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| Effects of Applying Soil Conditioner on Soil Arsenic Uptake by Eruca sativa Mill.var. sativa in Acidic Soil |
| TANG Ruo-tong1，LI Ge-wei2，SUN Run-ze1，FAN Bing-qian1，CHEN Qing1* |
| 1Beijing Key Laboratory for Controlling & Renovating Soil Pollution in Farm Land，College of Resources and Environmental Sciences，China Agricultural University，Beijing 100193，China；2Erdos Yiding Ecological Agriculture Development Co.，Ltd.，Erdos 017419，Inner Mongolia，China |
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Abstract Excessive manure application in vegetable protected fields may cause arsenic（As）accumulation in soil．Optimum soil conditioner application can inhibit As uptake by plant and achieve safe vegetable production．This study selected 3 kinds soil conditioner，including Yiding soil conditioner（YC），compound fertilizer of calcium silicon magnesium potassium（CSMP），woody peat（WP）；conducted a pot experiment by acid soil to investigate the influences of different applying rates（1.3 g · kg-1 and 13 g · kg-1）on soil As stabilization effect and As uptake by Eruca sativa Mill. var. sativa．Results showed that the application of 13 g · kg-1 YC and CSMP could significantly increase soil pH，while the application of 13 g·kg-1 WP could significantly increase the soil organic carbon content．The application of 1.3 g · kg-1 WP could significantly decrease the As content by 5.17% in soil．Compared with the control treatment without adding any soil conditioner，these 3 soil conditioners could promote the growth of Eruca sativa Mill. var. sativa．YC application at the rate of 1.3 g · kg-1 could obtain the highest shoot fresh weight of Eruca sativa Mill. var.sativa，which was significantly increased by 51.3%．Additionally，the application of all soil conditioners could remarkably decrease the As contents in shoot of Eruca sativa Mill. var. sativa．
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Received: 07 August 2019
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