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《Journal of Agricultural Resources and Environment》 2017-06
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Effects of Dazomet Disinfection on Watermelon Continuous Cultivation in Deep-litter Materials Substrate

ZHANG Jing;GUO De-jie;SONG Xiu-chao;MA Yan;Institute of Agricultural Resource and Environment,Jiangsu Academy of Agricultural Sciences;  
An experiment was conducted to study the effects of a soilless substrate composed mainly of deep-litter materials on watermelon cultivation and the effects of cultivation on physicochemical and microbiological properties of this substrate.The reuse effect of old substrate after disinfection was also studied.The results showed that replant obstacle would occur if old substrate was used to continue growing watermelon and the incidence of fusarium wilt could reach 35% during the whole growth period.The number of Fusarium oxysporum in the substrate increased from 0 to 8.0 ×10~3 cfu·g~(-1) after continuously two-crops growing of watermelon.The number of fungi and Fusarium oxysporum were significantly reduced in the substrate used once after dazomet disinfection.There was no significant differences in fruit weight and total yield when continue growing watermelon in disinfection substrate compared with in new substrate.
【Fund】: 江苏省农业科技自主创新资金项目(CX(15)1003-9);; 设施蔬菜化肥农药减施增效技术集成研究与示范项目(2016YFD0201000);; 江苏省博士后科研资助项目(1501119B)
【CateGory Index】: S651
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