进行温室实验检测玉米抽雄期和抽雄后对水分胁迫的反应,并比较几个水分胁迫指标。简易省时的黎明前叶水势测定与其它水分胁迫指标测定相当。建议在灌溉计划中,将黎明前叶水势做为一个适宜的诊断指标,这尤适于需在临界期短期溉灌的作物。 Greenhouse experiments were conducted to test the response to water stress during tasseling stage and tasselling stage in maize and to compare several water stress indicators. Simple time-saving before dawn water potential and other water stress indicators measured. It is recommended that the water potential of the pre-dawn leaf be used as an appropriate diagnostic indicator in irrigation schemes, which is especially suitable for crops requiring irrigated short-term irrigation at the critical period.