中文摘要：

在典型干旱地区（兰州）,研究了专用土壤改良剂（YNEC）对早熟禾在盐胁迫下生理指标的影响。结果表明：施用YNEC土壤改良剂能够降低草地早熟禾叶片膜透性和丙二醛的含量,提高脯氨酸的含量,使草地早熟禾酶促防御系统活性变幅维持在较高范围的稳定水平（尤其SOD）,增强了草地早熟禾的抗盐性。从各项生理指标的相关性可以看出,盐胁迫下首先引起植物含水量的变化,进而导致脯氨酸、超氧化物歧化酶（SOD）和过氧化物酶（POD）活性等的一系列生理变化。该试验结果表明,YNEC土壤改良剂能调控,并降低土壤盐胁迫,提高草坪草在盐碱地的适应能力。

英文摘要：

In the typical arid region of Lanzhou,effects of special soil amendment（YNEC） on the physiological characteristics of Poa pratensis under salt stress were studied.The results showed that YNEC soil amendment reduced membrane permeability of Poa pratensis leaf and the content of malondialdehyde,increased proline content,and kept the variation of enzyme-recovery-system of PoaSpp.stay at a relatively high level,improved the salt-resistance ability of Poa pratensis.Drawing from the correlation among every physiological indexes,it was the water content that firstly changed,then a series of physiological changes followed including proline content,the activity of SOD and POD.It was suggested that YNEC soil amendment could regulate and reduce salt stress in soil,and improve the adaptability of turfgrass in saline-alkaline land.