crop area 中文意思是什麼

crop area 解釋
播種面積
  • 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，...
  • 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. In this paper, two major types, the natural vegetation and crop vegetation in luota are studied. we can gain the different distributive area by remote sensing technology, in accordance with conifer forest, broadleaf forest, thick shrub forest, shrub forest, herbs shrub forest, herbs naked rock and crop vegetation. the valuation of the output of standing trees, water conserbancy, soil conserbation to control erosion and purify the air is the main basis which is used to value the functions of the forest ecosystem of the conifer forest and broadleaf forest of luotathe result reveal that the total ecological function value of the forest which area is 1388. 8 hm2 is estimated up to 18. 36 million yuan per annum. the synthetic valuation system of luota vegetation is put forward by the valuation of per hm2 in evergreen - deciduous forest, conifer forest, conifer and broadleaf forest, broadleaf forest, scatteredtree - shrub forest, coppice - shrub forest, herbs shrub forest, econamic crop and cereal crops. the plant resources is valued according to the ornamental and green plant. lumber trees and medical plant. ornamental plant includes hosta plantaginea. lilium brownii van viridulum, spiraea cantomiensis and so on. lumber tuees includes zzzelkova schneideriana, emmenopterys henryi, catalpa fargesii and so on

    本文把洛塔現存植被分為自然植被與栽培植被兩大類進行研究，通過遙感技術對現存植被按針葉林、闊葉林、密灌、灌叢、草灌、荒草裸巖、農作物植被等類型進行分佈面積的統計，在此基礎上，以林產品價值、涵養水源價值、保護土壤價值和凈化空氣價值作為估算的主要參考依據，對已成林的針葉林與闊葉林進行森林生態系統的價值估算，得出面積為1388 . 8hm ~ 2的針葉闊葉林的森林生態價值為1836 . 37萬元，參照這一生態價值量，把洛塔植被按常綠落葉林、針葉林、針闊混交林、闊葉林、疏林?灌叢、矮灌叢、荒草灌叢、經濟作物和糧食作物，以每hm ~ 2的價值量提出了洛塔植被的綜合價值體系。
  2. Standing crop the total weight of all the living organisms present in an ecosystem at a given moment, usually expressed as dry weight per unit area

    現存量：某一給定時刻，生態系統中所有活的有機體的總重量。通常的表述是單位區域的干重。
  3. The thesis is based on income question, forest coverage rate and grop production. to beging with, date envelopment analysis is proved that it can be applicated into grain for green in shan - bei district, and then in view of the fact, seven esential factors which have influence on the project are found out : expense of dam, expense of crop, expense of cash tree, expense of defense tree, other economic crop, expense of grass and graziery ; and the output factors include : income of gdp, pure income per captia, the area of decreasing land loss, graziery income, crop production, income of tree, the totle income of economic crop. after the date of each facts are puted into dea model, unefficiencial decision making units ( dmu ) found. the data that are got through adjusting unefficiencial dmus dy dea can offer guide in shanbei district upgrading of an industrial structure. at the same time, taking into account some possible problems in or after grain for green in shan - bei district, the thesis bring out some propesal to improve the circ umstance, enhance the life level and put the relation of population, resource and circumstance into a healthy orbit

    因此，加快退耕還林還草，調整土地利用結構和產業結構，已成為實現山川秀美工程和可持續發展戰略的必經之路。論文以解決陜北地區的收入問題，植被問題以及糧食產量問題為出發點，首先從理論上分析了包絡分析方法在陜北地區退耕還林（草）中運用的可行性，然後結合陜北地區目前的實際情況，綜合分析出影響陜北地區退耕還林（草）的關鍵的七個因素作為輸入指標：水利水保設施投入，農作物投入，經濟林種支出，防護林支出，其它經濟作物，草類支出，畜牧業投入；以退耕還林所要解決的最終問題作為輸出指標： gdp收入、農民人均純收入、水土流失減少量、牧業總產值、糧食產量、林業總產值、其他經濟作物總產值。將各指標所對應的數據代入模型后，通過分析求解得出非有效的決策單元，再運用包絡分析方法的一些基本原理對非有效的決策單元進行調整，由此所得的數據對陜北地區的實際投入具有很好的指導意義。
  4. The results indicate that ( 1 ) land production is on the basic development level, the restrictive factors of land production are the ratio of land production, product of crop, the area of medium and low production, multiple crop index

    研究結果表明：土地生產力處于基本可持續發展階段。土地生產率、公頃糧食產量、中低產田的面積、復種指數等對土地生產力的持續發展起限製作用；資源環境保護從初步可持續發展到基本可持續階段。
  5. Sunflower is an important oil crop in semi ? arid area and arid areas of north china and north - west china. it is also a major vegetable oil source of the residents live in these areas

    向日葵是我國華北、西北、東北半乾旱、乾旱地區種植的主要油料作物，也是這些地區居民食用植物油的主要來源。
  6. About 30 per cent of the apple crop in the united states is produced in this area.

