Ethephon and mapiquat chloride was mixed and then used for investigation of effects on the root exudates of summer corn cv.3315 in 1996.

• 研究结果表明:夏玉米根系伤流量在吐丝期前后达到高峰,其后随着植株的衰老成熟不断下降,伤流液中各种营养元素和内源激素流量基本与伤流量的变化趋势一致。