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| DOI：10.13522/j.cnki.ggps.20180692 |
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| Amending Soda Saline-alkali Paddy Soil with Biochar Improves Soil Nutrients and Rice Yield |
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RAN Cheng, SHAO Xiwen, ZHU Jing, ZHANG Siqi, WANG Xiaowei, WANG Wenlong, LI Jianbo, HAN Dong, LIU Xu, GENG Yanqiu, GUO Liying, LIU Lixin, JIN Feng
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College of Agriculture, Jilin Agricultural University, Changchun 130118, China
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| Abstract: |
| 【Objective】 One challenge facing rice growers in soda saline-alkali soil is poor soil nutrients and low yield. This paper presents the results of an experimental study on effectiveness of using biochar to ameliorate these constraints.【Method】 A two-year experiment (2017—2018) was conducted at Sheli Town in Baicheng City, Jilin Province; we used the variety of Changbai 9 as the model plant. The soil was amended with biochar at four levels: 0 t/hm2 (CK), 33.75 t/hm2 (C1), 67.5 t/hm2 (C2) and 101.25 t/hm2 (C3). For each treatment, we measured nutrients in 0~20 cm soil, as well as rice yield.【Result】 Amending the soda saline-alkaline soil with biochar significantly increased total nitrogen, available phosphorus, available potassium and organic matter (P<0.05), yet significantly reduced soil alkaline nitrogen and ammonium nitrogen contents in the top 0~20 cm soil. Compared to CK, C1, C2 and C3 also significantly increased rice yield and the harvest indices by 48.35%, 52.09% and 57.47% respectively; they also improved the panicle number, 1000-grain weight and seed establishing rate. 【Conclusion】Amendment of the soda saline-alkali soil with biochar can improve soil nutrients, thereby increasing yield. |
| Key words: biochar; saline-sodic stress; available nutrients; yield composition |
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