secondary crop 中文意思是什麼
secondary crop
解釋
伴作物-
There were many reasons for this, but i believe an important factor was the explicit and implicit oppression of the hong kong people by british colonial policies, which angered the parents who, in turn, sent their children to the chinese schools. therefore, the best chinese schools then had the cream of the crop among hong kong ' s secondary school students
這裏面原因很多，但是我想一個重要原因是當時英國殖民政策有形無形地壓迫港人，激起家長們的憤恨，紛紛將子女送入華文學校，所以最好的幾所華文中學擁有當時最好的香港中學生。 -
Eng. ) 1. the fertilizer defines, uses the present situation ; 2. three major elements of fertilizer in the soil ; 3. characteristic and using the three major elements fertilizer rationally ; 4. characteristic and using the secondary and microelements fertilizer rationally ; 5. the kind and characteristic of the organic fertilizers and using rationally ; 6. the composting of organic fertilizers ; 7. green manure crop ; 8. influencing factors of the fertilizer effects ; 9. principle and practice of the fertilizer uses ; 10. characteristic and using the compound fertilizers rationally ; 11. foliar application ; 12. fertilizer management regulation
中） 1 .肥料定義、使用現況； 2 .土壤中的肥料三要素； 3 .三要素肥料的特性與合理施用； 4 .次微量要素肥料的特性與合理施用； 5 .有機質肥料的種類與合理施用； 6 .堆肥製造； 7 .綠肥作物； 8 .影響肥料效應的因子； 9 .肥料施用的原理原則； 10 .復合肥料的特性與施用要領； 11 .葉面施肥要領； 12 .肥料管理法規。 -
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。 -
Presently the crop stalks - based biomass gasification and centralized gas - supply system is n ' t still perfect. the main factors are : 1 ) the purifier system having problems such as huge device, bas motion and low purifier efficiency so on ; ( 2 ) bad disposal of tar causing the secondary pollution
目前，生物質秸稈氣化與集中供氣系統尚不完善，主要原因一是凈化系統存在設備龐大、運行不穩、凈化效率低等問題；二是凈化后焦油的處理不善，會造成二次污染。 -
On one hand fertilizer rate must be in accordance with soil fertility and crop ' s nutrient property ; on the other application should abide by the principle of combining the organic manure with inorganic nutrients and primary with secondary and micro - nutrients
一方面施肥量必須與土壤肥力和作物養分特徵一致；另一方面應當有機肥與無機養分配合施用，大量元素、中量元素和微量元素配合施用。
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