[1]MA Yue,GUO Niandong,ZHANG Ruifang,et al.Study on Soil and Nutrient Losses on Gneiss in Different Growth Periods of Peanut[J].Research of Soil and Water Conservation,2016,23(05):304-309.
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Study on Soil and Nutrient Losses on Gneiss in Different Growth Periods of Peanut
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 05
Page number:
304-309
Column:
Public date:
2016-10-28
- Title:
- Study on Soil and Nutrient Losses on Gneiss in Different Growth Periods of Peanut
- CLC:
- S157.1;S565.2
- DOI:
- -
- Abstract:
- Indoor simulation rainfall experiment was conducted to evaluate the effects of peanut at different growth stages on the surface soil and nutrient losses in gneiss area. The results showed that the yields of runoff and sediment during different growth periods peanut were different, and the loss amounts decreased in the order: 0 d > 20 d > 40 d > 60 d. Compared with the control (0 d), runoff slope with 60-day-peanut decreased by 38%, sediment production slope with 60-day-peanut decreased by 47%. The losses of nutrients during different growth stages decreased with the increase of the growth days, compared with the control (0 d), the losses of nitrogen, phosphorus, potassium in the 60 days decreased by 75%, 45%, 70%, respectively, the loss of nitrate during the rainfall was always higher than ammonium. The amounts of nutrient loss at the different growth stages represented the cumulative loss order: potassium > nitrogen > phosphorus. The equation fitting factor of total nutrient loss and sediment yield was more than 0.98, and there was a significant positive correlation; nutrient losses from gneiss area were mainly in the form of sediment combination state especially for phosphorus and potassium, nitrogen loss was mainly in the form of dissolved nitrogen or both dissolved nitrogen and sediment-associated nitrogen.
- References:
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