玉米闽紫糯1号高产结构与需肥特性研究

High-yield structure and fertilizer requirement of new black waxy maize Minzinuo 1

通过对玉米闽紫糯1号群体结构及需肥特性试验,探讨不同密度处理及肥料配比对闽紫糯1号光合群体特性、产量及品质的影响。试验结果表明,种植密度为6.75万株·hm-2时,群体叶面积发展动态合理,光合势、净同化率与叶面积系数最高,生育期内干物质积累量最大。氮肥、磷肥、钾肥对玉米产量贡献:氮肥>钾肥>磷肥;氮肥对玉米籽粒重量、蛋白质含量、淀粉含量的影响最大。氮、磷、钾3种肥料的最佳施用量为N 187.5kg·hm-2、P2O5 112.5 kg·hm-2、K2O 180.0 kg·hm-2。

The effect of different density and fertilizer application on the photosynthesis, yield and quality of Minzinuo was studied by the population and the fertilizer character test. The result showed that the population leaf area developed reasonable while the planting density was 6. 75×104·hm-2 and LAD, NAR and LAI were all the largest, dry matter accumulation was the maximum at the growing stage. The order of contribution to yield was N >K>P. N fertilizer had the largest effect on the weight, protein content and starch content of maize. The Optimal of N, P, K was N 187. 5 kg·hm-2, P 112. 5 kg·hm-2 and K 180 kg·hm-2.