摘要
通过砂培实验,研究了3种保水剂在不同施用浓度下对玉米种子萌发、基质持水性以及幼苗抗旱性能的影响。结果表明:适宜浓度的保水剂能提高玉米种子发芽势、基质持水量,增强幼苗抗旱性。其中保水剂A质量浓度为0.20%、保水剂B质量浓度为0.25%、保水剂C质量浓度为0.25%时作用显著,但在保水剂质量浓度高于0.50%时会起到抑制作用。在相同浓度下3种保水剂效果为:保水剂B>保水剂A>保水剂C。
This paper studied the effects of 3 water retention agents and different concentrations on the germination of seed, vitality index, and water-retaining, as well as the seedling drought resistance of maize by planting in sands . The result shows suitable concentrations can improve potentiality of seed, vitality index, and water-retaining, and can enhance the seedling drought resistance. The optimum concentrations of water retention agents A,B and C are 0.20%, 0.25% and 0.25% respectively. While shows that under the same conditions, the effect of water retention agents is ：the water retention agent B〉A〉C.
基金
中国科学院兰州化学物理研究所资助
关键词
保水剂
玉米
种子萌发
抗旱
活力指数
water retention agents
maize
germination
drought resistance
vitality index
