[1]LI Yinkun,MEI Xurong,XIA Xu,et al.Effect of Nitrogen Reduction and Combined Application of Organic Fertilizer on Soil Water Dynamics and Water and Nitrogen Use Efficiency of Summer Maize in North China Plain[J].Research of Soil and Water Conservation,2018,25(05):54-60.
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Effect of Nitrogen Reduction and Combined Application of Organic Fertilizer on Soil Water Dynamics and Water and Nitrogen Use Efficiency of Summer Maize in North China Plain
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 05
Page number:
54-60
Column:
Public date:
2018-09-06
- Title:
- Effect of Nitrogen Reduction and Combined Application of Organic Fertilizer on Soil Water Dynamics and Water and Nitrogen Use Efficiency of Summer Maize in North China Plain
- Keywords:
- nitrogen application reduction; organic fertilizer; summer maize; soil water storage; water and nitrogen use efficiency
- CLC:
- S513;S143.1
- DOI:
- -
- Abstract:
- In order to achieve the high yield, and water and nitrogen efficient utilization, a 2-year field experiment was conducted in North China Plain to study the effects of various nitrogen application practices on soil water storage, and water and nitrogen utilization for summer maize. Four treatments were no nitrogen (CK), traditional nitrogen (CN, 228 kgN/hm2), reduced nitrogen (ON, 152 kgN/hm2) and combined nitrogen fertilizer and organic fertilizer (ONM, 152 kgN/hm2). The results indicated that the variation in seasonal soil water storage was affected by precipitation and irrigation, and was also mainly affected by summer maize growth from the jointing to mature stage; soil water storage in the 0~160 cm soil layer of the ONM treatment increased compared with the CN treatment, with increases of 8.8%~10.5% in both years (p < 0.05); the soil water content was lower at the end of the growing season than at the beginning in the 0~40 cm soil layer under ONM and CN treatments, with decreases of 14.5%(p < 0.05) and 5.7%, respectively, demonstrating that treatment ONM has consumed much more soil water; the summer maize water consumption from sowing time to seeding stage and jointing to tasseling stage was higher, which had accounted for 55.1%~66.0% of the total crop evapotranspiration; treatment ONM could decrease and increase water consumption during sowing time-seeding stage and jointing-mature stage, respectively, and the average of water use efficiency increased by 8.9% and 7.4% (p < 0.05), compared with treatments CK and CN, respectively; for treatment ONM, the average of yield and nitrogen partial factor productivity was increased by 11.8% (p < 0.05) and 58.9% (p < 0.05), respectively, compared with treatment CN. In conclusion, reducing the rate of nitrogen at 1/3 based on traditional nitrogen and combined application organic fertilizer can improve soil water storage, and increase summer maize yield and water use efficiency significantly.
- References:
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1900-01-01