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- W2350360968 abstract "A comparative field experiment was conducted at farming field and non-farming field in Ranzhuang Experiment Station to obtain the soil NO-3-N distribution characteristics.The results showed that soil NO-3-N mainly come from fertilization,nitrate nitrogen distribution is influenced by precipitation and irrigation.Nitrogen fertilizer leached into deep soil obviously.Soil NO-3-N content changed with depth largely in maize growth period,which presented bimodal phenomena.Nitrate nitrogen content also increased with depth.In root layer soil(0-100 cm),the first peak occured at 80-100 cm,and the second emerged at 200 cm,and the value of the second peak was bigger than the first.The first peak was mainly caused by the fertilization at the corn seedling stage;the second peak was mainly caused by the nitrogen deep transportation in the wheat growth period.The soil nitrogen content reduced with depth and stabilized on 20 mg/kg below 350 cm soil layer.The soil nitrate nitrogen distribution characteristicsdisplayed an obvious difference under the different tillage condition,the NO-3-N content of farming soil was much bigger than that of the non-farming area,and still distributed little in deep soil.Some measures about fertilizing and irrigation management should be taken to improve the utilization efficiency of nitrogen fertilizer and reduce the pollution of water body." @default.
- W2350360968 created "2016-06-24" @default.
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- W2350360968 date "2013-01-01" @default.
- W2350360968 modified "2023-09-24" @default.
- W2350360968 title "Experimental study on nitrate nitrogen distribution characteristics in the Hebei Plain" @default.
- W2350360968 hasPublicationYear "2013" @default.
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