Field study on denitrification in soil of south Fujian agricultural catchment
Denitrification from soils is the main pathway of gaseous loss for nitrogen in the catchments.We measured the denitrification rate from the top-soil in Wuchuan catchment by using the acetylene inhibition technique.The result of this experiment indicated that denitrification of the soil had the temporal and spatial variance.The rate of denitrification that occurred in uplands of the catchment was higher than any other places,and denitrification was enhanced when there were many rains and when the soil temperature was high.The flux of denitrification was mostly related with fertilization,soil moisture and air temperature.Air temperature was top-dressed affected denitrification significantly.The gaseous N loss rate through denitrification represent about 16% of the fertilizer applied in the catchment scale.
This article deals with the phenomenon of crime as experienced by farmers in various farms in the area of "Transvaal Sugar Limited". The empirical-phenomenological method was utilised and the following five steps were employed: reduced transcriptions, summarising the main points of the case, illustrated condensation of the case, description of the psychological structure of the case and essential structure of interviews in all the cases. The essential structure of farmers' experiences of farm crimes identified five areas which addressed the experience of crime as a theme namely anticipation of levels of service delivery by the SAPS, reaction arising from frustration at poor service delivery, crime prevention as an extension of the previous area, effect of crime on quality of life and mutual trust and loyalty between farmers and farmworkers.