强还原处理对连作设施大棚土壤的影响  

Effect of Strong Reduction Treatment on Continuous Cropping Soil in Facility Greenhouses

作　　者：李小强 赵伟[2] 陈金丽[2] 蒋丽媛[2] 朱熠辉 田霄鸿[3] LI Xiaoqiang;ZHAO Wei;CHEN Jinli;JIANG Liyuan;ZHU Yihui;TIAN Xiaohong(Fuping County Agricultural Technology Extension Center,Fuping,Shaanxi 711700,China;Weinan Agricultural Technology Extension Center,Weinan,Shaanxi 714000,China;College of Natural Resources and Environment,Northwest A&F University,Yangling,Shaanxi 712100,China)

机构地区：[1]富平县农业技术推广中心,陕西富平711700 [2]渭南市农业技术推广中心,陕西渭南714000 [3]西北农林科技大学资源环境学院,陕西杨凌712100

出　　处：《陕西农业科学》2024年第12期84-86,共3页Shaanxi Journal of Agricultural Sciences

摘　　要：多年连作造成土壤盐渍化、硝态氮累积等问题,已制约了设施蔬菜的可持续发展。该研究通过在设施蔬菜种植间歇期,以强还原方法处理土壤,调查对比处理前后土壤pH、电导率、总盐分和硝态氮的变化。结果表明,0~20 cm土层土壤电导率、pH和土壤总盐分含量分别降低30.3%~52.4%、5.2%~7.6%和66.6%~81.2%,20~40 cm分别降低了32.2%~53.6%、3.4%~6.6%和66.3%~80.6%。0~40 cm土层土壤硝态氮含量降低了89.9%~94.5%,其中0~20 cm土层土壤硝态氮含量从359~548 kg/hm^(2)降到7~25 kg/hm^(2),20~40 cm土层从206~302 kg/hm^(2)降到27~59 kg/hm^(2)。综上可述,强还原土壤处理法可有效降低土壤pH、电导率、总盐分和硝态氮含量,改善土壤环境,为解决多年连作设施大棚土壤问题提供技术支撑。Soil salinization and accumulation of nitrate nitrogen caused by years of continuous cropping have become major constraints to the sustainable development of facility vegetable production.This study investigated the effects of strong reduction treatment during fallow periods on soil properties,including pH,electrical conductivity(EC),total salt content,and nitrate nitrogen concentrations.The results showed significant improvements in soil quality.In the 0~20 cm soil layer,EC,pH,and total salt content decreased by 30.3%to 52.4%,5.2%to 7.6%,and 66.6%to 81.2%,respectively.Corresponding reductions in the 20~40 cm soil layer were 32.2%to 53.6%,3.4%to 6.6%,and 66.3%to 80.6%,respectively.The nitrate nitrogen content in the 0~40 cm soil layer decreased by 89.9%to 94.5%.In the 0~20 cm soil layer,it decreased from 359~548 kg/hm^(2) to 7~25 kg/hm^(2),while in the 20~40 cm layer,it decreased from 206~302 kg/hm^(2) to 27~59 kg/hm^(2).In conclusion,the strong reduction treatment effectively lowers soil pH,EC,total salt,and nitrate nitrogen levels,thereby improving the soil environment.This method provides viable technical support for mitigating soil degradation associated with long-term continuous cropping in facility greenhouses.

关 键 词：设施大棚 土壤 强还原处理 硝态氮 

分 类 号：S626[农业科学—园艺学]