Results 61 to 70 of about 1,079 (157)
Greenhouse Gas Mitigation and Yield Response to Biochar-Microbial Amendment in Saline-Alkali Soil [PDF]
[Objective] To investigate the effects of combined application of biochar and microbial fertilizer on greenhouse gas emissions and sunflower yield in saline-alkali soil under plastic film mulching and drip irrigation.
JI Wentao +6 more
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Advances in research on technologies for large-scale coal gangue utilization for green mine construction [PDF]
BackgroundThe coal gangue, a solid waste, features high production and a continuous increase in the amount piled in China. The long-term piling up of coal gangue will cause the waste of land resources and environmental pollution in mining areas.
Dawei XIE +4 more
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Shuitu Baochi Xuebao, 2006 对毛乌素沙地南缘半流动沙地、新垫土改良地和改良4年的麻黄地土壤理化性质的研究结果表明：垫土对沙地土壤有明显的改良作用，细粒物质增加，持水能力提高，0～20cm平均粒径由0．24～0．28mm降到0．14～0．18mm。土壤中有机质平均含量为0．107％、全氮为0．0113％，速效氮为11．522mg／kg，分别是半流动沙地的1．67．1．67，2．75倍。改良后通过4年种植的麻黄地土壤得到进一步发育，20～40cm层粉沙含量占到10．38％～18．38％，是新改良地的7．98～14．94倍 ...
王志, 彭茹燕, 王蕾, 刘连友
doaj
Shuitu Baochi Xuebao, 2008 本文采用间隔覆盖配施土壤改良剂方法,利用室内人工降雨实验与土柱实验研究该方法对土壤水分运动及分布的影响,进而为其实际应用奠定理论基础。结果表明:(1)间隔覆盖法可增加入渗区蓄水量,面积比为1:1时,土壤蓄水量可达到降雨量的1.83倍。配施土壤改良剂情况下,雨强I=60 mm/h,面积比1:1时,降雨入渗率可达到未施加改良剂处理的2.60倍。湿润锋分布较深,水分分布均匀程度也有所提高。(2)对土壤水分蒸发及吸持水能力的研究发现,在施加土壤改良剂条件下,水分蒸发受到抑制,而土壤吸持水能力增强 ...
潘英华, 雷廷武, 谷晓岩
doaj
Shuitu Baochi Xuebao, 2022 为揭示牧草种植改良盐碱地的效果,更好地开发利用后备土地资源。以黄河三角洲滨海盐碱地为研究对象,采用小区试验、野外取样、室内测试相结合的方法,研究了高丹草、甜高粱和墨西哥玉米3种一年生牧草在1个生长期内对黄河三角洲盐碱地土壤物理、化学和酶活性改良效果的动态变化,并依据土壤质量指数综合评价了改良效果。结果表明:(1)土壤含水量、pH和电导率随生长时间增加呈下降趋势,高丹草和墨西哥玉米在生长旺盛期对土壤pH的降低效果最明显,甜高粱在收获期降低pH的效果最好。3种牧草土壤电导率较CK均显著降低,对20—40 ...
窦晓慧 +7 more
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Effect of AMF inoculation on root distribution and water use efficiency of Amorpha fruticosa L in western coal mining area [PDF]
Coal mining in arid and semi-arid areas has led to the emergence of large areas of coal mining subsiding areas. The ecological reclamation of mining areas is hard, and the mycorrhizal microbial technology for ecological restoration has become a current ...
Chao WU +4 more
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Shuitu Baochi Xuebao, 2005 通过室内培养及玉米盆栽土培模拟试验,采用完全随机区组设计,研究了在山西省大同市山阴县西盐池的苏打碱土上,施用DS-1997、脱硫石膏、风化煤对土壤速效磷含量的影响。研究结果表明:(1)3种改良剂均可降低苏打碱土的pH值;(2)脱硫石膏改良苏打碱土的作用最明显地反映于土壤水溶性盐分的急剧上升,同时伴随着土壤中速效磷含量的急剧下降,因此,脱硫石膏抑制土壤中磷的有效化作用;(3)DS-1997与其他两种改良剂相比,可以更好地增强土壤解磷细菌和碱性磷酸酶活性,增强土壤中磷的释放作用。
李晓娜 张强 陈明昌 章衡
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Shuitu Baochi Xuebao, 2022 为比较不同小龙虾壳基土壤改良剂对砷、铅复合污染土壤的修复效果, 通过盆栽试验, 探究施用1%(w/w)小龙虾壳粉(CSP)、甲壳素(CT)、小龙虾壳炭(CSB)及甲壳素-小龙虾壳炭配施(CT-CSB, CT∶CSB为1∶1)对土壤养分、酶活性、重金属生物有效性及青菜生长的影响。结果表明, 不同改良剂施用均可显著提高土壤pH和阳离子交换量, 降低土壤中有效态铅的含量, 施用CSB对降低土壤中有效态铅含量的效果最显著, 较对照降低了35.3%;添加CT、CSB和CT-CSB均可降低土壤中有效态砷的含量 ...
杨冰霜 +5 more
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[Determination of 15 carbonyl compounds in soil using improved solid phase extraction-high performance liquid chromatography]. [PDF]
Se Pu, 2023 Xue KP +7 more
europepmc +1 more source
Removal Impurity and Whitening of Phosphogypsum via Calcination and Acid Leaching [PDF]
This is an article in the field of metallurgical engineering. Large production and storage capacity of phosphogypsum has become an important factor restricting the green and healthy development of phosphorus chemical industry.
Jiaxin TIAN +4 more
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