Based on analyzing the generation mechanism and quality characteristics of reclaimed acid from benzol refining and comparing varies kinds of purification methods, the operation easily, the technical process simple extraction method is used to purify the reclaimed acid and the dosage of the extraction agent and extraction power are studied in detail.

對精苯再生酸的生成機(jī)理、質(zhì)量特性進(jìn)行了分析欧洲一级爆干，通過比較各種再生酸凈化方法的優(yōu)缺點，選用操作簡便、工藝簡單的再生酸凈化方法——萃取法對再生酸進(jìn)行處理試驗日韩无码黄色性交，并對萃取劑的用量、萃取能力等進(jìn)行了詳細(xì)的研究世界午夜A片免费观看com。

Taking the irrigation with reclaimed water of Dawukou Forest Park in Ningxia as an example, through the indoor test of one-dimensional dust columniation , the regular patten of pollutant shift in soil when irrigated with reclaimed water at different infiltration condition was studied.

摘要以寧夏回族自治區(qū)大武口市森林公園利用再生水灌溉為例h视频乱，通過室內(nèi)一維土柱試驗?zāi)M土壤的入滲過程，研究了不同灌溉入滲條件下污染物在土壤中的運移規(guī)律超碰地址，結(jié)果表明：土壤的吸附作用是影響該地區(qū)土壤污染物遷移的主要因素少妇卖身全黄毛片。

Taking the irrigation with reclaimed water of Dawukou Forest Park in Ningxia as an example,through the indoor test of one-dimensional dust columniation,the regular patten of pollutant shift in soil when irrigated with reclaimed water at different infiltration condition was studied.

以寧夏回族自治區(qū)大武口市森林公園利用再生水灌溉為例，通過室內(nèi)一維土柱試驗?zāi)M土壤的入滲過程欧美A特级人成视频，研究了不同灌溉入滲條件下污染物在土壤中的運移規(guī)律国产午夜福利游戏视频在线播放，結(jié)果表明：土壤的吸附作用是影響該地區(qū)土壤污染物遷移的主要因素。

When used in reclaimed sand,this binder has many drawbacks,such as low strength,high viscosity and so on,which hindered greatly its application and development in the reclaimed sand.

用于再生舊砂欧美综合自拍亚洲综合第一页，這種粘結(jié)劑存在強(qiáng)度低精品人妻系列无码人妻男男、粘度大等缺陷，嚴(yán)重制約了它在再生舊砂中的應(yīng)用男人天堂的黄色网站。

The research result showed that(1) The reclaimed water used didn't influence the sensory quality of a given turf grass tested;under irrigation of reclaimed water,Festuca arundinacea are the best,followed by Buchloe dactyloides and Zoysia japonica;(2) The influence of different types of irrigation water on growth characters of turfgrass is species-dependence;(3) Irrigation by reclaimed water and fresh+reclaimed water increases Na~+,CEC,and total porosity of the turf soil in comparison to fresh water,and improves soil quality.

結(jié)果表明：本研究使用的再生水對所供測試綠化草種的顏色国产呦系列网站在线观看、覆蓋度、質(zhì)地和均勻性無不良影響中国在线无码视频，再生水灌溉條件下操逼午夜视频，高羊茅表現(xiàn)出了最強(qiáng)的綜合耐污能力，其次是結(jié)縷草和野牛草人与动人物杂交欧美在线播放。灌溉水類型對于草坪草的生長指標(biāo)的影響具有種的特異性自拍偷拍第2页。再生水灌溉和&清水+再生水&交替灌溉提高了土壤的陽離子交換量和總孔隙度，有利于土壤物理性狀的改善www.影音资源.com。

As the shortage of water resource is seriously,reclaimed water has been used on turf as substitute of fresh water.3 types of water(fresh water,fresh+reclaimed water,and reclaimed water)were used to irrigate 5 common turfgrasses(Poa pratensis,Festuca arundinacea,Zoysia japonica,Buchloe dactyloides,Radix liriopes) during 2003-2005;the growth characters and sensory quality of turf grasses and soil responses were investigated.

隨著城市綠地與人爭水的問題日益突出免费在线色，再生水作為替代水資源在草坪草上的應(yīng)用日益廣泛。本試驗于2003-2005年用3種類型灌溉水(清水观看免费黄色网站免费、&清水+再生水&久久精品国产99久久、再生水)處理5種草坪草(草地早熟禾、高羊茅www被啪啪舒服了、結(jié)縷草可以直接免费观看的黄色网站、野牛草和山麥冬)一级大黄片电影，從觀賞品質(zhì)和生長指標(biāo)方面進(jìn)行耐污性評價，并分析再生水對土壤的影響人人人操人人爱。

The total seed storage in topsoil (0-10 cm) was 83499-109141 indm^(-2) for natural wetlands and 9140-47452 indm^(-2) for reclaimed paddy fields. In natural wetlands, the seeds were of 16-30 grass plant species, being dominant with Polygonaceae and Cyperaceae or Cyperaceae and Gramineae; while in reclaimed paddy fields, the seeds were of 7-16 grass plant species, with the dominant of Gramineae. The seed storage and species numbers were greater in Shengjin Lake than in Shibasuo Lake. Higher seed bank storage and more species were observed in the paddy fields from Shibasuo wetland with 30 years of cultivation than from the Shengjin Lake wetland with over 50 years of cultivation.

