variety population 中文意思是什麼

variety population 解釋
品種群體
  • variety : n 1 變化，多樣化 （opp monotony uniformity）。2 （各種東西的）雜湊。3 異種；種類；項目；【生物學...
  • population : n. 1. 人口；人口總數；全體居民；人口的聚居。2. 物的全體[總數]；【生物學】蟲口；種群（量）；群體；族，組，個數；【統計學】對象總體，全域。3. 【物理學】布居；密度。4. 〈罕用語〉殖民。
  1. The early rice experiment was in split - split plot design with 3 3 2 for variety fertilizer plant population

    早稻試驗採用裂區-裂區設計3 3 2布置品種肥料密度。
  2. Gene pool the total number and variety of genes existing within a breeding population or species at a given point in time

    基因庫：是繁殖種群或種類在某一給定的時間所有基因的數量或種類。
  3. The necessary population inversion can be achieved in a variety of ways.

    我們可以用各種方法來實現這種必要的粒子數反轉。
  4. The knowledge model for pre - sowing plan design includes submodels of target yield calculation, variety selection, sowing or transplanting date, population density and sowing rate, fertilization and water management strategy

    其中，播前方案設計知識模型包括產量目標、品種選擇、播栽日期、種植密度與播種量、肥料和水分運籌等。
  5. The sub - model for design of population density was developed according to the principle of determining boll number from target yield, fruit node from boll number, fruit branch from fruit node and population density from fruit branch by integrating the effects of sowing date, cutout date, effective temperature accumulation above 12, variety type, and fertilizer and water management levels. sowing rate was then decided by integrating the effects of different soil water and salt contents, ph, temperature and sowing style on seedling emergence rate with relative weight method

    基於「以產定鈴、以鈴定節、以節定枝、以枝定苗」的原理，同時考慮播種日期、打頂日期、 12的有效積溫、品種株型特性、肥水管理水平差異等因素來確定適宜的種植密度；在此基礎上，應用相對權重法計算土壤含水量、含鹽量以及整地質量和播種方式等多個生態環境因子對出苗率的綜合影響，進而確定播種量。
  6. The minority population is composed of the young people who are high intelligence. most of them live separately and temporary and come from different regions. the relationship between ethnic groups has rive characters : complex and sensitively, relating to many aspects, variety, affecting to each other, demonstrating

    人口的特點主要是年紀輕、文化程度高、散居為主未形成聚居點、增長速度極快、暫住人口比例高、來源地廣泛;民族關系則具有復雜敏感性、涉及面廣泛性、表現形式多樣性、效應上的互動性和功能上的示範性五大特點。
  7. The most important factors affected crop yield and economics in these experiments were : rape : population density ; early rice : interaction of p k ; late rice : rate of nitrogen application ; wheat : variety ; midrice. interaction of n k

    這些試驗中影響作物產量最重要的因素是：油菜：種植密度；早稻：磷鉀交互作用；晚稻：氮肥施用量；小麥：品種；中稻：氮鉀交互作用。
  8. History and characteristics of macau population variety in ming and qing dynasties

    明清澳門人口變化的歷史狀況與特點
  9. The optimum fertilization rate, population density and variety in these experiments have recommended to farmers

    已將試驗所得最佳施肥量、種植密度和品種推薦給農民。
  10. Then, two methods are applied to keep the diversified variety of colony : reserve two special units in new population and increase the mutation factor

    針對遺傳演算法的群體多樣性過低的缺點。提出了兩種改進方法，使得群體始終充滿多樣性。
  11. A modified genetic algorithm is proposed. in the dissertation a different fitness function is constructed and similarity is introduced, which can increase variety of population md avoid prematurity

    這樣可以增加群體多樣性，在一定程度上避免早熟現象發生；然後利用改進遺傳演算法對圖像進行了分割計算，將目標與背景分割開來。
  12. Microsatellite dna is among the most efficient class of molecular markers due to their hyper - variable and co - dominant nature with relatively high abundance and random distribution in the genome, and have been applied to a variety of fields including population differentiation, kinship analysis, linkage analysis, and evolutional and ecological studies

    摘要微衛星dna由於具有高度多態性、共顯性遺傳、基因組中含量豐富且隨機分佈等特點，目前已成為最有效的分子標記之一，並應用於種群分化研究、血緣分析、基因連鎖分析、進化以及生態學研究等許多領域。
  13. Data from two experimental sites demonstrate that the big difference in yields can be obtained by using different combinations of variety, fertilizer and plant population

    兩個試驗點的數據顯示，採用不同的品種、肥料和密度組合能得到巨大產量差異。
  14. It is necessary for a species " adaptation and evolutionary potential to keep genetic variety at a relative level. genetic diversity in the population must not be lost furthermore and gene exchange among individuals should be enhanced as much as possible to avoid extinction of crested ibis

    一定程度的遺傳變異性是維持種群的適應力與進化潛力的必要條件，為使朱?免於滅絕的厄運，必須避免其種群遺傳多樣性的進一步喪失，並盡可能增加個體間的基因交流，最大限度地避免近親繁殖。
  15. In the tuli block, there is the mashatu nature reserve with a small population of elephants leopard, lion, giraffe and a variety of bird species

    圖利風景區內的馬沙圖自然保護區有為數不多的大象、美洲豹、獅子、長頸鹿和一些鳥類。
  16. Field experiments were conducted at shaoxing and fuyang, zhejiang province, using split - split plot design on early rice and split plot design on late rice respectively, to identify the roles of variety, fertilizer and plant population in achieving higher yield

    早稻採用裂區-裂區試驗設計和晚稻採用裂區試驗設計的大田試驗在浙江省紹興和富陽進行，以檢驗品種、肥料和植株密度在取得高產中的作用。
  17. In the past few years, montgomery county has become more ethnically diverse, with increases in the absolute number of the minority population and also in the variety of cultures and languages ; hence, more linguistically and culturally appropriate services are needed for the county s changing population

    過去幾年，蒙哥馬利郡的種族差異性漸增弱勢族裔人口正逐漸成長且文化及語言更趨多變性，因此該郡的族群變化需要更符合語言及文化的服務。
  18. Moreover we have made reference to a number of studies on a variety of development issues such as population migration, environmental issues resulting from changes in the dyke - pond system, and urbanization in the delta and in

    而且，我們還參閱了對發展問題的多項研究，包括移民問題、基塘農業生態系統的演變所引起的環境問題、以及整個珠江三角洲地區和廣東省的城市化問題。
  19. The system for compiling population estimates is complex and requires data from a wide variety of sources

    編制人口數據的方法相當繁復，所需的資料來源亦很廣泛。
  20. Primary research on self - organization model of population variety in urban areas

    城市人口區域分佈動態演化自組織模型初步研究
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