crop distribution 中文意思是什麼

crop distribution 解釋
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  • crop : n 1 農作物，莊稼；收獲；收成；〈the crops〉 一季的收獲量，產量。2 （同一時期出現的人物等）一批，...
  • distribution : n 1 分配，分發，配給；分配裝置[系統]；配給品；配給量；【經濟學】配給方法，配給過程；分紅；【法律...
  1. This technology will assist producers to assist producers to cope with climatic - limiting factors, such as : uneven distribution of rainfall, delayed accumulation of heat units and selection of crop rotation sequences, etc

    這一技術將幫助生產者妥善對付天氣限制因素，如：雨量分配不均，積溫拖延和作物輪作順序選擇等。
  2. A study on distribution law of microclimate factors in poplar - crop intercropping system

    楊糧間作系統小氣候水平分佈特徵研究
  3. In this research, geostatistics was adopted to analyse crop growth status, soil nutrient and yield, with emphasized on quantitative characterization of the spatial variation and investigating the relationship between crop growth indices and yield from spatial distribution

    本研究首次在作物長勢分析中引入地統計學手段，結合田區土壤養分和產量的空間變異特徵，著重定量描述了作物長勢空間變異規律，並從空間分佈的角度探尋作物長勢監測指標與產量的關系。
  4. ( 2 ) irrigating with less water, only when the quantity of irrigating water in a puddle is more than 4000m1, it can spread into 20cm depth where the crop roots are gathered. otherwise, it is hard for the crops to absorb the irrigating water, and the irrigating water is wasting. ( 3 ) the vertical distribution state of n. p. k. is that, n. moves with the irrigating water fast and most of n. gathers in the soil of 30 - 40cm depth ; the moving rules of p. and k. are similar

    （ 3 ） n 、 p 、 k元素在土壤中的垂直分佈狀況為： n素隨滴灌水在土壤中的流動性較強，在30 ? 40cm土層集聚量較大； p素和k素在土壤中運移規律基本相似，都以土表集聚為主，到30 ? 40cm土層， k ~ +含量就接近對照，這說明土表滴灌施鉀肥實際意義不大。
  5. The sensitive index obtained by least - squared method sometimes can not be scientifically explained in terms of crop physiology. the phenomenon is related to the statistical distribution of experiment data in addition to the number of experiment treatment and water deficit level

    受最小二乘法求優數學解的約束，在求解作物水分響應模型的敏感指標時常出現從作物生理和物理上難以科學解釋的情況，這除與試驗處理數量多少及缺水水平有關外，也與試驗數據的統計分佈有關。
  6. Adding fertilizers through the irrigation water ( i. e. fertigation ) is one of common ways of fertilization. however, the uneven distribution and leachings of nutrients and induced crop damage are the common problems for the traditional way of fertigation

    灌溉施肥是生產中經常採用的一種水肥調控技術，但施肥不勻，養分流失，容易引起作物灼燒等，是傳統的灌溉施肥方法常常遇到的問題。
  7. It fulfilled the transforming from point data to polygon data and created the field soil nutrient spatial distribution graphics using the different kinds of interpolation ways. it integrated soil test nutrition data, object yield obtained by historical crop yields of past years, fertilization model and expert knowledge to realize intelligent decision and make field fertilizer prescription. with the card ataflash, the prescription made by the system can be imported into the control computer of variable - rate fertilizer machinery and direct variable - rate controller to implement variable - rate fertilization

    系統實現了以下主要功能：應用不同的插值方法實現點狀信息向面狀信息的轉化，生成農田土壤養分空間分布圖；以土壤采樣測試分析數據作為土壤背景養分，並根據歷史產量及其他信息分析確定施肥所要達到的目標產量，通過集成施肥模型和專家知識實現智能決策，生成田間定位施肥處方；然後用ataflash卡導入到變量施肥機械控制計算機上，指導其田間變量作業。
  8. Biodiversity exists among am fungi and is influenced by numerous factors including soil properties and plant species. if am fungi are to be used in sustainable agricultural systems it is necessary to study native am fungi in the target areas and then select efficient isolates that can be applied as inocula in the field to improve crop growth. the objectives of this study were to investigate the germplasm of am fungi, to understand the distribution pattern of am fungi in different ecological conditions such as area, soil factor and host plant, to select isolates effective in nutrient acquisition by the host plant sweet potato, to test their effectiveness under field conditions, and to monitor amf after their introduction into the field

    本研究通過調查我國北方部分地區的am真菌資源，研究了am真菌的種群組成及其在空間、土壤利用方式和宿主植物類型等不同環境條件和空間尺度上的分佈規律；在此基礎上，根據它們對甘薯的生長、吸磷效應篩選出高效菌株，在大田條件下研究了am真菌菌絲的分佈特性、代謝活性及其對甘薯產量和品質的影響；並通過分子探針跟蹤調查了引入am真菌在共生體中的發育和表達，以期為菌根真菌的生產應用提供技術支持。
  9. Acceding to the theory of crop water requirement, maximum potential evapotranspirations are calculated by applying fao penman - monteith method, and then we obtain the water requirement, water balance and water correction factors ect. of main crops ( spring maize, summer maize, spring wheat, winter wheat, cotton ) and different type grasslands, and the space - time distribution regularities of water requirement of cropland and natural grassland are analysed, the result show : the water requirements of same kind crop in different areas are different, water satified degrees are different to different crops in the same area, and water requirement of same crop are different between years for climatic variation ; the water requirements of main crops are increasing from east to west and from south to north, water satified degrees are decreasing from east to west and from south to north. in growing season, there are deficits in crops water supply in most area, so the irrigation is needed to meet the requirement for crop growing normally

    根據作物需水的理論和方法，採用計算精度較高的faopenman - monteith方法（ 1998 ）計算了半乾旱區最大可能蒸散，並基於此計算五種主要旱地作物（春玉米、夏玉米、春小麥、冬小麥、棉花）和不同類型的天然草地的需水量、水分盈虧、水分訂正系數等，分析了農田和天然草地水分供需的時空分佈規律，結果表明：不同地區同一種作物的需水量是不同的，同一地區對不同作物的水分滿足程度是不同的，而且同一種作物在同一地區隨著氣候的變化需水量也會有一個年際變化；主要作物需水量由東向西，由南向北遞增，正常生長發育的水分保證程度由東向西，由南向北遞減。
  10. Paddy is the main crop in hangzhou, and its water use play an important role in water distribution of hangzhou city

    水稻是杭州市最主要的農作物，其用水量對整個杭州市水資源的配置起著舉足輕重的作用。
  11. By an analysis of the statistical data of 2003 from the national agricultural technology center and the data of peasant household survey in 2000, the conditions are depicted of the spatial distribution and product mix of the consumption of nitrogenous fertilizers in china and the crop demand

    通過對全國農技中心2003年統計數據和2000年農戶調查數據的分析，闡明了我國氮肥消費的空間分佈、品種結構和農作物需求狀況；並指出了農作物氮肥施用中存在傳統施肥習慣影響氮肥消費結構，氮肥施用面積不足、適量和超量各佔三分之一，施肥方式影響肥料利用率，氮肥價格的上漲也影響氮肥消費結構等問題。
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