肥力土 的英文怎麼說
中文拼音 [bǐlìtǔ]
肥力土
英文
fertile soil-
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。The black earth is a kind of alfisol, with a thick layer of humus, loose texture, high fertility, high porosity ratio, poor permeability and a high content of clay, which is suitable for cultivation
摘要黑土是一種腐殖質層厚,質地鬆散,肥力很高,孔隙比較大而透水性差,粘粒含量高,適于耕作的淋溶土。With the development of human society, because of the lack of sustainable utilization consciousness, and the eager for quick success and instant benefit, the black earth suffered excessive cultivation and management, causing the reduction of its recycled ability, decrease in organic content, porosity ratio, fertility dropped and the properties of water retaining and water retention, which make the black soil harden and degenerate seriously
但是隨著人類社會的發展,在缺乏保護和可持續利用意識、急功近利思想影響下,黑土遭到過度墾殖和掠奪式經營,人類對其活動范圍遠遠超過了其再生能力,導致有機質含量減少,肥力下降,孔隙比減小,保水持水能力降低,土壤板結,黑土嚴重退化。The plant communities were surveyed, and the microclimates were observed, and the soil fertilities were determined in jinyun mountain in a series of fragmental evergreen broadleaved forests with different size and slope aspect, in comp " is n with continuous evergreen broadleaved forest
本實驗以不同大小、處于不同坡向的典型片斷化常綠闊葉林為對象,並以連續常綠闊葉林作對照,在縉雲山進行了植物群落調查、群落小氣候觀測以及樣地土壤肥力的測定。The results are summarized below : 1 ) study on soil science indicates that soil granular structure is the focus adjuster for soil fertility and it affects the space, water - grasp, aeration and anti - erosion of soil. and the percentage of aggregate is one of the key index that decides the speed and extent of soil erosion, hardening and degeneration because the soil degeneration will first lead to the disappearance of crumb - structure. so it is very important that the physical course and character of soil in different land use pattern are realized
現將主要結果摘要如下: l 、士壤學研究表明,團粒結構是土壤肥力的中心調節器,影響著土壤的空隙性、持水性、通透性和抗蝕性;任何土壤的退化首先將表現出團粒結構的消失;團聚體百分比是決定土壤侵蝕、板結等物理過程速度和幅度的關鍵指標之一,了解不同土地利用和土壤管理方式的物理過程和性質相當重要。In order to solve this problem, we find a kind of herbages plant - sabaigrass ( eulaliopsis binata ) which not only can accommodate the badly environment of purple soil but also have excellent water and soil conservation effect and good economic benefit. this study adopt quantitative and qualitative methods, through comparative study of four different utilization types : sabaigrass treatment, grass tree solid plating treatment ( planting sabaigrass under fruit trees treatment ), bare land treatment, natural wild grassland treatment, study water and soil conservation effect, soil water condition, soil constructors condition, soil fertility condition and soil surface temperature, then evaluated the water and soil conservation effect of plating sabaigrass in purple soil bare sloping field and probed into water and soil conservation mechanism. the main results are as follows : 1
本研究針對湖南省衡邵盆地紫色巖地區日益惡劣的生態環境,從紫色土荒坡地水土流失治理入手,在尋求出既適應紫色土荒坡地惡劣環境又有良好水土保持作用和一定經濟效應的作物? ?龍須草的基礎上,用定性和定量相結合的方法,以「龍須草純種」 、 「龍須草與果樹立體種植」 (簡稱林草立體種植,下同) 、 「空曠地」 、 「自然野生雜草地」四種不同的土地利用方式進行對比研究,從水土保持效應、土壤水文狀況、土壤結構、土壤肥力狀況、地表溫度狀況等方面分析、評價紫色土荒坡地種植龍須草防治水土流失的效應,並對其機理進行了初步探討,主要研究結果如下: 1When cultivated and stripped of their dense vegetative cover, soils of the humid tropics quickly lose their fertility.
