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1)  cover soil type
覆土土质
1.
Effects of leachate irrigation and cover soil type on N_2O emission from municipal solid waste landfill;
垃圾填埋场渗滤液灌溉及覆土土质对填埋场氧化亚氮释放的影响
2)  soil cover
覆土
1.
The results showed that N_2O emission from sanitary landfill decreased dramatically with increasing MSW landfill age after soil cover and its average value,18.
研究发现:卫生填埋场覆土后N2O释放通量(以N2O-N计)随垃圾填埋龄的增加而大幅降低,其均值(18。
2.
The results show that:all bacteria population and biochemical activity,genus of actinomyces and fungi,and soil nutrients on covered area with soil were better than those on coal gangue hills without soil cover.
通过对矿区煤矸石风化物上几种不同复垦措施的复垦区 ,进行一系列土壤微生物及其生化特性的分析研究 ,结果表明 :各类微生物菌群、数量以及生物活性强度、放线菌和真菌的优势种属、土壤养分等均以覆土种植区大于不覆土区 ,豆科区大于禾本科区 ;而覆土厚度 ( 1 0~ 2 0 cm范围 )对土壤养分、生理群微生物及其活性等影响较小。
3)  casing soil
覆土
1.
Physical and chemical properties of three industrial or agricultural wastes and their influence on growth of the mushroom(Agaricus bisporus) as casing soil;
三种工农业废料的理化性状及作为蘑菇覆土材料的研究
2.
Physical and chemical properties,culturable bacterial population and phospholipid fatty acid(PLFA)profile of different casing soils at different mushroom(Agaricus bisporus)cropping stages were investigated.
在双孢蘑菇(Agaricus bisporus)栽培中,以传统蘑菇砻糠田泥覆土为对照,研究了不同泥炭比例覆土配方的理化性状、细菌生长量、双孢蘑菇菌丝生物量及其产量。
3.
appraised and analysized the productive properties of three kinds of Agaricus bisporus by its cultivated property,yield and nutritional components of fruitbodies,analysized the effects of the XSJ fermentation on the cultivated property and yield in Agaricus bisporus ,and studied the pattern of casing soil using Fus.
试验以玉米秸秆为原料,对双孢蘑菇的栽培技术进行了研究,首先获得了玉米秸秆培养料的高产配方;经对菌丝生长特性、菇体产量及其营养成分的测定,对3个双孢蘑菇菌株的生产性能作了评价分析;分析了酵素菌发酵对双孢蘑菇生育的影响;并且运用正交设计Fuzzy分析法进行了覆土模式的研究;在此基础上,对双孢蘑菇各生育期间的营养利用规律及胞外酶活性变化规律进行了初步研究。
4)  covering soil
覆土
1.
Experimental study on anti-impact properties of a partially prestressed concrete beam with covering soil;
带覆土预应力混凝土梁抗冲击试验
2.
The mesh spot pattern is used for sampling covering soil at ecological environment recovering test field, which is reclamation area filled by coal mining wastes for cropland in the north of Jingtian coal mine, Laohutai, Fushun.
利用网格布点取样法采集抚顺矿区老虎台井田煤矿北部矸石回填复垦还田生态重建试验区不同覆土类型、不同土壤深度、不同覆土年龄的土壤样品 ,对矿山复垦土壤的重金属元素的时空变化进行了研究。
5)  Casing [英]['keɪsɪŋ]  [美]['kesɪŋ]
覆土
1.
Casing at the period when hyphae occupied 90% of cultural medium could produce the highest yield,it was 16 42% and 26 35% higher than other two treatments (oc.
对蘑菇覆土层不同厚度、菌丝不同生长期覆土及覆土时不同调水方法进行试验研究 ,结果覆土层厚 3。
6)  soil covering
覆土
1.
Studies on cold resistance of grape varieties rootstocks and soil coverings in North Shaanxi;
陕北葡萄品种、砧木与覆土间抗寒性的研究
补充资料:多种土质坝
      采用两种以上筑坝材料筑成的土坝。坝体包括防渗料和各种透水料。防渗料置于坝体中间或上游,再按排水过渡原则分别设置由中间向上下游,或由上游向下游透水性逐渐增大的坝壳透水料(见图)。这种坝适用于当地具备几种筑坝材料(包括从建筑物开挖出来的石碴),且必须用两种以上材料才能满足数量要求的情况。
  
  这种坝的优点:①可因地制宜充分利用包括石碴在内的当地各种筑坝材料;②土料用量比均质土坝少,因而施工受气候影响也相对小;③如防渗体设于上游,雨天可先填下游透水料争取工期;④坝内自防渗料起按由细到粗的排列过渡原则分区配置筑坝材料,有利于坝体排水,简化排水设施,使下游透水坝壳浸润线较低。如防渗体位于中间,当库水下降,上游透水坝壳的孔隙水迅速外排,上游坝坡可设计得比较陡。如防渗体位于上游,下游坝壳全为透水料,下游坝坡比较陡。综上所述,这种坝型比均质土坝节省工程量。其缺点是坝体由多种材料组成,工序复杂,施工干扰大。
  

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