Effects of New Types of Urea on Yield,Nitrogen Absorption and Utilization,and Production Efficiency of Winter Wheat-Summer Corn Rotation
The aim was to explore the effects of different new urea on yield and nitrogen uptake and utilization of winter wheat-summer maize rotation system in the North China Plain,with a view to providing a theoretical basis for the application of new urea in practical production.Using common urea as a control,six new types of urea were applied for 5 consecutive years to measure the yield of wheat-maize rotation,analyze the effect of new urea on the composition of the yield,and at the same time,determine the nitrogen uptake of plants and seeds,and account for the nitrogen fertilizer agronomic efficiency,bioproductivity,and production benefits of the new types of urea.The results showed that compared to the ordinary urea,continuous application of the new urea all significantly increased the yield of wheat-maize rotation system(P＜0.05),with the range of yield increase from 7.08％to 11.77％,of which 9.02％was increased by the loss-control urea in the wheat season,and 15.52％was increased by the zinc-containing urea in the maize season;there was no significant difference in nitrogen absorption and utilization of the new urea during the wheat season,while the average nitrogen fertilizer agronomic efficiency of loss-control urea fertilization and zinc containing urea in the corn season reached 9.49 kg/kg and 10.63 kg/kg,respectively.From the perspective of production efficiency,the net benefit of using loss-control urea in batches and zinc(manganese)containing urea was the highest.Under the conditions of this experiment,it was recommended to apply loss-control urea or zinc(manganese)containing urea in the winter wheat-summer corn rotation system in the North China.
new ureawheat-corn rotationyield compositionnitrogen absorptionnitrogen fertilizer utilizationnitrogen use efficiencyproduction efficiency
万方数据
维普
