Results 71 to 80 of about 506 (108)
Shuitu Baochi Xuebao, 2020 在四川丘陵区紫色土上进行田间试验，以无物料还田为对照，对比分析了蚕豆秸秆、油菜秸秆、猪粪3种物料还田对夏玉米吐丝期和收获期0—20，20—40 cm土层土壤有机碳、全氮、微生物量碳氮含量及微生物熵的影响，以期为农业废弃有机物料的综合利用及四川丘陵区土壤质量的提升提供理论参考。结果表明：（1）尽管有机物料还田于0—20 cm土层中，0—20，20—40 cm土层土壤有机碳（SOC）、全氮（TN）、微生物量碳（SMBC）、微生物量氮（SMBN）含量均受到有机物料的深刻影响。各处理0—20 cm土层SOC ...
周元 +7 more
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Analysis of differences in physicochemical properties and bacterial community characteristics of rhizosphere soil in apple orchards under different cover treatments [PDF]
[Objective] Cover cropping is a widely adopted soil management technique used in fruit tree cultivation. By planting specific vegetation to cover the ground, this practice significantly influences nutrient cycling, microbial activity, and biodiversity ...
CAI Rongjing +10 more
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种还分离模式下玉米秸秆还田对土壤磷有效性及其有机磷形态的影响
Shuitu Baochi Xuebao, 2017 采用尼龙网袋法对种还分离模式下的玉米秸秆还田进行田间原位模拟，比较不同秸秆还田量在不同还田深度下对土壤全磷、速效磷和不同形态有机磷的影响。试验设置4个水平秸秆添加比例R0（0%）、R1（0.44%）、R2（0.88%）、R3（1.32%）和3个不同还田深度0—15，15—30，30—45 cm交叉处理。结果表明，秸杆还田1 a后，各土层中土壤全磷含量随秸秆还田量的增加均无显著改变；在0—15 cm土层中，与R0相比，R1、R2、R3处理下的土壤速效磷分别增加了27.0%，49.3%，64.1%，在15 ...
赵小军, 李志洪, 刘 龙, 崔婷婷
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Shuitu Baochi Xuebao, 2006 大田试验研究了保护性耕作对土壤微生物量、活跃微生物量、土壤呼吸、呼吸商、土壤酶的影响。结果表明，秸秆还田能够显著提高土壤微生物量碳和活跃微生物量，深松耕还田能显著提高土壤活跃微生物量。随耕作作业之后时间的推迟，活跃生物量减小。秸秆还田初期（小麦越冬期）能显著提高土壤呼吸作用，提高99．7％；后期（小麦播种期）能显著降低土壤呼吸，降低16．6％。随耕作作业之后时间的推迟，秸秆还田和保护性耕作都会减少农田向大气中CO2的排放，减少土壤碳库的亏损。深松耕还田显著提高土壤脲酶、蔗糖酶活性 ...
王芸 +7 more
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Synergistic benefit analysis of carbon sink capacity and biodiversity function of artificial ecosystems in mining reclamation sites [PDF]
Land reclamation in mining areas is an inevitable measure to accelerate the restoration of biodiversity, promote the transformation and development of mining areas, and realize the transformation of carbon sources into carbon sinks. There are few studies
Cong MEN +5 more
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Development Situation and Recommendations for Ecosystem Carbon Sink in China [PDF]
[Introduction] Realizing peak carbon dioxide emissions before 2030 and achieving carbon neutrality before 2060 have been identified as important strategic goals for fostering high-quality economic and social development in China.
Fulin YANG +4 more
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Shuitu Baochi Xuebao[目的] 为探究不同秸秆还田方式对季节性冻融期黑土温度的影响。[方法] 通过田间温度监测,以大豆田为研究对象,设置秸秆覆盖还田(FG)和秸秆翻混还田(FH)2种还田方式,还田量分别为秸秆总量的30%(59 670 kg/hm2),60%(119 340 kg/hm2),90%(179 010 kg/hm2),并设置裸地为对照(CK)共7种处理。各处理自地表向下沿土壤垂直剖面分别设置5,10,20,30 cm 4个土层深度,分析冻融期不同秸秆还田方式及还田量下土壤温度变化特征。[结果] (1 ...
李爽 +4 more
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, 2011 “全球气候变暖“一直是世界关注的话题,而从哥本哈根气候大会召开起,以低能耗、低污染、低排放为特征的低碳经济就成为国内外舆论最热门的词汇之一,低碳发展模式逐步成为国际主流价值观。福建省在建设海峡西岸经济区进程中,如何推行低碳理念,发展低碳经济,在推进节能减排、建设低碳城市方面给全国其他地区提供示范作用,成为一项紧迫的研究课题。福建省社科基金《福建省低碳经济发展模式与对策研究》(项目批准号:2010B053 ...
吴崇伯
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Spatial Pattern and Influence Factor Analysis of Soil Organic Matter Based on the GeoDetector Model: Taking Liaoyang—Anshan Area as an Example [PDF]
Spatial pattern of organic matter distribution and its influencing factors in the study area can provide a decision-making basis for territorial spatial planning. The majority of previous studies in this area focused on the soil surface, and most of them
Cang GONG +8 more
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