soil available water 中文意思是什麼

soil available water 解釋
土壤有效水
  • soil : n 1 泥土,土壤;土質。2 土地,國土。3 滋生地,溫床。4 農業生活,務農。n 1 臟東西,污物,污穢,污...
  • available : adj. 1. 有用的,可利用的。2. 可以得到的,可以買到的。3. 有效的。4. 有當選希望的;願意參加競選的。adv. -bly 有效地。n. -ness 有利,有效,效用,利用。
  • water : n 1 水;雨水;露;〈常作 pl 〉 礦泉,溫泉;藥水。2 〈常 pl 〉水體;水域;水道;海;湖;河;海域;...
  1. They are jinfo mountain in nanchuan county ( natural protection section ), wuling mountain in qianjiang county ( national emphases forest demonstration county which forest cover rate is beyond 50 % ) and zhongliang mountain in beibei county ( artificial destruction is very grave ). some main land use patterns i. e. woodland, garden, infield, abandon infield, shrub and grassplot are selected in those three sample sites. four aspects on soil fertility index of karst environment under different land use patterns in these three sample sites, are revealed in this paper, by using the field test, indoor measure and analysis, outdoor experiment and field investigation, and the knowledge and technique of soil, ecology, physics and chemistry etc. they are physical characteristic ( effective soil thickness, organic layer thickness, soil texture, water - stable aggregate and soil water etc. ), chemical fertility ( organism, omni - n, omni - p, omni - k, alkali - nitrogen, available p, available k and rapid available k etc. ), soil animalcule ( bacteria, fungi, actinomyces and their grosses ) and soil - seed - pool ( plant community diversity index ) in karst ecosystem

    本研究以重慶市的南川金佛山(自然保護區) 、黔江武陵山(國家重點退耕還林示範縣,森林覆蓋率50以上)和北碚中梁山(遭人為破壞嚴重)典型巖溶區為對象,選擇了幾種重要的利用方式,包括林地、果園、耕地、棄耕地和灌草坡,採用野外巖溶生態調查和室內試驗測量分析相結合的方法,以不同土地利用方式巖溶土壤肥力為重點,對不同土地利用方式土壤肥力特徵進行量化分析,找出巖溶土壤肥力差異的主要方面及其根本原因,論文主要從土壤剖面物理退化指標(有效土層厚度、有機質層厚度、質地、團聚體、水分含量等) ,化學肥力退化指標(有機質、全n 、全p 、全k 、堿解n 、速效p和速效k等) ,樣地土壤微生物指標(細菌、真菌、放線菌數量及總量)以及樣地土壤種子庫植物群落多樣性等4個方面對重慶典型巖溶區的土壤肥力特徵進行了較為詳細的分析研究,為巖溶地區士壤資源的合理利用及結構的調控管理提供依據。
  2. The normal analytic technique was adopted to mensurate the basical nutrients such as total n, total p, total k, available n, available p, available k, organic matter, ph and so on. meanwhile, various techniques were employed to mensurate the soil dissoluble carbon, finally the technique of water saturating - h2so4 - agso4 - circumfluence - feso4 titration was used in this experiment

    測定土壤的基本養分狀況全氮、全磷、全鉀、速效氮、速效磷、速效鉀、有機質、 ph等採用常規分析法,對土壤可溶性碳的測定方法進行了多方面的探索,最後採用水提? h _ 2so _ 4 - ag _ 2so _ 4迴流? feso _ 4滴定這一方法。
  3. The empirical equation w = asb was used to fit water holding capacity of four kinds of agricultural soils in loess plateau. soil water holding capacity and unavailable water content increased as soil texture became clayed. available water content in loam was higher than those in sandy soil and clayed soil

    黃土高原四種主要農業土壤的水分特徵曲線並無明顯的平臺或拐點產生,其關系能夠很好地用garden經驗方程( w = as ~ ( - b ) )進行擬合。
  4. All the water retained in a soil is not equally available to plants.

    保留在土壤中的全部水分對植物的有效性是不一致的。
  5. Corn yields of phaeozem in " flat type " " boundary soil ( depth < 15cm ) reached 6. 65t / hm2. in addition to, content of available, water, organic carbon. cation exchange capacity and available n was the most in " flat type " boundary soil ( depth = 30cm )

    在吉林玉米帶黑土土壤物理環境方面,兩種不同形狀界面構造土壤在三相組成、有效土壤量、持水性能等方面差異顯著,相關分析表明,吉林玉米帶黑土玉米產量與耕層厚度、有效水含量呈明顯相關關系。
  6. The results show that the physical and chemical conditions of the corn belt phaeozem have significant different in different profile morphological characteristics. in another way, soil composition of three phases, content of available water, nutrient content and composition of humus have significant different in different profile morphological characteristics. among three groups of profile morphological characteristics, corn yields of phaeozem in " flat type " boundary soil ( depth = 30cm ) were the most, reached 8. 22t / hm2on average. corn yields of phaeozem in " wave type " boundary soil ( depth = 15cm ) reached 7. 55t / hm2 on average

