摘要
通过盆栽方法研究了在水分胁迫下土壤保水剂对甘蔗抗旱性的影响。结果表明,施用保水剂后,土壤含水量、叶片相对含水量增加,叶片质膜透性、脯氨酸含量、丙二醛含量减少。t测验和各性状的变幅结果表明,施用保水剂后,抗旱性越弱的品种效果越明显。相关分析表明,土壤含水量和叶片相对含水量的增加是土壤保水剂增强甘蔗抗旱力的根本原因。
Effect of water-holding agent on drought resistance in sugarcane was studied in the pot experiment under drought stress. Results showed that the application of water-holding agent significantly improved soil water content, relative leaf water content, and significantly decreased plasma membrane permeability, proline content and malondiadehyde content. T-test and variation range results showed that the poorer the drought-resistance was, the better the applied effect was. Correlation analysis results showed that increase in soil water contents and relative water contents of leaves was primary causes of increase in the drought resistance of sugarcane after the application of water-holding agent.
关键词
土壤保水剂
甘蔗
抗旱性
品种
叶片
water-holding agent
sugarcane
drought resistance
