摘要
在辛集马兰村进行的夏玉米平衡施肥试验研究表明,7个处理中,OPT处理的夏玉米产量和纯增效益最高;在氮、磷肥一定的条件下,增施钾肥可显著提高玉米产量;在一定条件下,磷钾肥投入增加的效益远远大于氮肥投入增加的效益,与磷肥相比,钾肥投入增加的效益较大。
The balanced fertilization experiment in summer-corn done in Malan Village, Xinji County showed that the summer-corn yield and net return of the OPT treatment are the highest among the seven treatments. Improving the K fertilizer with adequate N and P fertilizer can remarkably increase the yield. Under certain conditions, the increased benefit by inputting P and K fertilizer is greater than N fertilizer, and compa- ring P and K fertilizer, K is greater than P.
出处
《河北农业科学》
2005年第3期49-51,共3页
Journal of Hebei Agricultural Sciences
基金
河北省科技攻关计划项目(042201107)
关键词
夏玉米
OPT
平衡施肥
经济效益
Summer-corn
OPT
Balanced fertilization
Economic benefit
