生物炭对非常规水源灌溉下土壤-作物病原菌的影响

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Abstract

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.

Key words： biochar unconventional water resources irrigation quantitative PCR pathogens

Received: 21 August 2019

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X713

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	Articles by authors
	CUI Er-ping
	CUI Bing-jian
	LIU Yuan
	GAO Feng
	FAN Xiang-yang
	LI Zhong-yang

Cite this article:

CUI Er-ping,CUI Bing-jian,LIU Yuan等. Effects of biochar supplementation on the behavior of pathogens in soil-plant System under unconventional water resources irrigation[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(3): 1203-1212.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I3/1203

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