搜索结果: 1-4 共查到“农业机械学 Soil”相关记录4条 . 查询时间(0.218 秒)
Silage-corn harvesting machinery traffi c eff ects on soil bulk density and water permeability
repeated traffi c passes silage harvester soil compaction soil physical damage soil porosity
2014/2/24
Soil compaction caused by machinery traffi c aff ects the growth of agricultural crops and also has environmental eff ects
like soil damage and erosion. Field experiments were cond...
大田尺度下车载式土壤多参数测量方法研究（On-the-go Measuring Method of Soil Parameters in Field-scale）
土壤参数 车载式测量 大田尺度
2010/12/29
应用自行研制的土壤含水量、电导率与耕作阻力车载测试系统以及EM38电导率测试仪，在特定的耕作和施肥管理制度试验田中进行大田尺度下的土壤多参数车载测量研究。在土壤参数空间分布信息基础上进行相关分析，结果表明复合传感器具备农田土壤含水量和电导率变异响应能力，进一步建立了农田土壤电导率与含水量、耕作阻力以及施肥信息之间的统计预测模型。
Research of correlation between electric soil conductivity and yield based on the use of GPS technology
soil electric conductivity precision farming soil properties geostatistic
2014/2/27
A contact method was used for the continuous measuring of soil electric conductivity using a six disc electrodes apparatus. The placement of the electrodes was chosen on the basis of the depth of the ...
Longitudinal oscillations of the sugar beet root crop body at vibrational digging up from soil
longitudinal oscillations forced oscillations root crop elastic body Ostrogradskii-Hamilton principle vibrational digging up
2014/2/28
The longitudinal vibrations theory of a continuous elastic body with one fixed extremity is designed. The Ostrogradskii–Hamilton principle of a stationary operation is applied. By Ritz’s method the Ri...