- 土壤肥力因子
- soil: vt. (給畜舍內(nèi)畜牲)喂青草[青飼料]；(用青飼料給畜 ...
- fertility: n. (opp. sterility) 1.肥沃，豐饒； ...
- factor: n. 1.〔英國(guó)〕經(jīng)銷人；(代客買賣收取傭金的)經(jīng)紀(jì)人； ...
- fertility of soil: 肥力
- soil fertility: 土壤肥力
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soil fertility factor中文什么意思
- 土壤肥力因子
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例句與用法
- Every soil fertility factor was recorded both in the early 1980s and 2000 at the same sample plot . all socio - economic data were derived from interviews with the production team leaders in charge of the sample plots , and were also gathered in both periods . after describing the trends in changes in soil nutrients from the early 1980s to 2000 , the dissertation sets up an econometric model to measure the possible impact of socio - economic factors on soil fertility
本研究樣本數(shù)據(jù)的特點(diǎn)之一是每個(gè)樣本地塊都有80年代初和2000年兩個(gè)時(shí)期的4個(gè)土壤肥力因子的觀測(cè)值，同時(shí)兩個(gè)時(shí)期的土壤采樣季節(jié)、技術(shù)以及實(shí)驗(yàn)分析方法等基本相似，這保證了土壤肥力數(shù)據(jù)具有完全的可比性。 - Based on the principle of significant effect of soil fertility factors on forest growth , soil physical factors ( natural water content , bulk density , total porosity , capillary porosity , aggregate degree , coarse silt and physical clay ) , chemical factors ( om . total n , alkali - hytrolyzable n , total p , humus and ha / fa ) and biological factors ( urease , acidphosphotase , invertase and microbes ) were selected as evaluation index system of soil fertility . applying principal component analysis , soil ifi of subalpine coniferous forest was calculated
從土壤物理、化學(xué)、生物學(xué)三方面出發(fā)，建立了川西亞高山針葉林不同演替階段土壤肥力評(píng)價(jià)指標(biāo)體系，應(yīng)用主成分分析，計(jì)算出不同演替階段土壤肥力綜合指標(biāo)值( ifi ) ，各演替階段大小順序?yàn)椋?10年生云杉林地跡地原始林地次生樺木林地30年生云杉林地20年生云杉林地50年生云杉林地60年生云杉林地40年生云杉林地。 - This article , with the help of gis , first uses geostatistics to study temporal and spatial changing of soil fertility factors , such as oganic matter total n total p , total k available k available p ph and cec , in wujin city in nearly 20 years , and draws these conclusions : soil acidification of large area exists in the city , the content of n is generally lower but it tends to rise , the content of p and k is lower and it ' s still lowering , the content of organic matter is medium but it tends to add , cec ' s quality grade is higher but its content is lowering
土壤肥力質(zhì)量時(shí)空演變對(duì)于農(nóng)業(yè)生態(tài)與社會(huì)、經(jīng)濟(jì)的持續(xù)發(fā)展意義重大，而gis在土壤肥力質(zhì)量評(píng)判中發(fā)揮日益重要的作用。本文首先基于gis支持下，運(yùn)用地統(tǒng)計(jì)學(xué)，研究了武進(jìn)市近20年全n 、全p 、全k 、有效p 、有效k 、 ph 、 cec和有機(jī)質(zhì)等土壤肥力要素的時(shí)空分異狀況，得出：存在大面積土壤酸化現(xiàn)象、 n素含量總體較差但趨于提高、 p素和k素含量較低且繼續(xù)降低、有機(jī)質(zhì)含量中等但有增加趨勢(shì)、 cec質(zhì)量等級(jí)較高但含量趨下降。 - 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(xiàng)土壤肥力要素并加上土壤質(zhì)地作為參數(shù)，以各要素圖層疊加產(chǎn)生的圖斑作為評(píng)價(jià)單元，修改內(nèi)梅羅公式，對(duì)武進(jìn)市土壤肥力質(zhì)量進(jìn)行綜合評(píng)價(jià)，得出：土壤肥力質(zhì)量中等偏下，其中，沿江圩田區(qū)、孟河平田區(qū)、太涌平田區(qū)和低山丘陵區(qū)主要處于“較差”水平，而鄭橫圩田區(qū)、沿湖圩田區(qū)、洮?平田區(qū)主要處于“中等”及“良”水平。 - Using the methods of summation by giving a mark and main component analysis , the result indicates that the methods of main component analysis is identical better with reality than the methods of summation by giving a mark , the differentiation trend of types of site conditions of cornus officinalis chiefly receives the accuse in soil fertility factor and the general configuration of the earth ' s surface factor
結(jié)果表明：主分量分析法與打分求和法相比，以主分量分析法劃分的類型與實(shí)際吻合更好；山茱萸立地條件類型的分化趨勢(shì)主要受控于土壤肥力因子和地貌因子。