結狀生長物 的英文怎麼說

中文拼音 [jiēzhuàngshēngzhǎng]
結狀生長物 英文
nodular growth
  • : 結動詞(長出果實或種子) bear (fruit); form (seed)
  • : Ⅰ名詞1 (形狀) form; shape 2 (情況) state; condition; situation; circumstances 3 (陳述事件或...
  • : Ⅰ動詞1 (生育; 生殖) give birth to; bear 2 (出生) be born 3 (生長) grow 4 (生存; 活) live;...
  • : 長Ⅰ形容詞1 (年紀較大) older; elder; senior 2 (排行最大) eldest; oldest Ⅱ名詞(領導人) chief;...
  • : 名詞1 (東西) thing; matter; object 2 (指自己以外的人或與己相對的環境) other people; the outsi...
  • 生長 : grow; grow up; ascent; merisis; build up; auxesis; increment; overgrowth; gain; burgeon; bourgeon...
  1. In this paper the floral ontogeny and the ovary development of rivina humilis l. were observed. the results showed that ( 1 ) the tepal primordia initiated in 2 / 5 spirals. the abaxial one initiated first, then the adaxial one, finally the lateral two initiated nearly simultaneously. the third one initiated on the position near the first tepal, and there is a gap between itself and the second tepal. ( 2 ) the 4 stamineal primordia initiated in one whorl at the same time. ( 3 ) the carpellary primordium initiated from the abaxial side of flower primordium ; the carpellary primordium grew upwards and towards axis after it was formed, therefore an elliptic orifice was formed at the adaxial position of ovary, which was the remainder of the mouth of ovary before the ovary was fused completely. with the ovary maturing, the orifice was narrowed because of the ovary growth, at last fused completely. the gynoecium is composed of a single carpel. ( 4 ) in the series developmental sections of ovary, the ovular primordium was initiated on the adaxial meristem when the mouth of ovary was formed

    對數珠珊瑚的花器官發和子房的發育過程進行了觀察.果表明: ( 1 )數珠珊瑚花被呈2 / 5螺旋,遠軸側的1枚先發,其次為近軸側的1枚發,最後側方的2枚花被幾乎同時發,第3枚花被在靠近第1枚的位置發,第2枚和第3枚之間有1個空隙; ( 2 ) 4枚雄蕊是同時發的; ( 3 )心皮發於分組織的遠軸側,心皮原基形成后,向上向軸,在子房成熟前在近軸側非正中位形成1個孔,該孔為心皮最終愈合前的殘跡,到子房成熟時,因子房的孔被擠壓縮小,在進一步的過程中愈合.子房由1枚心皮構成; ( 4 )從子房發育過程的切片看,該植的胚珠是在子房發后不久發的,子房上的圓孔形成時,從近軸側的分組織發胚珠原基,由胚珠原基分化出珠被與珠心
  2. At first, this research summarizes and analyzes the natural zoology conditions, such as district ’ s boundary, geography position, climate characteristics, geologic and appearance, soil, vegetation and so on, social economy, the whole developing situation of the stockbreeding in the yellow river delta area. the result is : the yellow river delta is the area with a specific zoology system and rich natural resource. the proper geological environment, favorable climate conditions offer the advantaged conditions for the growing of pasture and feedstuff, the big superficial natural and artificial grass land and a large number of cropper straws establish a good material base for the vegetarian especially for sheep

    1 、通過對黃河三角洲地區的區域界定、地理位置、氣候特徵、地質地貌、土壤植被等自然態條件,以及社會經濟況、畜牧業整體發展情況進行分析,果表明:黃河三角洲是一個具有獨特態系統和豐富自然資源的地區,該區特有的地質環境、良好的氣候條件為牧草及飼料作提供了有利條件,大面積的天然草場和人工草場以及大量的農作秸稈為食草家畜,特別是羊的大發展奠定了良好的質基礎。
  3. The results show that : 1 ) though the water environment of nanyisan is more muddy than others, algal can still grow ; 2 ) the composition and rock type of the algal limestone are complex, the main rock types include lettuce - like stromatolites, algal reef, digitate stromatolies, wave - like stromatolites and so on ; 3 ) the deposits of algal limestones were formed in low - energy peritidal to subtidal high - energy environment of lakeshore slopes, sliding under the action of gravity and some other factors and become slump mixosedimentite layers ; 4 ) the physical property of algal limestones layers is better than others ; 5 ) the genetic development of the sediment decides that the single deposit is small, distributive and thin - layed

