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- W2366330394 abstract "To better understand the optional N application of summer maize,field experiment with the summer maize-winter wheat rotation was carried out in Huang-huai-hai Plain in 2002-2003.Four rates of nitrogen fertilizer(i.e.0,90,180,270 and 360 kg/ha) were applied to maize with high-yield hybrid Zhengdan 958 and the population of 9 plants per square meter.The following crop is winter wheat with cultivar 97-3 and seed rate of 704 grain per square meter.N rate of 144 kg/ha was applied at wheat sowing.With exception of the precipitation of 112.1 mm during wheat season,two times of irrigation with 75 mm at each time were used on April 13 and May 9,2003,respectively.The influences of maize N rates on soil inorganic N dynamics during wheat season and wheat N utilization were examined.The results are as follows:In comparison with zero N applied to maize(ZN),N applied to maize significantly increases the content of 0-200 cm soil nitrate during wheat season.The nitrate contents in the 0-40,0-130 and 0-200 cm soil profiles all apparently ascend with N rate increment from wheat shooting to maturity.The amount of 0-130 cm soil inorganic N in ZN plot decreases by 156 kg/ha during wheat season. However,that in the N rate of 90 kg/ha plot increases by 41 kg/ha at the same period,and the amount of soil inorganic N continually increases with the N rate increment during wheat season.At wheat maturity,The amount of plant N and that of grain N both increase with the increment of N rate.The amount of plant N has no significant differences between N rates when N rate is no more than 180 kg/ha.There is also no apparent differences of the grain N amount between N rates when N rate is no more than 270 kg/ha.In this experiment,the wheat grain NUE is just 0.2%-2.9%." @default.
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- W2366330394 date "2006-01-01" @default.
- W2366330394 modified "2023-09-24" @default.
- W2366330394 title "Influences of N Rates Applied to Summer Maize on Soil Inorganic Nitrogen Supply and Winter Wheat N Utilization During the Following Crop Season" @default.
- W2366330394 hasPublicationYear "2006" @default.
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