玉米专用配方肥的肥效研究

目的]为了探讨玉米专用配方肥对玉米产量及氮肥利用率的影响。方法]采用"大配方,小调整"策略,根据区域总量控制、分期调控技术,采用磷钾肥衡量监控技术原理,通过不同农户田间小区试验,比较了大配方、小调整和农户习惯处理对玉米产量和氮肥利用率的影响。结果]与农民习惯处理相比,大配方和小调整处理提高了玉米产量和氮肥偏生产力,平均产量分别增加4.0%和19.7%,平均氮肥偏生产力分别增加36.9%和57.5%。结论]大配方和小调整处理可以达到增产、节本、增效的目的,而小调整处理的效果优于大配方处理。

Effects of Maize Special Compound Fertilizer on Maize

Objective] The study aimed to discuss the effects of maize special compound fertilizer on maize yield and partial factor productivity of applied nitrogen.Method] Based on the datum of soil testing and fertilizer project,field plot experiments were conducted to compare treatments of gross formula,minor adjustment and farmers practice on maize yield and partial factor productivity of applied nitrogen.Result] Compared with the farmers practice,maize yield and partial factor productivity of applied nitrogen was increased with treatments of gross formula and minor adjustment,which was 4.0% and 19.7%,36.9% and 57.5%,respectively.Conclusion] Treatments of gross formula and minor adjustment could not only realize the objective of increasing maize yield and saving the cost,but also improve partial factor productivity of applied nitrogen,of which the treatment of gross formula was better than minor adjustment.