玉米產量及相關生理性狀對栽培密度的反應

Abstract

本試驗於1985與1986年秋作進行，採用玉米品種臺農351號為材料，栽培之行距均為80 cm，株距分10、20與40 cm三種(1986年增加株距30 cm處理)，並於吐絲期及吐絲後二週將密植族群間拔，行密度變化處理，探討栽培密度對玉米乾物質生產、分配及產量性狀的影響，並就氮素與非構造性碳水化合物(TNC)之累積、轉運及利用效率等因子進行研究。 Experiments were conducted in the fall crop seasons of 1985 and 1986 by using maize hybrid Tainung 351 as material. Row spacing of 80 cm was emplyed in association with between-plant spacings of 10, 20 and 40 cm (30 cm was also included in 1986). Treatments were imposed at either silking or two weeks after silking by thinning the stand from 10-cm spacing to either 20 or 40-cm spacings in order to determine the response of kernel yield and related characters to changing densities.