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Evaluations of the effects of soil properties and electrical conductivity on the water content reflectometer calibration for landfill cover soils
soil electrical conductivity soil index properties time domain reflectometry volumetric water content WCR calibration
2016/8/2
This study presents soil-moisture calibrations using low-frequency (15–40 MHz) time domain reflectometry (TDR) probe, referred to as water content reflectometer (WCR), for measuring the volumetric wat...
土壤质地对地下滴灌灌水器水力要素的影响（Effect of Different Textural Soils on Hydraulic Characteristics of Emitters under Subsurface Drip Irrigation）
地下滴灌 灌水器 土壤质地
2009/5/19
为研究不同质地土壤中灌水器水力要素的变化规律及其差异，选取灌水器工作压力、土壤容重和土壤初始含水率为因素，分别在粘土、壤土和砂土中采用混合水平均匀设计安排试验。试验结果表明，不同土壤中的灌水器出流规律一致：即当工作压力不变时，灌水器流量在灌水初期略大，而后减小并趋于恒定，这个变化过程仅1～2min；在相同压力下，地下滴灌灌水器流量比地表滴灌小5%～20%，压力越大，二者越接近；灌水器流量随工作压力...
N2O emission from mineral soils – Reviews
assimilatory and dissimilatory reduction of nitrate nitrification and environmental conditions
2014/2/28
Increasing deposition of N-compounds cause environmental problems such as leaching of nitrate or enhanced emission of N2O. Most N2O is formed from dissimilatory reduction of nitrate in oxygen deficien...
The productive and economic parameters of the Gemer region agricultural soils
soil productivity potential soil parameters soil profitability
2014/3/28
On the basis of structure and qualitative parameters of agricultural soils, there are only 23.4% non profitable soils for the winter wheat growing in the total area of the Gemer Region. The same perce...