻田种植制度、品种类型、主要病虫害等作了评述,並提出水稻生产发展方向、途径和措施。

The rocks that crop out from the geothermal field in Yangying village mainly consist of volcanic lavarocks and pyroclastic rocks on the earth surface, and there are a great deal of biotite granite porphyry under the earth surface. The formation of the geothermal field is comparatively close related to igneous. The types of the geothermal feature on the earth surface are various, including hot spring, boiling spring, boiling-spouting spring, fUmarole,fumarolic, and sinter. They can be divided into four areas...

The rocks that crop out from the geothermal field in Yangying village mainly consist of volcanic lavarocks and pyroclastic rocks on the earth surface, and there are a great deal of biotite granite porphyry under the earth surface. The formation of the geothermal field is comparatively close related to igneous. The types of the geothermal feature on the earth surface are various, including hot spring, boiling spring, boiling-spouting spring, fUmarole,fumarolic, and sinter. They can be divided into four areas on the basis of their cropping characteristics. The isotope age of the hydrothermal events determined by the Uranium-series methods is 14. 6 Ma or so. Combined with the stratigraphic correlation, the time of the hydrothermal activity is considered to be Late Miocene-Pleistocene epoch. The major big rift and two groups of the minor rifts approximately pointing to S-N in the area are the main pathway and the main tectonic crack of heat controller for the hydrothermal activity.It is considered preliminarily that the geothermal field should be connected with activities of magma. At present, the geothermal field is in such a steady state that the thermal spreading ratio is equal to the thermal producing ratio, or a little more. Now the temperature of the geothermal field has been verified to be 207℃ at most.

羊应乡地热田内出露的有关岩石,在地表以火山熔岩和火山碎屑岩为主,地表以下则有大量黑云母花岗斑岩分布。热田的形成与火成岩有较密切的关系,地表热显示的类型多种多样,有热泉、沸泉、沸喷泉、喷气孔、冒气地面和泉华等。根据其出露特征可分为四个区。经铀系法测定其水热活动的同位素年龄为14.6Ma左右,结合地层对比,认为水热活动时间为中更新世晚期。区内近S—N向的主要大断裂和两组次一级的断裂是水热活动的主要通道和主要控热构造裂隙。初步认为热田应属与岩浆活动有关的地热田、目前热田处于产热与散热大致平衡或散热略大于产热的基本平衡状态,探明的热水温度已高达207℃。

Multiple cropping system (double- and triple-crop in one year) is an important agricultural system in China, which is significant to increase grain yield and promote agricultural economic development. Multiple Cropping Index (ratio of sown area and cropland area) is fluctuating year by year due to the changing natural conditions and rural social status, so, getting the change information timely is undoubtedly very important to assess grain yield change and its reasons, as well as to make scientific...

Multiple cropping system (double- and triple-crop in one year) is an important agricultural system in China, which is significant to increase grain yield and promote agricultural economic development. Multiple Cropping Index (ratio of sown area and cropland area) is fluctuating year by year due to the changing natural conditions and rural social status, so, getting the change information timely is undoubtedly very important to assess grain yield change and its reasons, as well as to make scientific decision for agricultural development. China is a vast country with complex cropping system, however, the traditional statistic method cannot meet the government demands on cropping system variation. Satellite remote sensing is the most effective means to identify land cover pattern and change on a regional scale, so it should be an important way to discriminate multiple cropping characteristics on a large scale. In this study, the authors attempt to extract multiple cropping information from 8km 10-day composite AVHRR/NDVI time series images according to the phenological metrics and farmland practices (such as sowing and harvest) temporal features, so as to research the cropping system change in the past twenty years. Official agriculture statistics contain the information about sown areas and cropland areas of each county, which provide a useful data source for the validation of remotely sensing based crop rotation retrieval. Multiple cropping system spatial pattern was mapped using this method, then its availability and precision were discussed.

多熟种植是中国重要的种植制度,对保持和增加粮食产量和促进农村经济发展有重要意义。复种指数受自然条件和农村社会状况的影响处于不断变化之中,及时获取其变化信息对估计粮食产量变化及其原因和农业发展科学决策有非常重要的意义。中国地域辽阔,作物种植制度复杂多样,传统的统计方法不能及时满足政府获取种植制度变化的要求。卫星遥感是探测大尺度土地覆被格局及变化最有效手段,因此可以作为获取区域和全国尺度作物复种指数的一个重要途径。该研究探讨了应用多时相遥感数据定量表达全国种植制度信息提取的方法及可行性,采用峰值特征点检测法结合作物生长季相特征及农田管理特点(播种和收获)提取了中国农田的多熟种植信息,并与统计数据的复种指数进行比较验证,为进一步进行农业种植制度变化研究奠定了基础。

 
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