The soil had great population of bacteria, but the fungi quantity is excessive which may cause the multiplication of germina. As base-fertilizer, the slowed-release fatty had positive influence on soil fast-effect nutrient, but the organism quality is small, the soil enzyme activity with microorganism activity both low. Soil EC, total nitrogen, available nitrogen, available phosphorus and organic matters were significantly negative related to the soil pH. Soil total nitrogen was positive significantly related to soil available nutrient.

土壤中pH值與土壤EC值综合人成精品玖玖玖在线、土壤全氮国产69a片免费看、速效氮日本在线免费不卡视频、速效磷黄色动图视频、有機質(zhì)含量呈顯著負(fù)相關(guān)毛片入口大全，土壤全氮含量與土壤速效養(yǎng)分含量有極顯著正相關(guān)關(guān)系大陆老熟女乱人伦视频，而且土壤有機質(zhì)含量與土壤速效養(yǎng)分之間也有相互促進(jìn)的作用，所以土壤養(yǎng)分的平衡效果非常重要欧美激情亚洲，有機肥處理后土壤養(yǎng)分全面A片二区图，肥力較高。

The paper has a further research on the influence of compound soil nailing behavior in the perspective and the axial strength of the soil nails of the effect of the stiffness of soil, the stiffness of soil-cement mixing piles, the width of soil-cement mixing piles, the length of nails, the angle of nails. The paper also has a research on the influence of compound soil nailing behavior in the perspective of silt and hardpan of the effect of the width of soil-cement mixing piles.

深入分析了土體的彈性模量自拍偷拍29p，水泥攪拌樁的彈性模量4438ⅹ亚洲全国最大色丁香，水泥攪拌樁擋墻的寬度，土釘長度的變化以及土釘傾角的變化對復(fù)合型土釘墻變形性狀和土釘軸力的影響一区二区三区不卡高清视频，以及水泥攪拌樁擋墻的寬度在淤泥土層以及砂土土層中對復(fù)合型土釘墻支護(hù)變形性狀的影響www。色色色色。

Soil carbon,soil total N,and pH belonged to high and soil total P belonged to medium degree spatial correlation at 60m lag intervals,respectively.However,there were significant differences in ranges of spatial autocorrelation among four soil properties,among which the effective range of soil organic carbon was the highest(261m),followed with soil total N(208m),pH(156m),and soil total P(133m).

在60m步長間隔尺度下，土壤有機碳91看黄片、全氮和pH有強烈的空間相關(guān)性久码一区二区，土壤全磷空間相關(guān)性為中等程度。4種土壤養(yǎng)分的空間自相關(guān)范圍具有明顯的差異国产爱福利，有機碳的有效變程最大(為261m)久草久草，全氮(208m)和pH(156m)次之，全磷的有效變程最小(133m)国产在线A级视频。

As the representative of the northern Loess Plateau gully region, the soil quality under different cultivation length of the orchard in Changwu county was studied. Using partial correlation coefficient to determine the weight, combined with evaluation of membership Sanction to evaluate soil quality levels of the area, the trend of orchard soil quality under different cultivation years was analyzed. The results showed that the IFI values of orchard soil were between 0.22 and 0.70, 27% of them reached the second soil quality standards, 64% reached a third-level soil quality standards, 9% met the fourth standards of soil quality.

以長武北部黃土高原溝壑區(qū)為代表免费在线看一级片，研究了不同果園種植年限下的土壤質(zhì)量現(xiàn)狀，運用偏相關(guān)系數(shù)法確定權(quán)重欧美18性欧美在线，結(jié)合隸屬度函數(shù)評價了該地區(qū)土壤的綜合肥力水平男女性爱网站视频，分析果樹種植中土壤質(zhì)量隨著種植年限的變化趨勢，結(jié)果表明：黃土溝壑區(qū)果園土壤IFI值在0.22~0.70亚洲中文久久精品无码性色av，其中有27%達(dá)到了2級土壤質(zhì)量標(biāo)準(zhǔn)欧美黄色视频涩,爱，64%達(dá)到了3級土壤質(zhì)量標(biāo)準(zhǔn)，9%達(dá)到了4級土壤質(zhì)量標(biāo)準(zhǔn)一站式A片。

From analysis it could be seen that intercropping aromatic plants in sand soil in pear orchard had good regulatory effects on the soil microbial quantity, the ratio of the soil fungi, bacteria and actinomyees in soil microbial community and the soil available nutrients, among which, intercropping Ocimum basilicum L on the soil microbial quantity and content of the soil nutrients was better than other treatments.

