摘要
土壤盐渍化是农业发展和生态环境保护的重要障碍因子,通过改良剂和新型材料配施改善盐渍土及减少盐胁迫的危害是一种可行的方法。设置不施肥(CK)、单施化肥(CF)、CF+有机肥(CFM)、CFM+不同用量氯化胆碱(CFMC1、CFMC2、CFMC3)、CFM+鼠李糖脂(CFMS1)、CFM+氯化胆碱+不同用量鼠李糖脂(CFMC2S1、CFMC2S2、CFMC2S3)共10种处理,研究有机肥配施鼠李糖脂和氯化胆碱对盐渍化土壤理化性质及番茄生长发育和耐盐性的影响。结果表明,CFM、CFMC1、CFMC2、CFMC3、CFMS1、CFMC2S1、CFMC2S2和CFMC2S3处理均可改良土壤环境,降低土壤pH和土壤钠吸附比。有机肥配施氯化胆碱和鼠李糖脂能提高番茄的耐盐性,与CFM处理相比,丙二醛含量和超氧阴离子产生速率分别降低2.81%~26.76%、9.52%~42.86%;过氧化物酶活性和脯氨酸含量分别增加1.39%~27.78%、5.15%~31.17%;叶片K^(+)含量升高1.29%~21.03%;Na^(+)含量降低2.16%~14.59%。番茄的光合作用增强且果实品质和产量增加,与CFM处理相比,有机肥配施氯化胆碱和鼠李糖脂后,果实的可溶性糖、维生素C含量、产量分别增加2.94%~20.59%、3.42%~12.43%、8.90%~33.81%;叶绿素含量和净光合速率分别提高3.85%~38.46%、2.40%~42.51%。在中度盐渍化土壤中,添加有机肥15000 kg·hm^(-2)且配施9 kg·hm^(-2)氯化胆碱和0.72 kg·hm^(-2)20%的鼠李糖脂效果最佳。综合看来,有机肥配施鼠李糖脂和氯化胆碱在一定程度上能缓解盐胁迫对番茄的危害,促进番茄生长,增加其耐盐性。研究结果为盐渍土改良和番茄优质高产提供参考。
Soil salinization is an important obstacle factor for agricultural development and ecological environment protection,and it is a feasible method to improve saline soil and reduce the harm of salt stress through the formulation and application of amendments and new materials.10 treatments including no fertilizer(CK),chemical fertilizer(CF),CF+organic fertilizer(CFM),CFM+different dosage of choline chloride(CFMC1,CFMC2,CFMC3),CFM+rhamnolipids(CFMS1),and CFM+choline chloride+different dosage of rhamnolipids(CFMC2S1,CFMC2S2,CFMC2S3)were setting.The effects of organic fertilizers with rhamnolipid and choline chloride on the physicochemical properties of salinized soil and the growth and development of tomato and salt tolerance were studied.The results showed that CFM,CFMC1,CFMC2,CFMC3,CFMS1,CFMC2S1,CFMC2S2 and CFMC2S3 treatments could improve the soil environment,and reduce the soil pH and soil sodium adsorption ration.Organic fertilizer combined with choline chloride and rhamnoolide could improve the salt tolerance of tomato,and compared with CFM treatment,the content of malondialdehyde and the superoxide anion production rate decreased by 2.81%~26.76%and 9.52%~42.86%,respectively;peroxidase activity and proline content increased by 1.39%~27.78%and 5.15%~31.17%,respectively;leaf K^(+)content increased by 1.29%~21.03%,and Na^(+)content decreased by 2.16%~14.59%.Tomato photosynthesis was enhanced and fruit quality and yield increased,compared with CFM treatment,soluble sugar,vitamin C content and yield of fruits increased by 2.94%~20.59%,3.42%~12.43%and 8.90%~33.81%,respectively,chlorophyll content and net photosynthetic rate increased by 3.85%~38.46%and 2.40%~42.51%,respectively.In moderately saline soil,the best effect was achieved when organic fertilizer was added at a rate of 15000 kg·hm^(-2) with 9 kg·hm^(-2) choline chloride and 0.72 kg·hm^(-2)20%rhamnolipid.In conclusion,the application of organic fertilizer with rhamnolipid and choline chloride could reduce the harm of salt stress on tomato,promote the growth of tomato,and increase its salt tolerance to a certain extent.Above results provided a reference for the improvement of saline soil and high quality and high yield of tomato.
作者
寇威
刘佳月
户可欣
高铱遥
许世奇
何彦臻
王旭东
KOU Wei;LIU Jiayue;HU Kexin;GAO Yiyao;XU Shiqi;HE Yanzhen;WANG Xudong(College of Resource and Environment,Northwest A&F University,Shaanxi Yangling 712100,China;Key Laboratory of Plant Nutrition and Agri-environment in Northwest China,Ministry of Agriculture and Rural Affairs,College of Resource and Environment,Northwest A&F University,Shaanxi Yangling 712100,China)
出处
《中国农业科技导报(中英文)》
北大核心
2025年第8期202-214,共13页
Journal of Agricultural Science and Technology
基金
陕西省重点研发计划项目(2022ZDLNY0205)
内蒙古鄂尔多斯市重大项目(TG20220520)。
关键词
盐渍土
有机肥
氯化胆碱
鼠李糖脂
番茄
saline soil
organic fertilizer
choline chloride
rhamnoolipid
tomato
