江西农业学报Issue(12)：59-63,5.
小麦宽空幅冬季培肥的产量表现、经济效益及化肥减施效应研究
Effects of Winter Fertilization within Wide Bare Land of Wheat Field and Reduction of Chemical Fertilizer Application Rate on Yield and Economic Profits of Wheat
摘要
Abstract
Under the planting pattern of wheat with wide (40 cm) bare land between wheat plant lines (20 cm in width), the authors studied the effects of applying organic fertilizer within the wide bare land in winter and reducing the application rate of chem -ical nitrogen ( N) fertilizer at elongating and booting stages on wheat yield , yield components , economic profits and partial produc-tivity of chemical N.The results showed that:under the condition of conventional chemical N application rate (108.0 kg/hm2) for e-longating and booting, in comparison with not applying organic fertilizer (the control), applying 12.0, 18.0 and 24.0 t/hm2 organic fertilizer in winter increased wheat yield by 13.83%, 17.81%and 19.03%, respectively;when chemical N application rate was the same, the panical number per unit area was increased with the increase in organic fertilizer application rate ;when organic fertilizer application rate was the same , the yield components of wheat gradually decreased with the reduction in the application rate of chemi -cal N for elongating and booting .According to the following significant standards for economic profits:newly-increased net income rate≥22%, and rate of remuneration of marginal cost≥1.5, applying 18.0~24.0 t/hm2 organic fertilizer in winter combined with the application of 108.0 kg/hm2 chemical N at elongating and booting stages could obtain both high yield and high economic profits . The partial productivity of chemical N in all winter fertilization treatments was very significantly higher than that in the control .关键词
小麦/宽空幅种植/冬季培肥/化肥减施/产量/经济效益Key words
Wheat/Wide bare land between wheat plant lines/Fertilization in winter/Reduction of chemical N application rate/Yield/Economic profits分类
农业科技引用本文复制引用
刘建,魏亚凤,杨美英,薛亚光,汪波,李波..小麦宽空幅冬季培肥的产量表现、经济效益及化肥减施效应研究[J].江西农业学报,2015,(12):59-63,5.基金项目
江苏省农业科技自主创新资金项目［CX（12）3040］。 （）