當將厚密的植被除去並耕種時,潮濕熱帶地區的土壤就會迅速失去其肥力。Wheat - maize interplanting of both crops ' high yield features shorter cycling period, higher multiple cropping index, stronger fertility exhaustion and no time for soil fertility to recover
小麥-玉米套種兩作產量皆高是以周期短、復種指數高、肥力耗竭強為特徵,土壤肥力沒有時間得以復原。Other factors that were found to have positive effects on soil nutrients include the multiple cropping index and the practice of plowing stalks back into the land. these findings lead to several policy recommendations. first, it shows that economic variables are very important in determining changes in soil fertility, and therefore the theory and method of economics should be taken seriously by soil scientists
然後,根據理論預期以及單因素分析結果,我們建立了土壤肥力變化的社會經濟及政策影響因素模型,分別採取差分和固定效應兩種具體模型形式,對各種可能的社會經濟及政策因素對土壤肥力變化影響的方向和程度做了定量估計。Then, with the help of gis, i selected 8 soil fertility factors mentioned above and soil texture as parameters, used blocks generated by overlaying each factor theme as assessing unit, modified nemoro fomular, and then i assessed the overall soil fertility quality of wujin city, we know : the soil fertility quality of the city is generally medium or worse, in it, the district of riverine polder the district of menghe even fields the district of taige even fields and the district of hilly lands are on " worse " level, and the district of zhengheng polder the district of lakeside polder and the district of taoge even fields are on " medium " or " better " level
接著在gis支持下,選取以上8項土壤肥力要素並加上土壤質地作為參數,以各要素圖層疊加產生的圖斑作為評價單元,修改內梅羅公式,對武進市土壤肥力質量進行綜合評價,得出:土壤肥力質量中等偏下,其中,沿江圩田區、孟河平田區、太涌平田區和低山丘陵區主要處于「較差」水平,而鄭橫圩田區、沿湖圩田區、洮?平田區主要處于「中等」及「良」水平。Profile differentiation of soil nutrients and fertility potential of purplish soils
紫色土肥力要素的剖面分異與肥力潛力Fertilizer application for planted cane - organic inorganic fish - meal fertilizer ' s effect on ratoon cane quality and the change of soil fertility
無機復混肥對宿根蔗產量品質和土壤肥力變化的影響Purple soil classified as regosols in fao soil taxonomy and pup - cambols in china soil taxonomy, is one of well known soil types with the particularities such as weathering easily, high natural fertility, etc., and feeding population of 500 / km2. however, it often meets the water disasters ( sporadic flooding and serious seasonal drought )
摘要紫色土是世界上一種特殊的土類,集中分佈於四川盆地,以其易成土性和富鹽基性(自然肥力高)養育著500人以上平方公里的人口而著稱於世,但是它分佈的區域存在嚴重的季節性乾旱和時有發生的洪災等水問題。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Subalpine is the coumtry of cold - warm conifer forest which bistributing the midst of the elevation between 2200m to 4200m
其中的微生物及與微生物和土壤肥力密切相關的土壤酶活性必然有其獨特性。Obviously, natural soil fertility conditions affect the yield potential but in general, well drained soils with medium to high fertility have the potential to produce high yields
顯然,自然土壤肥力狀況影響產量潛勢,排水良好的中上等肥力土壤最能獲得高產。The phosphorus activation coefficient ( pac ) was generally lower in different soil layers and at different fertility levels in calcareous soils
石灰性土壤中磷素活化系數pac在不同肥力土壤和不同土層中普遍較低。Effect of plant density and fertilizer application on plantain yield in two soils from colombia with different natural fertility is shown ( table 2 )
表2說明了在哥倫比亞的兩種不同天然肥力土壤上種植密度及肥料用量對大蕉產量的影響。There were significant differences among the amounts of soil p and its fractions of inorganic p ( pi ) and organic p ( po ) at three fertility levels
不同肥力土壤中磷素含量及其無機和有機組分有顯著差異。隨著土壤肥力由低到高,土壤中總磷量呈上升趨勢。The variation of pi was little in the soils with three fertilities. and the proportion of pi in total p decreased while the proportion of po went up with the increase of soil fertility
不同肥力土壤無機磷量差異較小,隨土壤肥力提高,無機磷佔全磷比例下降,但有機磷量及其佔全磷的比例顯著增加。分享友人