To investigate the impact of anaerobic soil disinfestation(ASD)treatment with different processing dura-tion on tomato continuous cropping soil,a total of eight treatments were designed,which included two treatment temperatures of 10℃and 30℃,and four treatment times of 3,4,5 and 7 weeks(w).The results showed that whether the temperature was 10℃or 30℃,the pH values,TOC and available K contents in the soil treated by the ASD method were significantly increased(P<0.05),while the EC values and NO3-contents in soils treated by ASD were significantly reduced compared with the untreated group(P<0.05).The Fusarium oxysporum population in soils treated by ASD decreased with the extension of the treatment time.When the treatment temperature was 30℃,the effect on the removal of the NO3-that had accumulated in soils treated by ASD was significantly better than the treatment temperature of 10℃(P<0.05).When soil was treated by ASD for more than 5 w at 30℃,the NH4+content in soil was significantly increased(P<0.05)compared with the untreated soil.In conclusion,NO3-ac-cumulation in soils could not be completely eliminated with treatment by ASD,even when the treatment time at 10℃was prolonged.Whether the treatment temperature was 10℃or 30℃,the F.oxysporum population in soils treated by ASD decreased significantly with the extension of the treatment time to more than 5 w compared with treatment only for only 3 w.
关键词
厌氧土壤消毒/番茄/连作障碍/处理时间
Key words
anaerobic soil disinfestation/tomato/continuous cropping soil/treatment time
万方数据