    果表明,南翼山藻灰巖沉積水體環境相對渾濁,但藻類仍能;該區藻灰巖巖石組成及類型復雜,主要的藻灰巖巖石類型有包心菜疊層石、藻礁、指疊層石、水平波疊層石等;其主要為濱岸斜坡上低能潮上環境至高能潮下環境形成的沉積體,在重力等因素的作用下產滑動或滑塌形成的微成因的滑塌混積巖;巖層性好於其它巖層;藻灰巖層的成因決定了該地區單個沉積體規模小、分散、層薄。
  4. Abstract : the biological control effect on fruit tree insects and eco - economic benefit of interplanting mentha spicata with orchard was studied and analysed based on field polt experiment. the result shows : interplanting mentha spicata with orchard have obviously biological control effect on fruit tree insects like phyuoenistis eitrella stainton, papilio xuthus l, phyllocoptruta oleivora ashmead and myzus perieas sulzer ect, interphanting mentha spicata with slope orchard could reduce soil and water losses, and improve soil physical - chemistry property effectively, its also accelerate fruit tree growth and increase the yield of fruit tree, and has good economic benefit

    文摘:在野外小區試驗的基礎上,對果園套種留蘭香防治果樹蟲害的作用及其態經濟效益進行了研究和分析,果表明:果園套種留蘭香對潛葉蛾、柑橘鳳蝶和桃蚜等果樹害蟲有明顯的防治效果;在坡地果園套種留蘭香能有效減輕水土流失、改善土壤的理化性,促使果樹的和提高果樹的產量,並具有良好的經濟效益
  5. The results show that the indoor air is unpolluted and the main contamination is particulates with diameter of 10 m or less, total volatile organic compounds and ozone ; the pollution mostly comes from personnel, merchandise and outdoor air ; the unacceptability ratio of the indoor air quality is 22. 64 %, so the indoor air is unacceptable ; indoor persons have caught sick building syndrome ( sbs ) ; long time and low concentration pollution is an important characteristic of indoor pollution ; and the satisfied degree of indoor persons on the temperature, relative humidify, illumination and vision is very high

    果表明,商場室內處于未污染況,主要污染是可吸入顆粒、總揮發性有機化合和臭氧;主要污染來源於顧客、商品和室外空氣;商場內人員對室內空氣的不可接受率為22 . 64 % ,室內空氣屬于不可接受;室內人員已有病態建築綜合癥發時間低濃度污染,是室內污染的重要特徵;室內人員對商場的溫度、相對濕度和室內光照度、視覺環境等滿意程度很高。
  6. Background : ghrelin is a 28 - amino acid endogenous peptide recently identified in the secretory granules of x / a - like cells in the rat stomach, which can act on the growth hormone secretagogue receptor to accelerate the secretion of growth hormone. it was identified that ghrelin - immunoreactive cell and its receptor localize in areas of brain, such as hypothalamus ( pvn, arc ), hippocampus, adenohypophysis and so on. motilin is a 22 - amino acid peptide secreted from the upper part of the small intestine, which regulates the interdigestive motility of gastric

    背景資料: ghrelin是新發現的由28個氨基酸組成的內源性腦腸肽,由胃部泌酸腺x / a樣內分泌細胞分泌, ghrelin免疫活性神經元及其受體在中樞神經系統中如下丘腦室旁核( paraventricularneucleus , pvn ) 、弓核( arcuatenucleus , arc ) 、海馬區及腺垂體等均有不同濃度的分佈,可與素促泌受體( growthhormonesecretagoguereceptor , ghsr )合促進素( growthhormone , gh )分泌。
  7. A reliability experiment of thermal aging was carried out for the two types of joints, scanning electron microscopy, energy dispersive x - ray spectrometer and micro x - ray diffractomer were adopted to investigate the interfacial evolution behavior of joints, and kinetics model of imc formation was established. the results show that imc growth follows the parabolic law as a function of aging time at certain aging temperature, imc growth is more sensitive to the aging temperature than the aging time, the activation energy of cu - al imc growth is 97. 1kj / mol and the major forming cu - al imc are cual2 and cu9al4, the activation energy of au - al imc growth is 40. 1kj / mol and the main au - al imc are au4al and au5al2, with au2al and aual at the interfacial periphery of joints, the rate of cu - al imc growth is about 1000 times slower than that of au - al imc, and kirkendall voids and cracks are easily appeared during thermal aging in gold ball bonds while voids and cracks are absent in copper ball bonds even after aging at 200 for 2900 hours and 250 for 169 hours

