抗盐碱剂对盐碱胁迫条件下双季稻渗透调节物质及根系活力的影响  

Effects of Saline-alkali Resistant Agents on Osmotic Adjustment Substances and Root Activity of Double-cropping Rice under Saline-alkali Stress

作　　者：祝海竣 李丹妮 张听 文天 文璨 王学华[1,2,3] ZHU Hai-jun;LI Dan-ni;ZHANG Ting;WEN Tian;WEN Cai;WANG Xue-hua(College of Agriculture,Hunan Agricultural University,Changsha 410128,China;Southern Grain and Oil Crops Collaborative Innovation Center,Changsha 410128,China;Key Laboratory of Ministry of Education for Crop Physiology and Molecular Biology,Changsha 410128,China)

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]南方粮油作物协同创新中心,湖南长沙410128 [3]教育部作物生理与分子生物学重点实验室,湖南长沙410128

出　　处：《土壤通报》2022年第5期1098-1105,共8页Chinese Journal of Soil Science

基　　金：国家重点研发计划(2017YFD0301501);“十三五”国家重点研发计划(2018YFD0301005)资助。

摘　　要：【目的】为筛选合适的抗盐碱剂供盐碱地水稻生产应用。【方法】本研究以早稻品种陵两优942和晚稻品种Y两优911为材料,采用盆栽土培法研究了几种抗盐碱剂(T_(1)微纳米硅、T_(2)矿源黄腐酸钾、T_(3)盐碱、T_(4)松土精+矿源黄腐酸钾)对盐碱胁迫条件下(CK_(1)盐碱胁迫、CK_(2)无盐碱胁迫)水稻渗透调节物质、根系活力及产量的影响。【结果】水稻的SPAD值、渗透调节物质、根系活力和产量会受到盐碱胁迫的显著影响,中度胁迫造成的影响高于轻度胁迫造成影响;施用抗盐碱剂有利于缓解盐碱胁迫的不利影响,且在盐碱胁迫较重时效果更明显。在中度盐碱胁迫下,与CK_(1)相比,施用抗盐碱剂T_(1)、T_(2)、T_(3)、T_(4),叶片SPAD、根系活力、产量显著增加,叶片游离脯氨酸含量、可溶性糖含量显著下降;与CK_(2)相比,CK_(1)减产40.8%,施用抗盐碱剂则使Y两优911在盐碱胁迫条件下减产幅度显著减小,T_(1)、T_(4)、T_(3)、T_(2)分别比CK_(1)产量高出53.9%、31.1%、21.1%、16.3%。【结论】不同处理间综合表现以T_(1)(微纳米硅)和T_(4)处理(松土精+矿源黄腐酸钾)表现最佳,是盐碱地水稻增产增收的有效措施。[Objective]The suitable saline-alkali resistant agents were screened for rice production in saline-alkali soil.[Methods]The early rice variety Lingliangyou 942 and late rice variety Yliangyou 911 were taken as materials,the effects of several saline-alkali resistant agents(T_(1) micro-nano silicon,T_(2) mineral source fulvic acid potassium,T_(3) saline-alkali,T_(4) Soilfix IR+mineral source fulvic acid potassium)on osmotic adjustment substances,root activity and yield of rice under saline-alkali stress(CK_(1) saline-alkali stress and CK_(2) non-saline-alkali stress)were studied by pot culture method.[Results]The results showed that the SPAD value,osmotic adjustment substance,root activity and yield of rice were affected by saline-alkali stress,and the effect caused by moderate stress was higher than that caused by mild stress.Application of saline-alkali resistant agents was beneficial to alleviate the effect of saline-alkali stress,and the effect was more significant when saline-alkali stress was serious.Under moderate saline-alkali stress,compared with CK_(1),SPAD value,root activity,and yield of leaves were significantly increased when T_(1),T_(2),T_(3),and T_(4) were applied,while free proline content and soluble sugar content of leaves decreased significantly.Compared with CK_(2),the yield of CK_(1) decreased by 40.8%,and the yield of Yliangyou 911 was significantly reduced under saline-alkali stress by applying salt-alkali resistant agents.The yields of T_(1),T_(4),T_(3),and T_(2)were higher than those of CK_(1) by 53.9%,31.1%,21.1%,and 16.3%,respectively.T_(1) and T_(4) had the best comprehensive performance among different treatments.[Conclusion]The application of T_(1) and T_(4) is an effective measure to increase rice yield and income in saline-alkali soil.

关 键 词：水稻 盐碱胁迫 抗盐碱剂 渗透调节 

分 类 号：S511[农业科学—作物学]