間作芳香植物對于沙地梨園土壤微生物數(shù)量及其群落中真菌、細(xì)菌和放線菌的比例與土壤中有效態(tài)養(yǎng)分含量具有良好的調(diào)節(jié)作用日韩口爆自拍视频在线观看，其中檸檬羅勒對提高梨園土壤微生物數(shù)量色呦呦在线观看色一区色二区、土壤養(yǎng)分含量的綜合效果最佳。

According to the result of artificial rainfall, the character and factors affectedby soil, rainfall, chemicals, slope length, slope gradient and field mangment practices, for rainfall, runoff,infiltration, soil erosion and soil chemicals, such as NO_3~-, NH_4~+, PO_4~(3-), K~+ and Br~-, are investigated. Thedeterminate methods, influence factors and practical application of the mixing zone depth are also researched.The results can enrich the dynamics of soil, water and nutrient transport, evaluate the soil water and fertilizerefficiency, and theoretically benefit the research of agricultural NSP on loess hill slope. 1. According to the surface transport experiments of soil chemicals under the non-satuation soil and watererosion condiction, for adsorbed PO_4~(3-) and K~+, the time of sheet erosion and rill erosion initiation is coincidentthat of chemicals content in surface runoff climbs, and then their abundant export by surface runoff is urged.

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The mostly conclusion is as below: 1 The characteristic analysis of the expressway soil erosion: Expressway soil erosion is different from conventional soil erosion and other soil erosion of exploitation construction project for its 4 outstanding features, including imbalance of soil erosion distribution in time and space; Presenting either threadiness or pinnate distribution in space; The quantity of soil erosion is large;Erosion form is complicated and frequency of causality soil erosion occuring is large.

具體得出的主要結(jié)論如下： 1高速公路土壤侵蝕的特征分析公路建設(shè)土壤侵蝕區(qū)別于傳統(tǒng)的土壤侵蝕亚洲91精品成人网站，與其它開發(fā)建設(shè)項目中的土壤侵蝕也有所區(qū)別，有自己突出的特點亚洲国产小电影你懂的，主要表現(xiàn)為時間分布上不平衡黄色网站日韩在线观看；空間上呈線狀或羽狀分布；土壤侵蝕量大另娄69XXXXX；侵蝕類型復(fù)雜无码秒播成人网站免费，誘發(fā)性土壤侵蝕發(fā)生頻數(shù)大4個方面。

Because of the regional difference of soil and climatic conditions, the division of 4 stages of soil moisture circulation is not all the same between different areas; the soil moisture dynamics between different dry farming areas in the Yellow River Basin is contrasted in this report. The results indicate that soil moisture increases gradually from dry semi-arid area to semi-arid area, dry semi-humid area and semi-humid area, and the high value district generally appears during soil moisture resuming period in rainy season or soil melting period. While the low value district appears at the stage of fast evaporation in spring or slow evaporation in autumn; in views of vertical changes of soil moisture, it is showed that the variation range of upper lays is larger than that of lower among the different dry farming areas in the Yellow River Basin.

由于各區(qū)域之間土壤激情国产免费在看、氣候條件的差異性交小视频无码，各地土壤水分循環(huán)4個階段的劃分也不盡相同；黃河流域不同旱作類型區(qū)土壤水分動態(tài)變化比較結(jié)果表明：就季節(jié)變化而言(來源：A70b0B0bC論文網(wǎng)www.abclunwen.com)操妇女视频网站，由半干旱偏旱區(qū)→半干旱區(qū)→半濕潤偏旱區(qū)→半濕潤區(qū)土壤水分含量呈逐漸增加的變化趨勢国产骚妇视频在线观看，而且高值區(qū)一般出現(xiàn)在雨季恢復(fù)階段或春季土壤融凍返漿時期；而低值區(qū)均出現(xiàn)在春季大量蒸發(fā)階段或秋季緩慢蒸發(fā)階段好硬好大好爽18禁免费看网站；就垂直變化而言人人摸人人搞人人射，黃河流域不同旱作類型區(qū)土壤水分垂直變化的趨勢均表現(xiàn)為上層變化幅度較下層大。

The large-scale soil animal sorts were gathered by hand, while the medium and the small soil animals were separated by the funnel law and the funnel law, totally 314 soil animals were caught, which subordinated separately in the mollusk gate ,the annulate gate and 3 phyla 4 class 12 order results showed that the ball tail phyla and the hymenoptera prospect, tubing up 57.54% of the total phyla ,are the dominant class groups and main part of soil animals in this area; The hymenoptera ant class, the coleoptera larva, the arachnids, man kind of, the gastropoda is the common class group the hymenoptera are the common class groups .these result indicate that the community multiple of soil animal's degreases progressively basically among different soil strata sing soil depth and has an obvious aggregation .

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Uses method which the field investigation sample and the indoor analysis unify, 2007-2008 years live the unicast awnless brome lawn and the awnless brome and the alfalfa interlacing in the Inner Mongolian nationality university agriculture school test farm take 2 years mix broadcast the lawn and the colleague mix broadcast the lawn as the objects of study, have studied under the different sowing seeds way the forage grass to the soil physics and chemistry nature influence, finally indicated:the change tendency which under the different sowing seeds way increases the soil bulk specific gravity overall along with the soil layer depth to present after reduces first increases, is the 10-20cm soil layer is lowest; Looking from the 0-40cm soil layer's mean value, the unicast awnless brome lawn soil bulk specific gravity is smallest, the colleague mixes broadcasts the lawn soil bulk specific gravity to be biggest.

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