2007•Journal of Northwest A&F UniversityRequires access
Effects of soil cornstalk fertilization on nutrient leaching in preferential flow
Yuhui Geng, Lu Wenxi, Jiang Yimei
Open publisher page 3 citations
Abstract
In order to find the effect of soil cornstalk fertilization on nutrient leaching in preferential flow,nutrient leaching experiment was designed with soil column in size of 0.8 m in depth and 0.15 m in diameter.The results indicated that applying cornstalk into soil had a better effect on decreasing the nutrient leaching.Soil cornstalk fertilization delayed the speed of nutrient leaching,so decreased the amount of leaching water that was only one third of the soil without cornstalk fertilization.The concentration of the leaching water decreased after cornstalk fertilization,and the decreasing of different nutrients varied:NH+4-NK+PO-4NO-3,but before the end of the leaching experiment,the concentration of leaching water in cornstalk fertilization soil was a little higher than the leaching water of the soil without the application of cornstalk.Thus,soil fertilizing with cornstalk was an effective method for reducing nutrient leaching and the pollution of underground water through decreasing the speed and nutrient concentration in preferential flow.