密植条件下一次性施肥对春玉米干物质及养分利用效率的影响

Effects of Single Basal Fertilization on Dry Matter and Nutrient Use Efficiencies of Spring Maize in the Dense Conditions

通过田间试验,研究了一次性施肥方式对晋北地区春玉米干物质及养分利用效率的影响。结果表明,一次性施肥方式与农民常规施肥方式相比,产量差异不显著,但经济效益相对提高;一次性施肥增加了晋北地区春玉米干物质积累速率,对整个生育期干物质积累并无影响;一次性施肥促进了氮、磷养分的吸收和利用速率。综合分析认为,晋单85号春玉米品种在晋北地区适宜一次性施肥种植。

Through field experiment, the effect of single basal fertilization on dry matter and nutrient use efficiency of spring maize in northern Shanxi was studied. The results showed that the yield difference was not significant, but the economic benefit was relatively improved compared with the conventional fertilization methods. Single basal fertilization increased the dry matter accumulation rate of spring maize in the north of Shanxi, and had no effect on dry matter accumulation during the whole growth period. At the same time, the absorption and utilization rate of nitrogen and phosphorus were also promoted by single basal fertilization. Comprehensive analysis shows that the suitable cultivation method of single basal fertilization is suitable for planting in north of Shanxi province.