    美國大約有30的蘋果產量出於本區。
  7. Responses of soil water and fertility to the alfalfa crop rotation in semiarid loess area of china

    半乾旱區不同作物與苜蓿輪作對土壤水分恢復與肥力消耗的影響
  8. The industrial competitiveness is analysed above the following aspects : market supply and demond, price competitiveness, comparative superiority, technical potentialities and support policies. we raise some tacticses to the sustained growth of sugar industry, those are superior producing area construction, enhancing the key technical competitiveness, trade protection and support under the frame of wto, particularly disscuss the construction of sugar crop base and quality standard technical barrier. in the end, some policies for the sustained growth of sugar industry are provided

    文中從市場需求、價格競爭、比較優勢、技術發展潛力和政策保障等方而並結合案例分析了我國蔗糖產業發展的競爭潛力;提出了產業可持續發展的策略:建設優勢產業帶、培育核心技術競爭力、在w 』 l ， （ ）框架下實施國內保護和支持，還分析了應用「綠箱」 、 「黃箱」政策加強糖料基地建設和構築質量標準技術壁壘的建議，以及從宏觀方面推動蔗糖業可持續發展的政策措施保障。
  9. Analyses of sowing dates and heat conditions in cultivation of fresh - cooking maize quot; zhongyunuo quot; no. 2 under three - crop year system in shanghai area

    中玉糯二號在上海地區一年三熟栽培播期和熱量條件分析
  10. Tea crop area, harvesting area, per unit area yield, gross output, and the total agricultural output value of the tea industry are analyzed and assessed by using regression model analysis

    運用回歸模型對茶葉種植面積、採收面積、單位面積產量、總產量、茶葉農業總產值進行分析和預測。
  11. The sugarcanes had absolute priority. there were six leading crop production belts in taizhou region : ( 1 ) grain production mainly in xian ' ju and linhai county, whose production area was 34500 ha in 2002, accounting for 35. 2 % of the

    臺州市仙居、臨海是主要的糧食生產基地， 2002年糧食種植面積為34 . 5千公頃，占臺州市糧食種植面積的35 . 2 % ，占該縣、市的85 . 5 % 。
  12. The result of experimentation on coupling effect of water and fertilizers on spring corn in the three gorges reservoir area indicate that water stresslead the effect low of highness and lai, and the most effect is made in shooting stage ; it has a significant positive correlation between the yield of corn and biomass, and hasn ' t none significant positive correlation between the yield of corn and the weight of roots ; the coupling effect of water and n is significant, but the coupling effect of water and k is not significant, the maximum yield of corn condition fitting - water and medium n, corn absorbs n has a threshold value during the growth, and using superfluous n is able to prick up soil drought and crop drought ; water is the leading factor which effects the yield of corn, next is n and k

    摘要三峽庫區春玉米盆栽水肥耦合試驗研究結果表明，水分脅迫導致玉米株高和葉面積指數降低，以拔節期受到影響最大；玉米產量與生物量呈顯著正相關關系，產量與根重無顯著正相關關系；水氮耦合效應顯著，適宜水分和中氮處理下玉米的產量最高，玉米生長發育對氮肥的吸收存在一定的閾值，過多施用氮肥會加劇土壤乾旱和作物乾旱，水和鉀耦合效應對玉米產量影響不顯著；水分是影響玉米產量的主導因素，其次是氮效應和鉀效應。
  13. Based on cultivating experiment of corn from 1996 to1999, the field researches on corn in arid mountainous area of changping was made on the sowing period, maize varieties, density of crop, methods of fertilizer application and mode of planting. furthermore, it is in this article that the system of cultivation techniques of high yield corn is discussed

    1996至1999年進行多年玉米旱地栽培試驗，對昌平山區旱地玉米的播期、品種、播種密度、施肥措施、種植方式進行了分析研究，探討了昌平山區旱地玉米的高產栽培技術體系
  14. Abstract : the paper summarized the present situation of nitrate pollution in some area of our country where the surface water, underground water and vegetable crop were polluted by using nitrogen excessively, put forward some proposals and control countermeasures to prevent the nitrogen pollution in agriculture ecology environment such as draw up the " pollution prevention administrative stipulate for farm land fertilizer application "

    文摘:概述了我國部分地區因過量施用化肥氮而導致對地面水、地下水及蔬菜造成硝酸鹽污染的現狀；提出了制定《農田施肥污染防治管理規定》等防止農業生態環境氮污染的對策意見。
  15. A series of sandstone beds may crop out in one area.

    一組砂巖層可在某地區露出。
  16. The major driving factors for farmland change in yulin region are total population, the average farmer income and the proportion of agricultural labors, and there is a negative correlation between farmland area and the factors including total population, total crop production, total rural social production value and total social input

    典型區（榆林地區）耕地變化主要驅動力是總人口、農民人均年收入和農業人口比重，而總人口、糧食總產量、農村社會總產值和社會總投入與耕地面積呈負相關。
  17. In the outside wreath west side, the sand turns the phenomenon particularly serious, near more than 2000 acre lands is basic shabby, divided by to plant the bean excluding, the other farm crop is basic to grow, the hanchuang intends to plan and prepare in the native area an upscale golf course, lease each every year in fee roughly 300 - 500 dollar renminbi

    在外環西側，沙化現象尤其嚴重，近2000餘畝土地基本荒蕪，除種植豆類以外，其他農作物基本不能生長，韓莊鄉擬在本地區籌劃一高檔高爾夫球場，租賃費每畝每年約300 - 500元人民幣。
  18. Compared to the area of cereal, cash crop and vegetable in shunyi district with that of china, the proportion of cereal and cash crop area was at lower level, whereas the proportion of vegetable area is far more than that of whole china, indicating the characteristic of dominance situation of horticulture landuse in suburb of big city life breijing

    從種植業的糧、經、蔬三元結構與全國比較來看，順義區糧食作物和經濟作物比重偏小，而蔬菜作物的比例卻遠遠高於全國。這樣的土地利用格局反映了大城市郊區都市型農業用地以糧為輔，蔬菜、園藝為主的特色。
  19. Follow the mesa between the sea plain and central mountainous country, develop for the tropical cash crop area much

    沿海平原和中部山地之間的臺地，多開辟為熱帶經濟作物區。
  20. In 2003, six principal countries ( usa, argentina, canada, brazil, china, and south africa ) grew 99 percent of the global transgenic crop area

    2003年，美國、阿根廷、加拿大、巴西、中國和南非種植轉基因作物的面積佔全球同類作物種植總面積的99 % 。
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