Effects of biochar supplementation on the behavior of pathogens in soil-plant System under unconventional water resources irrigation
CUI Er-ping, CUI Bing-jian, LIU Yuan, GAO Feng, FAN Xiang-yang, LI Zhong-yang
Key Laboratory of High-efficient and Safe Utilization of Agriculture Water Resources, Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China
In the present study, the experiments were conducted in greenhouse rhizoboxes, to evaluate the overall pathogen status in rhizosphere and bulk soil, and the root endosphere of maize after unconventional water resources irrigation (reclaimed water and piggery wastewater) and biochar supplementation using quantitative PCR method. The results showed that the irrigation time and soil type could significantly influence the collected soil samples. Compared with individual pathogen in rhizosphere and bulk soil under distilled water irrigation, the variation caused by reclaimed water irrigation was -0.74~0.17orders, and the value was -0.14~0.60 orders caused by piggery wastewater irrigation. The effects of biochar supplementation varied with irrigation resources and time, with the maximum reduction values were 0.35, 0.39 orders under the irrigation of reclaimed water and piggery wastewater. In addition, reclaimed water and piggery wastewater irrigation could increase pathogens in maize root by up to 1.17, 2.20 orders, and biochar supplementation increased them by up to 0.60, 1.08 orders, leading to potential health risks.
崔二苹, 崔丙健, 刘源, 高峰, 樊向阳, 李中阳. 生物炭对非常规水源灌溉下土壤-作物病原菌的影响[J]. 中国环境科学, 2020, 40(3): 1203-1212.
CUI Er-ping, CUI Bing-jian, LIU Yuan, GAO Feng, FAN Xiang-yang, LI Zhong-yang. Effects of biochar supplementation on the behavior of pathogens in soil-plant System under unconventional water resources irrigation. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(3): 1203-1212.
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