摘要
本实验采用人工模拟熏气法,以CK(自然状态)、S1(1.5mg/L)、S2(2.25mg/L)、S3(3mg/L)、S4(3.75mg/L)5个SO2浓度水平,对4种暖季型草坪草——假俭草、结缕草、百喜草、狗牙根进行密闭熏气处理;进而测定4种草坪草生理生化指标;最终比较4种草坪草对SO2的抗性和净化能力。结果表明,4种草坪草叶绿素总量随SO2浓度增加呈降低趋势;可溶性糖、丙二醛、脯氨酸、超氧化物歧化酶、过氧化氢酶、过氧化物酶、叶片硫含量则随SO2浓度增加呈升高趋势;可溶性蛋白除狗牙根降低外其余均呈升高趋势。采用模糊数学隶属度公式进行综合相关分析得出,4种草坪草对SO2的抗性比较:狗牙根>结缕草>百喜草>假俭草;净化能力比较:结缕草>百喜草>狗牙根>假俭草。
The influence of sulfur dioxide(SO2) on four warm-season turfgrasses [centipedegrass(Eremochloa ophiuroides),zoysiagrass(Zoysia japonica),bahiagrass(Paspalum notatum),bermudagrass(Cynodon dactylon)] were studied using fumigation to apply five SO2 treatments: CK(Natural state),S1(1.5 mg/L),S2(2.25 mg/L),S3(3 mg/L) and S4(3.75 mg/L).There was a negative correlation between total chlorophyll and SO2 concentration but positive correlations between soluble protein,malondialdehyde,proline,peroxidase(POD),catalase(CAT),superoxide dismutase(SOD),leaf sulfur content and SO2 concentration;The soluble protein content increased except for bermudagrass.By the fuzzy membership function,the resistance of four turfgrasses to SO2 was in the order:bermudagrass 〉 zoysiagrass〉 bahiagrass〉 centipedegrass 〉 and the purif-ying ability was in the order: zoysiagrass〉bahiagrass〉bermudagrass〉centipedegrass.
出处
《草业学报》
CSCD
北大核心
2013年第1期225-233,共9页
Acta Prataculturae Sinica
基金
四川省应用基础项目(05JY009-007-4)资助