    這兩種界面構造對玉米產量影響差異顯著, 「平面型」界面土壤抗逆性較強,產量最高,平均產量達8 . 23t / hm ~ 2 ,而「波浪型」界面土壤抗逆性較差,它可以分為兩種情況:當耕層厚度15cm時,產量處于中等水平,平均產量為7 . 55t / hm ~ 2 ;當耕層厚度15cm時,產量最低,平均產量為6 . 65t / hm ~ 2 ,此種土壤處于丘陵漫崗區,產量受水土流失影響較大。
  7. The result indicated that straw mulching could increase soil porosity by 2. 88 % - 5. 76 %, reduce soil bulk density by 1. 86 % - 3. 73 % and the content of soil water with straw mulching was higher than that with no straw mulching treatment ( ck1 ) at different growth stage, improve water - stable aggregate ; and increase soil organic matter, available n, available p, available k, improve soil perviousness and soil retention of water and fertilizer

    研究結果表明,與對照ck1 ,相比,秸稈覆蓋可使土壤總孔隙度增加2 . 88 % ~ 5 . 76 % ,土壤容重降低1 . 86 % ~ 3 . 73 % ,並且各生育期覆蓋處理的土城含水量均比對照高,並且秸稈覆蓋還田對促進土壤團粒結構形成具有較大作用,改善了土坡通透性和保水保肥性;同時秸稈覆蓋還田使土壤有機質、全氮、速效氮、速效磷、速效鉀得到明顯提高,從而培肥地力。
  8. Soil water not available for absorption by plants

    無效水植物不能吸取的土壤水
  9. 2. the results showed that the contents of cach - extractable soil p, and soil test phosphorus ( olsen, bray, mehlich - 3 ) and algae - available p contents ( naoh - extractable soil p ) in the soils correlated significantly with the contents of ortho - p, particulate p and bioavailable p in runoff, respectively, which were feasible to be used as primary indices to evaluate of agriculture p impacting on surface water quality. the results also showed that the relationships between the phosphorus sorption of soil index ( psi ), and the degree of soil saturation with phosphorus ( dpss ) and the contents of ortho - p, particulate p and bioavailable p in runoff reached significant level, respectively

    黃壤旱地土壤易解吸磷( cacl _ 2 - p ) 、土壤有效磷( olsen - p 、 bray - p 、 mehlich - 3 - p )或藻類可以利用的土壤磷( naoh - p )與地表徑流中顆粒態磷、生物有效性磷和磷酸根態磷之間均存在顯著的相關性,在一定的程度上可用cacl _ 2 - p 、 olsen - p作為指示黃壤旱地地表徑流中磷潛在流失的預警指標,來判斷旱地存在磷素非點源污染的可能性。
  10. Under the condition of different soil humidity and measuring time, a series of ecophysiological indexes, such as net photosynthetic rate, transpiration rate, stomatal conductance, the flow of water, atmospheric temperature, relative humidity, photosynthetic available radiation, and hydraulic conductivity are measured in order to find the factors which cause robinia xylem embolism

    摘要在不同的土壤水分含量和不同的測定時間條件下,對刺槐的一系列生理生態指標:凈光合速率、氣孔導度、蒸騰速率、水勢、大氣溫度、相對濕度、光合有效輻射以及導水率進行測定,探求刺槐木質部發生栓塞的影響因子。
  11. Our aim is to provide reference data for the mechanism of the effects of ree on crops and the safety evaluation of re used in agriculture. 1. in soil culture experiment, re applications with appropriate dose in dry condition increased the contents of soil available n, whose no - effect value were 505mg / kg at eighth week, whereas higher levels of re had negative effects, re applications with both appropriate and higher dose in inundated condition reduced the contents of soil nh / - n and hydrolysable n. re treatment concentrations showed significant positive correlation with the contents of soil exchangeable re. and significant negative correlation with the contents of soil available p and soil ph value. there was no significant effects of re on soil exchangeable cations, but applications of re increased the contents of soil water soluble cations, especially that of ca2 * and mg2 +

    兩種培養條件下,稀土處理濃度與土壤交換態稀土含量成正比,與有效磷含量、土壤ph成反比,對土壤交換態鹽基離子含量無顯著影響,但通過置換作用增加了水溶態離子,尤其是ca ~ ( 2 + ) 、 mg ~ ( 2 + )離子的含量;第二周稀土處理增加交換態zn含量,對交換態fe有降低作用,旱培條件下增加交換態mn含量,淹水條件下對其有降低作用;第八周稀土處理均提高交換態fe 、 mn 、 zn含量,其機制主要與稀土降低土壤ph有關。
  12. In the first step, quantitative and qualitative characteristic of soils influenced by soil microalgal were studied in this step. in this study, four different algal ( chroococcus, chlorococcum, navicula and chalmydomonas ) and one algal mixture, which were formed by the above four algal species, were cultivated in two different mediums ( soil and double distilled water ), under regular illumination or dark condition respectively. we estimated the environmental ph, the microorganism biomass ( not including algal ), and the organic matter content very 20 culture days and estimated the available phosphorus after 60 culture days. we got the results by making graphs and extreme - difference analysis after 0, 20

