Based on one-dimensional yellow loam soil columns,we studied the effects of different nano-submicron materials content(0,0.004%,0.020%,0.040%,0.100%) on the migration of available potassium.The main results were showed as follows,the nano-submicron materials had obvious influence on graving direction migration of available potassium in yellow loam.In the training time,the content of available potassium in the experimental group was stable,and had no large fluctuation.Nano-submicron materials played a slow-r...
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