leading crop 中文意思是什麼
leading crop
解釋
主要作物-
Rubber tree ( hevea brasiliensis ) is an important economic woody - crop in tropical areas. its latex is the unique source of crude rubber used in current industry. because of its special and important use, the rubber tree has been extensively planted in tropical areas. increase production is always the main target in rubber tree cultivation. since the ethrel was applied in increasing latex production in 1968 for the first time as a chemical stimulant, not only the latex production had been increased largely, but also a new set of rubber tapping system had been established, leading to a series of economic benefit. owing to ethrel " s extensive application, its side effects had been found more and more obviously, such as tapping dry, speeding up senescence, shortening the life span of rubber tree etc. in order to overcome the side effects and increase production more availably, for a long time, people had carried out lots of research work on cell level, membrane level, physiology and biochemistry of laticifer contents. but the mech anism why ethrel increased latex production was not yet understood completely. this study had cloned the ethylene receptor gene ( efrl ) from rubber tree, and researched the relationship between etrl expression in laticifers and ethrel stimulation on transcription level and protein translation level. the results were as follows : 1
但是，由於乙烯利應用的普及，乙烯利刺激割膠引起橡膠樹發生死皮病及加速膠樹衰老，縮短膠樹壽命等副作用也越來越明顯。為了克服這些副作用，使乙烯利能更有效地刺激增產，長期以來，人們在細胞水平、膜水平和乳管細胞內含物的生理生化層面上進行了大量的研究，但仍未完全了解乙烯對膠樹的作用機制。本研究從分子水平入手，克隆橡膠樹的乙烯受體基因（ etr1 ） ，並在轉錄水平和蛋白質翻譯水平上研究etr1基因在乳管細胞中的表達及與乙烯刺激的關系，取得了以下結果： 1 -
Syngenta is the world ' s leading crop protection company and ranks third in the high - value commercial seeds market, and more than 19, 000 employees in over 90 countries
先正達是全球領先的植保公司，並在高價值商業種子領域排名第三，在全球90多個國家擁有超過19000名員工。 -
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 % 。 -
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。 -
Two of the leading growers tell me that they have been expecting a splendid crop this year and harvesting has begun earlier than usual.
兩名主要種植者告訴我，他們期待著今年會有一個極好的收成，而且收割要比往年早。 -
California is the leading fruit state, producing over one-fourth of the total united states fruit and nut crop.
加里福尼亞是果品的首要產地，生產的水果和乾果超過美國果品總量的14。 -
The united states and china are leading producers of greenhouse gases. these gases threaten to raise sea levels, damage our crop production, and spread deadly disease
此約仍然是美國武器管制的重大成果之一，若其執行出現問題，會危及俄羅斯正在進行的裁減核武行動。 -
In time, a crop of new directors emerged to overtake local cinema, and with them, a succession of leading male stars. but there has yet to be another mature father figure
香港影壇由后進導演接班，再塑造了一代又一代的天皇男星，可惜至今仍未能成功地重建成熟的父親形象。 -
California is the leading fruit state, producing over one - fourth of the total united states fruit and nut crop
加里福尼亞是果品的首要產地，生產的水果和乾果超過美國果品總量的1 4 。
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