sown area 中文意思是什麼

sown area 解釋
播種面積
  • sown : sow1 的過去分詞。
  • area : n. 1. 面積；平地；地面。2. 空地；〈英國〉地下室前的空地。3. 地區，地方；〈比喻〉區域；范圍。
  1. Refers to area of land sown or transplanted with crops regardless of being in cultivated area or non - cultivated area. area of land re - sown to natural disaster is also included

    指實際播種或移植有農作物的面積。凡是實際種植有農作物的面積，不論種植在耕地上還是種植在非耕地上，均包括在農作物播種面積中。在播種季節基本結束后，因遭災而重新改種和補種的農作物面積，也包括在內。
  2. Factor analysis model is constructed to analyze variables influencing yield and sown area in grain production

    摘要在建立因子分析模型基礎上，本文對中國糧食單產和播種面積的影響因子進行了實證分析。
  3. A factor analysis model is constructed to analyze variables influencing yield and sown area in grain production

    摘要在建立因子分析模型基礎上，本文對中國糧食單產和播種面積的影響因子進行了實證分析。
  4. In terms of area sown under grain, resource availability and technology play a leading role, followed by comparative benefits and policy

    對中國糧食播種面積影響最大的因子是資源及科技因子，其次是比較效益及政策因子。
  5. We must protect primary farmland, keep the area sown to grain stable, improve the structure of grain varieties grown and increase the per unit area yield of grain

    要保護好基本農田，穩定糧食播種面積，優化糧食品種結構，著力提高糧食單產。
  6. Rice is one of the primary grain crops in the world, while the ratio of japonica rice to rice is very low, by 2001 the world sown area of japonica rice was10, 844, 860 ha, accounting for 7. 16 percent of the paddy harvest acreage, and the output of it was 72. 62 million tons, accounting for 12. 25 percent of the total rice output

    水稻是世界上重要的糧食作物之一，粳稻在水稻中所佔的比重不大， 2001年世界粳稻播種面積為10844 . 86千公頃，占當年稻穀收獲面積的7 . 16 ，產量為7261 . 75萬噸，占稻穀產量的12 . 25 （筆者根據fao統計資料及其它相關資料推算） 。
  7. Firstly, this paper has to solve the problem of how to separate the data of japonica rice from rice, for until now the authorities has n ' t published japonica rice production statistical data in china. by means of overall survey, typical survey and the collection of correlated statistic materials, this paper calculates the sown area and output of japonica rice of every one of japonica rice production provinces and all over the country, obtains the dates of consumption and trade of japonica rice in china and the world

    本文首先要解決粳稻（米）數據從水稻中剝離的問題，因為直到現在，我國還沒有粳稻生產的統計數據，通過全面調查、典型調查和相關統計資料的收集，推算出我國相關各省區的粳稻面積和產量以及全國的粳稻種植面積和產量，得到我國粳米的消費和貿易數據，以及世界粳稻的生產和貿易數據。
  8. Soil moisture availability is the major factor limiting the area sown to crops and their yield

    土壤水分有效性是限制栽培作物面積及其產量的主要因素。
  9. Until 1980, the sown area of japonica rice in our country was only 11 percent of total rice, and the output of it was merely 10. 76 percent

    直到1980年，我國粳稻種植面積只佔水稻的11 ，粳稻產量也僅為稻穀總產量的10 . 76 。
  10. Given a relatively stable sown area, china can achieve its desired total grain output target if the annual average increase rate of per unit area yield is one percent from 1996 to 2010 and 0. 7 percent from 2011 to 2030

    在播種面積相對穩定的前提下，只要1996 ? 2010年糧食單產年均遞增1 ， 2011 ? 2030年年均遞增0 . 7 ，就可以達到預期的糧食總產量目標。
  11. At present, the entire area for chinese traditional and herbal medicine sown area amounts to 25, 000 mu, the chinese goldthread rhizome standardization sown area has amounted to 15, 000 mu, and 10 chinese goldthread rhizomes chinese traditional medicines bases village have been completed with yearly production 3, 800 tons

    目前全區中藥材種植面積達2 . 5萬余畝，其中黃連標準化種植面積已達1 . 5萬畝，已建成10個黃連中藥材基地村，年產3800噸。
  12. In recent 20 years, the japonica rice production has been developing relatively fast, by 1990 the sown area of it was 16 per cent of the total area of rice, the output was 17. 76 per cent of the total output of rice ; in 2001, they rose to 23. 13 per cent and 25. 83 per cent respectively

    近20年來，我國粳稻生產發展較快，到1990年粳稻種植面積已佔到水稻的16 ，產量已佔到17 . 76 （前人調查） ；到2001年又進一步分別增長到23 . 13和25 . 83 （筆者調查） 。
  13. 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。
分享友人
分享到 Line

分享到臉書