摘要
为探讨温度对厌氧土壤消毒处理消除连作障碍因子的影响,以番茄连作土壤为研究对象,设置5个处理:对照、10℃、20℃、30℃和40℃处理,置于生化恒温培养箱内,密封处理3周。结果表明,不同温度ASD处理均可使土壤pH显著升高、EC显著降低,土壤有机碳(TOC)、速效钾含量显著增加,低温(小于10℃)ASD处理不能完全消除土壤累积的NO_(3)^(-),高温(40℃)ASD处理中NH_(4)^(+)含量显著升高;不同温度ASD处理中细菌数量显著增加,高温(40℃)ASD处理中真菌、尖孢镰刀菌数量均显著降低。可见,高温(40℃)ASD处理效果最好,不同温度ASD处理均显著提高土壤TOC、速效钾含量。
To explore the influence on the removal of obstacle factors in continuous cropping soil treated by anaerobic soil disinfestation(ASD)under different treating temperature,taking tomato continuous cropping soil as the research object,five soil treatments were set up as the following:control(CK)、treated by ASD at 10℃,20℃,30℃and 40℃,respectively,which were all sealed and treated in biochemical incubator for 3 weeks.The results showed that soil pH values were significantly increased and EC values decreased by ASD treatment at different temperatures,and the contents of soil organic carbon(TOC)and available K increased significantly.Effect on elimination NO_(3)^(-) contents in soils treated by ASD were poor at low temperature(≤10℃),while the NH_(4)^(+) contents in soils treated by ASD significantly increased at high temperature(40℃).The number of bacteria in soils treated by ASD significantly increased at different temperatures.The number of fungi and Fusarium oxysporum in soils treated by ASD at high temperature(40℃)were significantly decreased.In conclusion,the best effect occurred in soil treated by ASD at high temperature(40℃),and the contents of TOC and available K in soil treated by ASD were significantly increased at different temperatures.
作者
周开胜
ZHOU Kaisheng(Civil and Hydraulic Engineering College,Bengbu University,Bengbu 233030,China)
出处
《长春师范大学学报》
2024年第4期82-86,114,共6页
Journal of Changchun Normal University
基金
安徽省高校学科(专业)拔尖人才学术资助项目(gxbjZD2022077)
高层次人才科研启动经费项目“基于强还原法的土壤环境治理与修复研究”(BBXY2021KYQD09)
农田生态保育与污染防控安徽省重点实验室开放基金项目“基于番茄枯萎病防治的RSD土壤修复研究”(FECPP201901)。
关键词
处理温度
厌氧土壤消毒
连作障碍
treated temperature
anaerobic soil disinfestation
continuous cropping obstacle