    研究果表明:金屬間化合厚度與老化時間的關系符合拋線法則,金屬間化合對老化溫度比老化時間更加敏感; cu - al金屬間化合的激活能為97 . 1kj / mol ,老化后金屬間化合呈層分佈,主要相為cual2和cu9al4 ; au - al金屬間化合的激活能為40 . 1kj / mol ,主要相為au4al和au5al2 ,同時在界面周邊區域成了au2al和aual ;老化過程中cu - al金屬間化合速率比au - al金屬間化合速率小103數量級;金絲球鍵合點200老化96小時出現了明顯的kirkendall空洞和裂紋,但銅絲球鍵合點200老化2900小時和250老化169小時都沒有形成空洞和裂紋。
  8. Moreover the cases of evaluating the fish resources in the upper yangtze river by using basic data were much less. this research evaluates the fishery status in the upper yangtze river by using commercial fisheries data of hejiang section from 1999 to 2002. the age, growth and mortality of rhinogobio ventralis which is endemic to the upper yangtze river have been studied also. moreover we have estimated the biomas s of rhinogobio ventralis

    本文是在實地調查的基礎上,合水流動監測站合江站1999 - 2002年的監測果,對江上游合江段的漁業捕撈現進行了評估,研究了重要的經濟特有魚類鰭吻?的年齡、和死亡,並對其資源量進行了估算。
  9. In light of current using situation and drawing on the experience of many scholars researched methods and viewpoints, this thesis made com land, fallow land, orchard, grass land as experimental field in black soil region jlau, which carried out experiment by applying different amounts of n and p fertilization in corn field. by means of collecting the samples of rainfall runoff, erosion silt and surface layer soil before and after rainfall for one year nature precipitation in field, we study the effect of surface runoff on n and p nutrient and fertility degeneration. the results showed : ( l ) there are lots of factors which affect soil erosion and losses of n and p, in which rainfall and rainfall intensity were more important, while rainfall intensity is the most important meteorological phenomena factor

    針對當前黑土利用現,本文借鑒眾多學者的研究方法和觀點,在吉林農大黑土區選擇利用方式不同的玉米地、休閑地、果園、草地,在玉米區進行了不同數量的施肥,通過野外試驗,採集一年自然降雨產流及泥沙樣品,同時採集降雨前後的耕層土壤樣品,研究了黑土區地表徑流對氮磷養分特徵及肥力退化的影響,果表明:土壤侵蝕和氮磷的流失受諸多因素的影響,降雨量、降雨強度是重要因子,而降雨強度是影響農田地表徑流養分流失的最重要的氣象因子,特別是暴雨,暴雨徑流中氮磷濃度較平時高得多;隨作,覆蓋度逐漸增加以及不同利用方式下表現的覆蓋度差異,氮磷流失都表現為顯著的差異。
  10. Four species of ceratiodes were studied about organic morphology and embryonal development and biological characteristics. the results were showed as follows : c. arborescens and c. ewersmanniana were more dominant than c. latens and c. lanata in spire and vegetative period. in flowering phase of male flower, c. arborescens and c. latens arrive the maximum peak of flowering during 8 : 00 - 11 : 00. c. lanata arrive the maximum peak of flowering during 11 : 00 - 1 : 00, but in flowering phase of female flower, three species arrive the maximum peak of flowering in 14 : 00 ; temperature of female flower was righter than one of male flower

    本文對駝絨藜屬4種植進行了器官形態學及解剖學、胚胎發育及學特性的研究,果表明: 4種材料幼苗期和營養期的況均是華北駝絨藜、心葉駝絨藜比駝絨藜、北美駝絨藜占優勢;開花規律,華北駝絨藜和駝絨藜雄花均在8 : 00 - 10 : 00達開放高峰,北美駝絨藜在11 : 00 - 1 : 00達開放高峰,而三者雌花均在14 : 00左右達開放高峰。
  11. The second chapter studies the economy of ship ' s power plants, based on the aspects of lowering fuel cost, waste heat recovery, the match of ship, machinery and propeller, increasing propulsion efficiency, increasing the economy of ship ' s power plants, etc. the third chapter discusses in detail the control measures of voyage change cost, analysizes systematically the voyage change cost based on the way of fuel cost, harbor cost, voyage venture cost. the fourth chapter studies the structures and control measures of seafarers cost, maintenance cost, spare parts and stores cost, lubricating oil cost, etc. which are relatively easy to be controlled ; based on the state maintenance decision - making, a mathematical model is put forward, the validity and its solve process are discussed. the control measures of spare parts, fuel cost and lubricating oil cost should be based on scientific budget, through the control means of application, reception, usage, store check, try to acquire the inosculation of theory

