Results 51 to 60 of about 1,079 (157)
生物基磺酸盐改良剂对盐碱土的改良效果及油葵生长的影响 [PDF]
, 2018 为研发生态导向型盐碱地治理修复技术解决黄河河套宁夏平原土壤盐碱化,设计不同水平生物基磺酸盐改良剂用量(0、750、1 500、2 250、3 000kg·hm-2)进行盆栽试验。结果表明,生物基磺酸盐改良剂可有效降低盐碱土pH和全盐质量分数,促进油葵生长发育,但施用量过高会起到相反作用。当生物基磺酸盐改良剂施用量为2 250kg·hm-2时改良效果最佳:油葵蕾期土壤pH、全盐质量分数最低达到9.63和0.77g·kg-1,较对照（CK）分别下降6.14%和62.07%;油葵叶片抗氧化保护酶过氧化氢酶 ...
尹应武 +5 more
core
The promotion mechanism of how biochar affects the reclaimed soil microbial carbon sequestration capacity in coal mining areas [PDF]
Biochar application is a key measure for enhancing soil quality. However, the impact of biochar applications on the reclaimed soil for improvement on soil physicochemical properties, enzyme activity and microbial diversity is still unclear, especially ...
Fu CHEN +5 more
core +1 more source
Progress Analysis and Development Prospects of Soil Ecological and Environmental Effects of Interlayer Construction [PDF]
[Objective] This study systematically summarized and analyzed the current application status, technical characteristics, and environmental benefits of interlayer construction in soil improvement, nutrient cycling, ecological restoration, and crop ...
CHEN Jihong +7 more
core +1 more source
Shuitu Baochi Xuebao, 2004 针对红壤坡地水土流失严重的状况,选用横峰野葛、百喜草为材料对红壤坡地水土保持和土壤改良进行了研究。结果表明:横峰野葛和百喜草能有效地提高土壤持水量,降低土壤容重,增大土壤孔隙度,提高土壤PH值,增加土壤有机质和N、P、K含量,大大减少土壤侵蚀量和径流量,达到了较好的水土保持和改良土壤效果,而且野葛的综合效果比百喜草更好。
范淑英 吴才君
doaj +2 more sources
Shuitu Baochi Xuebao, 2019 为研究减少水稻籽粒中镉的积累，选择一中度重金属污染农田，进行了4种改良剂处理（不施改良剂、生物质炭、钙镁磷肥-坡缕石-硫磺粉（比例为100：50：1）和石灰-沸石-硫磺粉（比例为100：50：1））和2种水分管理模式（深灌和浅灌）的不同组合处理，田间试验研究了改良剂配合水分管理减少水稻吸收土壤镉的效果，改良剂用量为3 t/hm2。结果表明，施用改良剂和采取深灌均可显著减少水稻从土壤中吸收镉，并以二者配合的效果最佳。与浅灌/不施改良剂处理比较，钙镁磷肥-坡缕石-硫磺粉和石灰-沸石 ...
徐颖菲, 谢国雄, 章明奎
doaj
Shuitu Baochi Xuebao, 2020 通过土柱模拟试验，开展了不同水质淋洗下磷石膏及其与酸性材料组合施用后对宁夏碱化盐土土壤水盐运移的影响研究。以黄河水、低矿化度农田退水和高矿化度农田退水作为淋洗水源，腐植酸、糠醛渣和硫酸铝作为酸性材料。结果表明：（1）不同水质淋洗下，垂直湿润锋推进深度、累积入渗水量与入渗时间的平方根均呈线性关系，黄河水淋洗下，改良剂组合措施表现最优，而在高矿化度农田退水淋洗下，单施磷石膏措施最优。（2）黄河水和低矿化度农田退水淋洗下，施用改良剂降低了0—50 cm土层土壤电导率，黄河水淋洗下"磷石膏+硫酸铝"处理最低 ...
樊丽琴, 李磊, 吴霞, 王旭
doaj
[New pretreatment method for detecting petroleum hydrocarbons in soil: silica-gel dehydration and cyclohexane extraction]. [PDF]
Se Pu, 2023 Qu J +5 more
europepmc +1 more source
Soil Quality Assessment of Five Typical Forest Stands in the Dianchi Lake Basin based on MDS [PDF]
[Objective] Soil quality is a critical indicator of ecosystem health and sustainable land management. [Methods] Key soil quality indicators (e.g., organic matter, total nitrogen, available nitrogen, capillary porosity, and pH) were identified through ...
HUANG Shuai +4 more
core +1 more source
Shuitu Baochi Xuebao[目的] 黄土高原苹果园直接面临土壤酸化、结构恶化、肥力退化及保水能力差等问题,有效的土壤改良技术对改善黄土高原苹果园土壤质量、促进果园的健康和可持续发展至关重要。[方法] 基于黄土高原苹果园土壤改良的75篇文献1 302对田间试验数据,采用Meta分析和主成分分析(PCA)定量评估不同改良方式(覆盖、施肥和土壤改良剂)对土壤质量的改善效果。[结果] 生草覆盖、地膜覆盖、秸秆覆盖和砂砾覆盖降低土壤质量密度效果良好,降低幅度分别为6.63%,5.96%,6.04%,6.40%,其中 ...
段顺霞 +3 more
doaj
Shuitu Baochi Xuebao, 2016 为评价复合功能改良剂(NSA)对板结土壤的改良效果，通过小白菜盆栽试验，研究NSA对滨州粘质潮土的理化性状、土壤团聚体数量、分布和稳定性的影响。结果表明，增施NSA可降低土壤容重、比重和pH值，提高土壤总孔隙度；施用NSA显著增加了0.5～1 mm和0.25～0.5 mm的团聚体含量，显著降低了＜0.05 mm的团聚体含量，施用0.5%和1.0%的NSA后,土壤水稳性大团聚体总含量(R0.25)比CK分别显著提高67.14%和141.58%，NSA可将团聚体聚合成更大粒径来实现对土壤结构的改良 ...
马 +5 more
doaj