搜索结果: 31-45 共查到“知识库 土壤改良学”相关记录307条 . 查询时间(0.484 秒)
The evaluation of degraded land by application of the contingent method
contingent valuation method (CVM) land evaluation land protection land reclamation public awareness of soil protection willingness to pay
2015/3/10
Industrial activities in the Czech Republic have brought into existence many degraded and contaminated sites. Such areas are not suitable for farming, building or recreation purposes. The necessary re...
Impacts of land use changes on soil erosion in Pa Deng sub-district, adjacent area of Kaeng Krachan National Park, Thailand
land cover land use changes soil erosion Universal Soil Loss Equation
2015/3/5
Soil erosion has been considered as the primary cause of soil degradation since soil erosion leads to the loss of topsoil and soil organic matters which are essential for the growing of plants. Land u...
Geostatistical analysis of soil texture fractions on the field scale
estimation uncertainty kriging prediction soil texture fractions spatial variability
2015/3/3
Geostatistical estimation methods including ordinary kriging (OK), lognormal ordinary kriging (LOK), cokriging (COK), and indicator kriging (IK) are compared for the purposes of prediction and, in par...
Influence of terrain attributes and soil properties on soil aggregate stability
loess soil erosion soil structure topography water stable aggregates
2015/3/3
The study on the relationship between the soil aggregates stability assessed using water stable aggregate (WSA) index and the selected terrain and soil properties was performed on a morphologically di...
Comparative effects of different soil amendments on amelioration of saline-sodic soils
amendments plant salinity sodicity soil yield
2015/3/3
A greenhouse experiment was conducted to test the potential of different soil amendments in saline-sodic soils reclamation; to affect the growth response of alfalfa (Medicago sativa L.) plants grown o...
Do Andosols occur in the Czech Republic?
Andosols diagnostic characteristics genesis occurrence in the Czech Republic proposal for Czech classification
2015/3/2
The aim of this contribution was either to confirm or refuse the supposition that there are soils on the volcanic effusive rocks in the Bruntál district which can be assigned to the referential group ...
Ecopedological research for ecological rehabilitation of degraded lands from Eastern Romania
assessment of ecological impact degraded soils Eastern Romania ecological remediation impact matrix
2015/3/2
The assessment study of the global ecological impact tries to highlight the main factors and negative ecological determinants, due to a lack or excess, and it also focuses on highlighting the main neg...
Evaluation of Management Strategies and Physiological Mechanisms of Agrostis Species for Reduced Irrigation Environments
Turfgrass Water Drought Wetting Agent Agrostis
2014/11/17
Water is a basic necessity for turfgrass growth and metabolic processes, with optimal levels required for the maintenance of turf quality and function. As water restrictions for irrigation of landscap...
Physio-Chemical Evaluation and Functional Assessment of Native Wetland Soils and Organic Amendments for Freshwater Mitigation Wetlands
mitigation wetlands wetland soils organic amendments for mitigation wetlands nonpoint source pollution
2014/11/17
Due to the history of wetland loss within the United States a National “No Net Loss” policy was adopted in 1988. This policy requires the creation of mitigation wetlands to replace lost and/or damaged...
甘肃省农业科学院土壤肥料与节水农业研究所：土壤研究室
甘肃省农业科学院 土壤肥料与节水农业研究所 土壤研究室
2023/8/11
土壤研究室是面向甘肃土壤资源，开展了卓有成效的研究工作。先后为甘肃省第一次、第二次土壤普查提供了主要的技术支撑，在第二次土壤普查中，先后有6位专家参加了甘肃土壤普查专家组。土壤研究室为甘肃土壤分类、土地利用规划、土壤改良培肥等作出了自己独有的贡献，由马俊贤主编的“甘肃土壤”获国家科技进步二等奖，由谭伯勋命名的“灌漠土”被全国第二次土壤普查办公室确定为全国土类正式名称，由李朝刚主持的“甘肃沿黄灌区土...
在引黄水量大幅减少且大范围实施节水工程的条件下，为使农田水土环境仍能保持良性健康发展，该文以内蒙古河套灌区隆胜试验区为研究对象，开展引黄灌区玉米生育期适宜灌水决策模拟研究。在田间试验的基础上，对土壤含水率和土壤含盐量的观测数据进行了统计分析，土壤含水率与含盐量观测值均呈中度变异性。利用克里格插值方法按土壤表层盐分空间变异将研究区分为南北2个区，分别在2个区域内建立了土壤水盐数值模型SWAP，分别对...
Assessment cultivated period and farm yard manure addition on some soil properties, nutrient content and wheat yield under sprinkler irrigation system
Sandy Soil Hydrophysical Chemical Properties
2013/2/27
This study examined changes in some soil hydrophysical, chemical properties and wheat yield (grain; straw yield, N, P, K, Protein and carbohydrates contents) as trends under two cultivated period 10 a...
植烟土壤酸化及改良技术研究进展
植烟土壤 酸化 改良技术
2015/8/31
土壤酸化不利于烟草生长发育,影响优质烟叶的形成。目前我国植烟土壤酸化问题严重,且主要集中在南部主要产烟区。鉴于此,笔者综述了引起土壤酸化的原因、土壤酸化的机理与危害,土壤酸化对烟草生长发育,产质量的影响以及改良土壤酸化的主要技术,并就土壤酸化改良技术提出了建议。
太湖流域典型蔬菜地磷流失因素的交互效应模型研究
土壤磷 影响因素 交互效应 太湖流域
2013/9/4
本文通过野外径流小区试验,采用人工模拟降雨,研究了雨强、施磷水平、坡度以及植被覆盖度对菜地土壤磷素径流流失的影响。在此基础上,结合二次通用旋转组合设计方法,构建了土壤TP和PP浓度与雨强、施磷量和坡度之间关系的回归模型,并对各因子之间的交互作用进行了分析。结果表明,雨强、施磷量和坡度的增加,从而增加了土壤侵蚀,促进了径流中TP、DP和PP的流失;而小白菜在不同的生长期内,随着植被覆盖度的增加,产流...