Effects of Phosphorus Fertilizer on the Characteristics of Dry Matter Accumulation and Yield in Maize under High Planting Density
[Objective] In order to discuss the effect of phosphorus fertilizer on the characteristics of yield and nutrient uptake in maize.[Method]The split block design was used to analyze the effect of different P2O5 quantities on the dry matter accumulation and yield in maize, and further explore the relationship between yield and phosphorus application under high density planting and fertigation.[Result]The results indicated that with the increase of phosphorus application, the maize yield and stem diameter showed a parabolic trend.The dry matter accumulation was increased with the maize development, which was slowly accumulated from elongation stage to bell stage and rapidly accumulated from bell stage forward.Under 187.5 kg/hm2 phosphorus application, the leaf area index (LAI) and SPAD value were highest, respectively at different developmental stages.Under 187.5 kg/hm2 phosphorus condition, the leaf area index (LAI) value was significantly higher than that under the other treatments.With the increase of phosphorus application, the plant height of maize was increased, which showed the exponential trend.[Conclusion]Conclusively, the yield peaked at 16,021.61 kg/hm2 under the appropriate phosphorus application of 213.8 kg/hm2 at this experimental site.
phosphorus fertilizerhigh density plantingdrip irrigationmaizedry matter accumulationyield
国家科技期刊平台
NSTL
万方数据
维普