結(jié)果表明：天然濕地種子庫密度為83499~109141粒m^(-2)欧美淫人，而開墾為稻田30~50年后種子庫密度為9140~47452粒m^(-2)；天然濕地的土壤種子庫物種數(shù)為16~30種不卡日本黄色三级片，以蓼科－莎草科或莎草科－蓼科為優(yōu)勢種午夜日韩，開墾為稻田后物種數(shù)下降為7~16種，且趨向于以禾本科為單一優(yōu)勢種干操逼网站；此外大屌干屄视频，與十八索濕地相比，升金湖濕地有較高的土壤種子庫物種數(shù)久久亚洲国产精、豐富度和多樣性亚洲视频在线播放路线一，而開墾年限為30年的十八索稻田土壤種子庫物種數(shù)和豐富度顯著高于開墾年限為50年的升金湖稻田。

With the deflected succession of aquatic ecotype plant functional group,the dominance of mesophytes and xerophytes increased,while the dominance of aquatic and hygric plants decreased. However,there are only planting crops in the reclaimed wetland. In the composition of plant biotype functional group,the hydrophytes reduced quickly with the deflected succession and the dominance of perennial herbs is mostly marked,and there are only annual herbs in reclaimed wetland. Compared with primary swamp,the species diversity index of meadow is the highest,the swampy meadow follows,and the reclaimed wetland is the lowest.

植物的水分生態(tài)型功能群組成隨濕地的逆行演替国内大量揄拍在线视频，水生国产一级婬乱片A片片片、濕生類植物功能群的優(yōu)勢度不斷減少，中生欧美人人操人人爽人人摸、旱生類植物功能群的優(yōu)勢度逐步增加久草国产在线视频，而在墾后濕地只有農(nóng)作物；植物生活型功能群組成隨濕地的逆行演替色区在线，水生草本迅速減少男士免费黄网，陸生多年生草本增加占據(jù)優(yōu)勢，而在墾后濕地均為一年生草本91国在线播放；濕地植物物種豐富度老司机欧美一级在线视频、多樣性指數(shù)由原生沼澤、沼澤化草甸到草甸依次增加性欧美牲交╳XXⅩ╳视频，草甸為最大值一级a黄色视频在线99，而墾后濕地則最低。

Extensive soil sampling of the crop-reclaimed Mn mine wastelands was conducted in the six typical manganese minelands (Bayi, Lipu, Pingle, Quanzhou, Bansu and Xialei) in Guangxi, China. In the six reclaimed minesoils, the heavy metal concentrations were Pb 41.63~348.31 mgkg^(-1), Cr 48.12~287.29 mgkg^(-1), Zn 47.38~269.92 mgkg^(-1), Cu 12.71~138.03 mgkg^(-1), Cd 0.73~46.50 mgkg^(-1), and Mn 676.7~41996.4 mgkg^(-1) respectively.

對廣西八一AV第页几久、荔浦中国美女一级婬片A片免费播放、平樂、全州久久99久久2、板蘇和下雷6個錳礦食用農(nóng)作物恢復(fù)區(qū)土壤重金屬進(jìn)行含量測定3d无码h，結(jié)果表明，土壤各元素含量為：Pb 41.63~348.31 mgkg^(-1)免费一级A片毛毛片在线播放i、Cr 48.12~287.29 mgkg^(-1)免费AⅤ网址在线播放、Zn 47.38~269.92 mgkg^(-1)、Cu 12.71~138.03 mgkg^(-1)、Cd 0.73~46.50 mgkg^(-1)久久精品无码一级毛片88AV、Mn 676.7~41996.4 mgkg^(-1)午夜福利在线观看网站。

The order spatial variation of soil surface compaction was in the land reclaimed five years(68.40%), next was unsubsided land(52.58%) and the lowest was the land being reclaimed(22.01%); in terms of the variation, the soil compaction is higher and the variation is lower to each soil layer of being reclaimed land, and the compaction of the first three layer is lower but the variation is higher to other redamed land, to the fourth layer(22.86～30.48 cm) is higher and variation is lower, and the compaction under the forth layer is nearly stable.

表層土壤壓實度空間變異最大的是復(fù)墾5 a的土地（變異系數(shù)為68.40%），其次是未塌陷土地（52.58%）人人玩人人操人人摸，最小的是正在復(fù)墾的土地（22.01%）黄色视频在线不卡免费观看。從各層的變異情況看，正在復(fù)墾的土地各個層次土壤壓實度都較大且變異系數(shù)較低呻吟av影院，其他復(fù)墾年限土壤壓實度上面3層較小但變異大九色最新地址，至第4層（22.86～30.48 cm）達(dá)到較高值，且變異較小污黄色视频，之下壓實度基本穩(wěn)定欧美在线免。