yield per net 中文意思是什麼

yield per net 解釋
網次產量
  • yield : vt 1 生出，產生（作物、報酬、利益等）。2 給與，讓與；讓渡；放棄（權利、地位等）；交出。3 承認。4 ...
  • per :
  • net : n 因特網。 supply Net services 提供因特網服務。 n 1 網，網眼織物，（花邊的）織物。2 網狀物，網狀...
  1. Firstly, this dissertation estimated the size of carbon source ; sink and net carbon sink of farmland ecosystems in china costal regions ( including ten provinces ) with statistic data from 1981 to 2001, which include data of crop yield and agricultural consumptions. then analyzed the temporal - spatial differences of carbon source, sink and net carbon sink of china costal farmland ecosystems. secondly, estimated npp ( net primary productivity ) of farmland ecosystems in china costal regions with per month noaa - avhrr ndvi ( normalized difference vegetation index ) data and estimation model

    本文首先運用1981 - 2001年的統計資料（作物產量和各種途徑的農業投入數據） ，對沿海十省區農田生態系統碳源匯及凈碳匯進行了估算，並分析了其時空差異；然後運用1998年逐月ndvi數據通過建模對沿海地區農田生態系統npp進行了估算，並分析了npp分佈與農田生態系統碳吸收的相關性；最後通過對農田生態系統碳源匯的影響因素分析，提出了不同的農田生態系統碳增匯減排技術。
  2. Come assets to create profits and assets of the business operations to create the cash acquisition of these two indicators improved, earnings per share and net assets yield rate has been upgraded and the secondary market price effects of mergers and acquisitions were not unified conclusion

    得出單位資產創造的營業利潤和單位資產通過經營活動創造的現金這兩個指標通過並購得到改善，每股收益和凈資產收益率也有所提高，而被並購公司的二級市場股價效應並不統一的結論。
  3. The experimental results showed that there was a significant difference between root yield and sugar yield under different planting patterns, the root yield and sugar yield were increased by 36. 7 % and 39. 8 % respectively, and the net profit was increased by 1602 yuan per ha for two lines within wide row with paper - pot in comparison with the treat of direct sowing in normal row

    摘要試驗結果表明，在同等條件下，由於栽培方式不同，密度不同，塊根產量、產糖量差異較大，以紙筒大壟雙行為最好，甜菜塊根產量、產糖量比對照小壟直播分別提高36 . 7 % 、 39 . 8 % ，每公項純增效益1602元。
  4. They are agricultural productive materials price growth rate, sown area of grain crops growth rate, grain yield per area growth rate -, natural disaster covered grain areas growth rate, net grain import change rate, grain reserve change rate, population growth rate, per income growth rate, city and town population growth rate, food industry production value growth rate, year - end pig number growth rate, medical & pharmaceutical and textile industry production value growth rate, grain marketization degree, inflation rate using the previous year as base year ( preceding year = 100 ), public grain purchases price growth rate, investment in agricultural science and technology growth rate, investment in agricultural infrastructure growth rate, growth rate of graduates number from agriculture, forestry, science & technology universities and colleges and specialized secondary schools, government expenditure for agriculture and agricultural credit growth rate, international grain price growth rate, rmb exchange rate growth rate, last grain price growth rate, economic crop price growth rate, meanwhile, a new method is attempted to be used in this paper and the grain price early - warning problem is transformed into machine learning problem by introducing statistic learning theory and svm method which are gaining popularity in machine learning field at present in the world

    在此基礎上，篩選出23個警兆指標：農用生產資料價格增長率、糧食播種面積增長率、糧食單產增長率、糧食受災面積增長率、糧食凈進口量變化率、糧食儲備變動率、人口增長率、人均收入增長率、城鎮人口增長率、食品工業產值增長率、豬年末頭數增長率、醫藥紡織工業產值增長率、糧食市場化程度、以上年為基年的通貨膨脹率、國家糧食定購價格增長率、農業科技投入增長率、農業基礎設施投入增長率、農、林、科技高校大、中專畢業生人數增長率、財政支農資金比重及農業信貸增長率、國際糧食市場價格增長率、人民幣匯率增長率、上期糧食價格增長率、經濟作物價格增長率。同時論文在預警方法上作了新的嘗試，把糧食價格預警問題轉換成一個機器學習問題，引進當前國際上機器學習領域中比較熱門的統計學習理論和支持向量機方法，用順序回歸演算法對歷史數據進行學習建立了糧食價格預警模型。
  5. The yield per unit of the second pattern obviously declined, which was 487. 4 kg / 667m2, but the total value was greatly improved, the mean was 6965. 0 yuan, and the net income was 5321. 5 yuan. for this pattern one - season late rice was mainly planted

    一糧一經的糧食單產顯著下降，每667米2產量37例平均為487 . 4kg ，但總產值極顯著提高，平均為6965 . 0元，凈收入5321 . 5元;這種模式以種植一季晚稻為主。
  6. ( 4 ) the yield per unit area of main agricultural products and the net income per capita annual of rural households increased very slowly. ( 5 ) the advance of adjusting structure of agricultural industry was very slow. ( 5 ) the suggestion on solving those problems are as follows : ( 1 ) seizing the opportunity that the central government carries out the policy developing the western china and fasten the development of the western china to strengthen the basis of tax income

    4 、西部地區財政支農投入中存在的問題導致了「三憂」 、 「三慢」等嚴重後果，即：西部地區農業水利基礎設施狀況堪憂，農業科技水平堪憂，生態環境狀況堪憂；西部地區農業結構調整步伐緩慢，農業產出水平提高緩慢，農民收入增長緩慢。
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