灰色关联分析在玉米高产施肥技术上的应用

Application of Grey Relational Analysis to High-Yield Fertilization Technique of Corn

通过施肥因子对玉米产量的分析，研究影响作物产量的各施肥因子的影响程度．通过关联因子和关联序分析，提出一套切实可行的施肥方案．并为今后研究作物施肥提供一条新的行之有效的研究途径和一种新的方法．研究结果表明：在玉米高产施肥中，施肥与产量之间的关联序为：基N＞追N＞总N＞总K＞追K＞基P＞追P＞总P（总N＞总K＞总P），粒N＞苗N＞穗N＞穗K＞粒P＞苗K＞苗P＞穗P＞粒K．这为玉米高产施肥提供了重要的理论依据，并为作物施肥技术研究开辟了一条新路．

Using the grey relational grade and order analysis, this paper deals wih the effective grade of dressing factors on corn yield. It is indicated that the relational order between dressing factors and corn yield is as followes: basic dressing N>supplementary N>total dressing N>total dressing K>supplementary K>basic dressing P>supplementary P>total dressing P; and that of dressing N in grain formation period >dressing N in seedling period>dressing N in spike period>dressing K in spike period>dressing P in grain formation period>dressing K in seedling period>dressing P in seedling period> dressing P in spike period>dressing K in grain formation period. Based on above analysis, a more practical fertilization project would be able to be put forward. It is suggested the method described in this paper should be a useful new way to fertilization technique research.