分根灌水对玉米根系活力及叶片含水量的影响

采用交替分根和固定分根处理方法 ,比较分根灌水预处理对玉米根系活力和叶片含水量的影响结果表明 ,交替分根灌水处理对玉米叶片含水量及质膜透性和根系活力及质膜透性的影响较小 ,其保水效果优于固定分根灌水处理。根系活力和质膜透性与叶片含水量分别呈显著正相关和负相关 ,维持根系活力与保持较高的叶片含水量有密切关系。

Effects of roots-divided irrigation on root vitality and leave water content in maize

The alternative roots-divided irrigation and fixed roots-divided irrigation were used to compare the effects of roots-divided irrigation pretreatment on root vitality and leave water content of maize in this experiment. The results show that the roots-divided irrigation has no marked influence on the relative water content, plasma membrane permeability and vitality of roots. The alternative roots-divided irrigation has better water-containing effects than the fixed roots-divided irrigation. The root vitality and plasma membrane permeability are positively and negatively related to the leave water con- tent , therefore maintaining the root vitality is closely associated with keeping higher leaf water content in maize.