硝酸钙处理对低温下紫花苜蓿耐寒性及幼苗生长的影响

摘要

Attemperator and potted in door were employed in this study. The change of characteristics of leaves and cold tolerance of and treating with low temperature that were made by manpower. The result shows that Ca (NO3)2 decrease the content of chlorophyll and the LAI. Beside,it can improve the survival rate of seedlings.%采用温箱培养、室内盆栽的方法,通过50 mmol·L-1的Ca(NO3)2溶液浸种、叶面喷施及人工低温处理,研究了Ca(NO3)2对紫花苜蓿幼苗生长及抗寒能力的影响.试验结果表明:Ca(NO3)2降低了紫花苜蓿的叶绿素含量,提高了叶面积系数以及幼苗的成活率.