玉米自交系的干物质积累与氮磷钾吸收

Dry Matter Accumulation and N, P, K uptake of Maize Inbred Line

以自交系Ｍｏ１７与杂交种丹玉１３为材料，通过对群体全生育期植株干物质与氮、磷、钾积累的较系统分析，建立了群体干物质与氮、磷、钾积累的数学模式，揭示了自交系与杂交种的差异；Ｍｏ１７全生育期干物质积累量为丹玉１３的６０％，氮、磷、钾吸收量为丹玉１３的５３％、５９％和６７％，生产单位子粒Ｍｏ１７较丹玉１３所需氮少１０５％、需钾多１３％。

A mathematical model was set up by systematically analysis dry matter of plants of whole population growth stage and N, P, K accumulation The model revealed the difference between inbred line and hybrid The amount of dry matter accumulation of Mo 17 in whole growth stage was 60% of that of Danyu 13, the amount of N, P, K uptake was 53%, 59% and 67% of that of Danyu 13, respectively N fertilizer required to produce unit grain in Mo 17 was 105 less than Danyu 13 K fertilizer was 13% more than Dabyu 13