    實驗以土壤(經過高溫燒制除去微生物和土壤有機質的影響)和水(重蒸水)為兩種不同的基質,在基質中接種五種相同重量的土壤微藻藻液(立方色球藻、土生綠球藻、舟形藻、沙角衣藻以及由四種藻種形成的混合藻液) ,分別進行見光和和黑暗培養,在0天、 20天、 40天和60天時,測定環境ph值、微生物量(不包括藻類) 、有機質含量,進行極差分析和圖形比較。
  13. On the base of the palmer drought severity model of america and the modificated palmer drought severity model ( 1986 ), we further modificate the palmer drought severity model in the following aspects ; ? 4 stations were chosen to develope the model and adjust the weighting factor ; ? he potential evapotranspiration for an each month was computed by the penman - monteith equation commended by fao ; ( 3 ) the getting of available water capacity of the soil ( awc ) in each station was based on the data of awc that we can find and the characteristic of soil in each station

    在美國帕默爾旱度模式和我國1985年修正的帕默爾旱度模式的基礎上,針對其中存在的問題,從建模選用較多站點、可能蒸散計算採用彭曼?蒙特斯公式和土壤田間有效持水量進一步準確劃分等三個方面進一步修正了帕默爾旱度模式。
  14. Finally, on the basis of available water supply analytical equilibrium analysis analyzed water and soil equilibrium about yeerqiang river of 2010 、 2020 years, incorporated plantation suitability scale distribution and quantity in support to establish exploitation scale for the future according to the principle which take the water to determine plantation in the end, produced safeguard mechanism to exploit rationally and utilize plantation resources in support

    最後,在葉爾羌河2010年、 2020年可供水量分析的基礎上進行了水土平衡分析,依據后備耕地適宜性等級分佈及數量,按以水定地的原則確定了葉爾羌河流域后備耕地在今後的開發規模。提出了合理開發利用后備耕地資源的保障措施。
  15. We must conserve our soil and water resourses to assure that these key natural elements are available to support productivity.

    我們必須保護水、土資源,以便確保關鍵的自然元素能有效地維持生產。
  16. The effects of forest fires on soil moisture content, separate coefficient, porosity, water - retaining capacity, organic matter, available n, available ca, fungi and fine root significantly varied between the years after burning. the effects of forest fires on soil separate coefficients, porosity, saturated water - retaining capacity, available mg, fine root significantly varied between the fire intensity

    火燒後年限對土壤含水率、分散系數、孔隙度、持水量、有機質、有效氮、有效鈣、真菌、細根系生物量的影響有顯著差異;火燒強度對上壤分散系數、孔隙度、飽和持水量、有效鎂、細根系生物量的影響有顯著差異。
  17. The results show that loss of hydraulic conductivity of robinia xylem embolism is different under the condition of different soil humidity and loss of hydraulic conductivity is related with net photosynthetic rate, transpiration rate, stomatal conductance, the flow of water, atmospheric temperature, relative humidity, photosynthetic available radiation, and hydraulic conductivity

    研究結果表明:木質部導水率損失在不同的土壤含水量以及不同的測定時間條件下是有顯著性差異的;刺槐的導水率損失與凈光合速率、氣孔導度、水勢、蒸騰速率、光合有效輻射、大氣溫度顯著相關。
  18. ( 3 ) the distributions of both regional soil moisture and available soil water are similar, high in the south and low in the north, and have a mosaic structure similar to the regional precipitation distribution. ( 4 ) the soil moisture of the original slope is influenced s

    ( 4 )提出「初始萎蔫濕度」的概念,並將其作為判別土壤干化發生的標準;以此為依據,計算並確定了中部黃土高原典型地區的土壤干化層發生分佈情況。
  19. It repeatedly became clear that comcat had a slight enhancing effect on seed germination but a significant effect on especially root growth in young seedlings of several test crops, subsequently leading to the establishment of strong seedlings that were better adapted to utilize the available soil water as well as nutrients

    從而更清楚地看到康開/碧護對種子發芽期有微弱提高作用,但對幾種作物的在種子的播種其的根生長具有很大作用,從而起到非常強育苗作用適應土壤水和營養物質。
  20. As the increase of water added, the level of no3 - n in soils was decreased, in comparison with fif, it is concluded that dif significantly decreased the leaching loss of urea - n from soil, and increased the available nitrogen in soil

    總之,與澆灌施肥相比,滴灌施肥顯著地減少了尿素態氮的淋溶損失,增加了土壤中有效態氮的含量。
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