    第一章主要討論營運船舶運輸成本,對船舶運輸成本的概念、構、性質與分攤、成本細分進行了分析,從宏觀上闡明了船舶運輸成本的存環境和趨勢;第二章研究了船舶動力裝置的經濟性,在營運船舶降低油耗、廢熱利用、船機槳匹配、提高推進效率、提高船舶動力裝置經濟性的有效途徑等方面進行了闡述和論證;第三章詳細論述並論證了航次變動成本的控制措施,全面系統地分析和總了航次變動成本,通過對燃油成本、港口使費、航次風險成本的分析與控制,提出了航次風險成本的概念並論述了若干航次風險成本的控制措施;第四章對船舶營運成本中的船員費用控制、維修保養及其費用控制、船舶備件料管理及其費用控制等幾個主要可控性較高的成本進行了細致的分析並分別討論了相互的控制措施,提出了基於態維修決策的馬爾可夫數學模型並論證了模型的正確性及具體解算步驟,對于備件、燃潤料的控制堅持以科學的預算為前提,以申領、接收、使用、盤存為控制環節,切實做到理論與實踐的密切合;第五章,合營運成本的預核算的案例,對船舶營運成本的預算及核算進行了有益的探討,旨在揭示成本發的動因,並給出了成本預算、核算的編制方法。
  12. In order to select male nucleo - sterile new genotype, a tentative idea was put forward for the nucleo - male sterility to attach a tps ( thermo - photoperiod sensitivity ) and a selection strategy of combination of selection and identification, at the same time, the spring and summer sowing method were used to provide different environment conditions of appraising sterility and tps. the results indicated that ( 1 ) sterility could be appraised under the spring sowing environment and tps could be appraised under summer sowing environment. ( 2 ) under spring sowing environment, sterility could be selected, but not maintained. thereby, lines selected could only be selected as recorded selection method in the experiment. ( 3 ) and then, selection was carried out from spring sowing line selected into summer sowing in same line with tps to select plants. these plants through the intercrossing selection had been combined with sterility and tps. in this way, a new selection protocol for selection sterile line with tps was formed. it mainly involves the spring and summer sowing method, recorded selection method and the intercrossing selection method

    為了選育新類型玉米雄性核不育系,提出了為玉米核不育性添加溫光敏感性的設想和選擇與鑒定相合的策略,同時應用分期播種的方法為作提供不同的和發育的環境條件,以鑒定玉米雄穗的育性變化和對不同環境條件溫光的反應.研究果表明,春播環境下可鑒定和選擇玉米的不育性,夏播環境下可鑒定和選擇其溫光敏感性.針對玉米核不育性難以找到保持系的特性,合兩種播期選擇兩種性.但春播環境下選擇的不育性群體難以通過選擇單株來保持其不育性,為記錄性群體選擇.通過從春播入選的雜合不育性優良株系群體轉移到其對應的夏播溫光敏感性入選的同一優良群體中進行優良單株選擇,能逐漸使不育性和溫光敏感性相合而選育出純合溫光敏不育系.這種新的選擇程序主要包括應用分期播種法、記錄性選擇法和春夏兩季交叉式選擇法,使含有不育基因的可育株系逐步累積不育基因並增加了溫光敏感性而育成玉米溫光敏不育系
  13. Results show that, clogging situation caused by interception and adsorption of suspend substances or by growth of microorganism, all tends to decrease with negative exponential from, following the increase of infiltration layer depth

    果表明,不管是懸浮截留、吸附,還是微,所造成的堵塞況都呈現出隨濾層厚度增加按負指數形式遞減的趨勢。
  14. This paper has analyzed twenty - year climatic data of typical cities in cold area, carried on lots number of field investigations and e xperiments, and systematically discussed improvement strategies for indoor physical environment of the ground floor room of residential buildings. though investigation of its thermal, sound and lighting environment it ' s found that there are many problems in this kind of room. those are : seasonal wetness, mold and fungus growing, destroyed structure and furniture etc, insufficient illumination, and bad ventilation condition

