桂西丘陵地区玉米不同施肥处理DTOPSIS法肥效评价

Fertilization Effect Evaluation with DTOPSIS Method: Varied Fertilization on Maize in Hilly Areas in Western Guangxi

【目的】筛选最佳的施肥方案,为本地区玉米合理施肥提供科学的依据。【方法】采用逼近理想解排序法(DTOPSIS法)对桂西丘陵地区玉米不同施肥模式效果的11项玉米农艺性状进行综合评价。试验设6个处理,无重复,随机排列。以农民施肥经验的氮肥施肥量、施肥时期与比例分配方案为基准,筛选出氮肥不同的施肥时期与比例分配研究。【结果】分析结果表明,处理2(经验施肥、ck_2)的施肥量及其施肥方法的基础上,基肥和苗肥施用量减少10-20%,而穗肥对应增施10-20%,施肥效果优于处理2(经验施肥、ck_2);反之,基肥和苗肥施用量增加10-20%,而穗肥对应减施10-20%,施肥效果次于处理2(经验施肥、ck_2)。【结论】不同施肥处理的施肥效果,处理5和处理6略优于处理2,而处理3和处理4较处理2差。

【Objective】It aims to screen the optimal fertilization method to provide scientific evidence for reasonable maize fertilization in the region.【Method】By using DTOPSIS method to maize planted in hilly areas of western Guangxi with different fertilization modes,comprehensive evaluation of agronomic characters of 11 maize varieties is carried out. 【Results】Analysis results suggest that the fertilization quantity and fertilization method based on Treatment 2(traditional and empiric fertilization,ck_2) makes the use of base fertilizer and seedling fertilizer decrease by 10-20%,while the use of panicle fertilizer increase by 10-20%,whose fertilization effect is better than Treatment 2(traditional and empiric fertilization,ck_2); By contrast,when the use of base fertilizer and seedling fertilizer increase by 10-20%and the use of panicle fertilizer decrease by 10-20% correspondingly,the fertilization effect is worse than Treatment 2(traditional and empiric fertilization,ck_2). 【Conclusion】For different fertilization effect on varied fertilization,effects of Treatment 5 and 6 are slightly better than effect of Treatment 2,while effects of Treatment 3 and 4 are worse than effect of Treatment 2.