Results 11 to 20 of about 256 (146)
Review of techniques and case studies for saline-alkali land amelioration in the coastal regions of China [PDF]
Soil salinization is one of the major challenges in agricultural production and ecological development. With the rapid development of China’s coastal areas, land resources are becoming increasingly scarce, creating an urgent need for the improvement and ...
Hang LYU +5 more
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Evaluation of the Effectiveness of Soil Improvement Measures in Apple Orchards on the Loess Plateau: A Meta-Analysis [PDF]
[Objective] Soil acidification, structure and fertility degradation and poor water-holding capacities are common problems in the apple orchard on the Loess Plateau, effective soil improvement techniques are crucial for enhancing soil quality, and ...
DUAN Shunxia +3 more
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Shuitu Baochi Xuebao, 2020 施加化学改良剂是改良土壤和提高农田水分有效性的重要途径，深入了解化学改良剂对土壤水分运动过程的影响是合理利用化学方法改良土壤的基础。通过开展室内土柱试验研究表施聚丙烯酰胺（PAM）和羧甲基纤维素钠（CMC）2种化学改良剂，分析不同施量的化学改良剂（PAM和CMC）对土壤水分入渗和蒸发特征的影响。结果表明：随着PAM和CMC施加量的增加，不同化学改良剂均降低了土壤水分入渗过程，抑制了土面蒸发过程。综合考虑不同化学改良剂的保水、抑蒸性能，施加CMC的减渗、抑蒸作用高于施用PAM，且CMC施量为0.08 ...
哈丽代姆·居麦 +3 more
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Resource utilization status and development trend of bulk solid waste of coal-based ash/slag [PDF]
In recent years, the rapid development of the coal industry has provided important energy security and raw material support for the national economy. At the same time, coal-fired power plants, industrial, civil boilers and other equipment produce large ...
Bo LYU +4 more
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Shuitu Baochi Xuebao, 2023 为探究生物和化学方法联用对黄河三角洲地区盐碱土的改良效果,首先进行粉煤灰的改性和土著耐盐菌的筛选,选取其中2株耐盐菌(BY-4、BY-8)与化学复合改良剂(改性粉煤灰+脱硫石膏+腐殖酸(FSZ))通过联合配施的方法开展室内土柱淋溶试验,研究渗滤液和土壤中盐基阳离子、可溶性有机碳(DOC)、土壤钠吸附比(SAR)以及土壤有机质等的变化规律。结果表明:BY-4和BY-8除具有明显的耐盐和产吲哚乙酸能力,还分别具有较高的溶磷与解钾能力;与对照(CK)处理相比,添加化学复合改良剂(FSZ)能显著促进水溶性Na ...
王悦 +8 more
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Synthesis and Characterization of Porous Materials with SOD Topological Structure [PDF]
, 2016 具有特定拓扑结构的多孔材料是长期以来的研究热点。无机方钠石和有机-金属框架结构材料ZIF-8都是具有由SOD拓扑结构的多孔材料。由于ZIF-8的孔道结构比方钠石更加灵活，所以其应用范围更为广泛，在气体的吸附分离、有机物的催化降解方面都具有广阔前景。本论文研究了SOD骨架结构材料及其复合多孔材料的性质，解释了这两类多孔材料的合成机制，探究了不同因素对合成结果的影响，具体从以下三个方面展开： 1、本文以廉价高岭土为原料合成方钠石分子筛，通过不同的合成方法得到不同形貌、不同尺寸大小的方钠石分子筛 ...
曾雪
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Review of comprehensive utilization of typical ferroalloy slags [PDF]
, 2020 Three typical ferroalloy slags, namely, silicon–manganese, nickel–iron, and chrome–iron slags, are produced in large quantities as by-products. This is because they are not efficiently utilized, which creates lots of pressure on environmental capacity ...
Fang-qin CHENG +6 more
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Shuitu Baochi Xuebao, 2020 通过室内环刀试验，研究絮凝黄河泥沙复配生物炭对盐碱土水盐运移及水力特征参数的影响。将生物炭和絮凝黄河泥沙按4∶6质量比混合成土壤改良剂，再将复配后的土壤改良剂按0，1%，2%，3%，6%，10%混合到盐碱土中。结果表明：（1）随着土壤改良剂添加量的增加，土壤孔隙度及水分含量不断增大，10%添加量下的土壤孔隙度和水分含量较未添加改良剂的处理平均增加了12%；（2）土壤饱和导水率在3%的添加量下最大，较未添加处理增大68.9%；（3）土壤改良剂添加量越大水分扩散的越慢，土壤pH越大，降低盐分的效果越不明显 ...
李争争 +4 more
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Crop Morphogenesis and Solutions Under Heavy Metal Pollution [PDF]
, 2016 在重金属污染愈发严重的背景下,探索出保障污染地区的农业生产水平可持续发展的技术,是保障粮食生产安全亟需解决的重要问题.通过综述农作物对重金属胁迫的形态建成响应机制与实践中的农艺管理技术手段,总结在重金属污染区域提高粮食产量的主要方法.重金属影响下的作物形态建成具有深刻的遗传基础和复杂的生理机制,这就决定了作物对重金属的响应受到作物类型与重金属种类的影响.通过对作物形态建成的更深入研究,建立一套从品种选择到田间管理的应对措施,可以为农业安全生产提供持久有效的保障.In consideration of ...
严重玲 +4 more
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Research on soil improvement and engineering application under mixed application of environmental materials in alpine mining areas [PDF]
To address the issues of inadequate topsoil structure, soil erosion, and low soil fertility in the reclamation of alpine mining areas. Taking Qinghai West Copper Mine as an example, this study investigates the impact of three materials—sheep manure(A ...
Jie REN +4 more
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