    得出寒冷地區住宅底層室內熱環境、聲環境、光環境的實際況,論表明,寒冷地區住宅底層存在的問題:季節性潮濕,高濕度導致黴菌、繁殖,潮濕的室內環境,導致建築維護構的內表面受潮起鼓,引起構破壞,室內傢具、電器、品的損壞,使得室內的衛況、人體健康都受到影響:採光的明顯不足、通風散熱能力較差等。
  15. All patches adjacent to water are excotone and they have twist edges and narrow figure, which is suitable with the function of the frequency of exchanging the matter and energy, what ' s more, these patches are mixture in the plant community styles, which is according with the importance character of the excotone which is that many system coexist. 3 ) : the dissimilarity of plant community is key factor in composing the landscape heterogeneity

    鄰水斑塊邊界曲折,形,多為混合型斑塊,這與態交錯帶多系統共存特性是相適應的。樹種構組成差異是構成花港觀魚公園綠地景觀異質性的主要因素,不同木本植群落類型在花港觀魚公園不同綠地斑塊類型中交錯分佈,同一斑塊類型內部群落相異性指數較高。
  16. The thesis consist of six chapters and based on the way of propose the question, analysis, then get the solution. it discussed and recognized what the ship transportation cost was in chapter one ; studied the environment and growing trend of the cost in chapter two ; fully discussed and demonstrated the voyage variable costs and controlling method, proposed a mathematic decision model of fuel supplying and get through the validation, proposed the concept of risking cost and addressing many controlling measures to it in chapter three ; discussed a certain running costs, proposed and validated a mathematic model of condition - based maintenance, and put forward many practical controlling method of running costs such as crew payment, repairs, spare parts, stores and lub oils in chapter four ; combining a case of monthly running cost budget and verification, performed a useful learning on running cost budget, forecast and verification in chapter five ; finally fully studied the method of cost - calculating and benefit - analyzing of time chartering container ships on a proposed route

    第一章主要討論並認清什麼是船舶運輸成本;第二章研究了船舶運輸成本的存環境和趨勢;第三章詳細論述並論證了航次變動成本的控制措施,提出了燃油補給方案的決策模型並給出了模型的驗證過程,提出了航次風險成本的概念並論述了若干航次風險成本的控制措施;第四章對船舶營運成本中的船員費用、維修保養費用、備件、潤料費用等幾個主要的可控性較高的成本進行了細致的分析並分別討論了相應的控制措施,提出了基於態維修決策的數學模型並論證了模型的正確性及具體解算步驟,對于備件、潤料的控制堅持以科學的預算為前提,以申領、接收、使用、盤存為控制環節,切實做到理論與實踐的密切合;第五章合營運成本的預核算的案例,對船舶運輸營運成本的預算及核算進行了有益的探討;第六章合具體案例對期租班輪的成本測算與效益分析方法進行了細致的研究。
  17. The physiological reaction of c. junos under iron stress in field experiments, c. junos manifested itself as tolerant to iron stress. no chlorosis symptom was not found in its leaves when it was grown in a soil with ph 7. 8. in contrast, severe chlorosis was found in the control plant p. trifoliata grown under the same soil conditions, and leaf chlorophyll content as an indicator for the degree of fe deficiency in p. trifoliata was much lower than in c. junos

    主要的研究果如下: 1 :鐵脅迫下香橙的理反應研究香橙在田間實驗中表現耐缺鐵,在ph7 . 8的土壤中正常,葉片無任何缺鐵癥;但對照植枳在同樣土壤條件下卻表現出明顯的缺鐵癥,作為缺鐵程度指標的葉片葉綠素含量極顯著低於香橙。
  18. It was also investigated and analysed on the styles of cross section in road green space, the rate of green space, the kind of green space, the quantity of plant spaces in green space, the format of planting. on the base of these, the planning designs of road green space in the blocks of heze city were also studied in combination with the practical situation which the city of heze were building to be a plain - plantation city with the flowers and water. the main results were as follows : 1. there were some problems about road green space in blocks of heze city, which were detected and researched. ( 1 ) the rate of road green space was low and the styles of cross sectionin road green space were simple

