Simulated experiment was used in this experiment to study the effects of soil factors on the farmland nitrogen losses and its concentration under artificial rainfall and natural rainfall. A number of soil and landscape factors were taken into account such as slope gradient, plant covers, fertilizers’ application performances as well as rainfall intensity. The result showed: the concentration of total nitrogen (TN) and the loss rate increased when the slope gradient became high; there has no significant difference in TN concentration between under artificial rainfall and under natural rainfall, TN concentration in runoff is smaller with the courser soil texture; and obviously lower with wheat planting than without covering, among which the loss decreased 11.80~238.46kg/hm2; in condition of the same N application account, diffuse application of fertilizer caused more nitrogen loss than cave application.
Zhang Naimingm, Zhang Yujuan, Chen Jianjun, Li Chengxue
. Factors of Influencing Soil-nitrogen Pollution Load of Sloping Field in the Dian Lake Watershed[J]. Chinese Agricultural Science Bulletin, 2004
, 20(5)
: 148
-148
.
DOI: 10.11924/j.issn.1000-6850.0405148
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