    本研究以菏澤城區道路綠地及街頭綠地為研究對象,對其綠地斷面形式、綠地率、綠地類型、綠地植種類、數量、種植形式等現進行了全面的調查和分析,在此基礎上,合菏澤近年創建以「花城水邑」為依託的平原森林城市建設的實際,對菏澤城區道路綠地規劃設計進行了研究,主要果如下: 1 .菏澤城區道路綠地存在以下問題: ( 1 )道路綠地率低,綠地斷面布置形式單一,中心島面積偏小; ( 2 )植種類少,景觀效果差; ( 3 )植配置形式單一,地方特徵不突出; ( 4 )某些植選擇不當,如遮陰功能差,影響交通安全等; ( 5 )行道樹與架空線存在矛盾,影響樹木,景觀效果差; 2 .根據荷澤實際情況進行了城區道路綠地規劃設計研究: ( 1 )提出了菏澤城區道路綠地規劃設計的依據、原則、總體布局、布局形式。
  19. The properties of cn thin films such as their morphology, component, crystal structure and the bonding structure and the relation between those properties and the gas - phase reaction parameters were discussed, showing that the deposition of p - c3n4 thin film is the compete result of various reaction processes in the dynamics balance conditions ; the process of cn films depo sition is diagnosed in situ through the optical emission spectra technique, the effects of experimental parameters on the concentration of the precursors and the gas - phase reactions in the plasma have been obtained ; the main reaction precursors for film deposition identified ; the relation between the characteristics of cn thin films and the reaction process in the plasma is analyzed. the cn thin films deposition under different substrate temperatures in high pressure pe - pld shows that the si atom of the substrate has participated the cn films growth process, based on this the growth mode of cn thin films on the si substrate is proposed. the further experiment of cn thin films deposition on si substrate scratched by diamond as well as covered with fe catalyzer has been attempted, which indicates that changing the dynamics conditions of the surface reaction can alter the growth characteristic of the cn thin films and can enhance obviously the films growth rate

    採用pld技術進行了碳氮化合薄膜沉積,得到了含氮量為21at的cn薄膜;研究了襯底溫度和反應氣體壓強對薄膜構特性的影響,給出了cn薄膜中n含量較小、 sp ~ 3鍵合構成分較少和薄膜中僅含有局域cn晶體的原因;引入脈沖輝光放電等離子體增強pld的氣相反應,給出了提高薄膜晶態sp ~ 3鍵合構成分和薄膜的含n量可行性途徑;應用pe - cvd技術以ch _ 4 + n _ 2為反應氣體並引入輔助氣體h _ 2 ,得到了含n量為56at的晶態cn薄膜;探討了cn薄膜形貌、成分、晶體構、價鍵態等特性及其與氣體壓強和放電電流的關系,證明了- c _ 3n _ 4薄膜沉積為滿足動力學平衡條件的各種反應過程的競爭果;採用光學發射譜技術對cn薄膜過程進行了實時診斷,得到了實驗參量對等離子體中活性粒子相對濃度和氣相反應過程的影響規律,給出了cn薄膜沉積的主要反應前驅,揭示了cn薄膜特性和等離子體內反應過程之間的聯系;採用高氣壓pe - pld技術研究了不同襯底溫度條件下cn化合薄膜的構特性,揭示了si原子對薄膜過程的影響,給出了si基表面碳氮薄膜的模式;在金剛石研磨和催化劑fe處理的si襯底上進行cn薄膜沉積,證明了通過控制材料表面動力學條件可以改變碳氮薄膜構特性,並可顯著提高晶態碳氮材料的速率。
  20. The am fungus could obtain adequate carbon resources for itself, thus ensuring normal growth and metabolic activit y owing to the efflux of carbohydrate from the plasma membrane of the host root cortical cells to the interface of the symbiosis. thirdly, the structure and composition of the root cortex cellular plasma membrane kept good integrity and the leakage of carbohydrate maintained at low level when the plant obtained enough p and metabolizes normally. although enough carbohydrate was synthesized by plant, the am fungi could not obtain enough energy, resulting in inhibition of growth of the extraradical hyphae and decreased metabolic activity of the am fungi

    由此,我們認為植磷營養況調控菌根真菌和代謝活性的機制是:當植處于嚴重缺磷脅迫時,不能合成足夠的碳水化合供給自身的需要,也不能向真菌提供額外的碳水化合,因而菌根真菌受阻,代謝活性較低;當植中度缺磷時,根皮層細胞質膜的組成和構不完整,通透性大,碳水化合通過質膜向外的滲漏量大,菌根真菌因而獲得充足的碳源,保證真菌正常的和旺盛的代謝;當植獲得足夠的磷而使體內磷營養代謝正常時,其細胞質膜組成和構完整,碳水化合的滲漏量保持在較低的水平,盡管此時植合成了足夠的碳水化合,但菌根真菌仍不能獲得足夠的能量,導致真菌受阻和代謝活性降低。
分享友人