Effects of Wheat Straw Hydrochar and Its Modified Product on Rice Yield and Ammonia Volatilization from Paddy Fields

被引：0

作者：

Han C. ^{[1
,2
]}

Hou P.-F. ^{[2
,3
]}

Xue L.-H. ^{[1
,2
,3
]}

Feng Y.-F. ^{[1
,2
,3
]}

Yu S. ^{[2
]}

Yang L.-Z. ^{[1
,2
]}

机构：

[1] College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing

[2] Key Laboratory of Agricultural Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing

[3] School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang

来源：

Huanjing Kexue/Environmental Science | 2021年 / 42卷 / 07期

关键词：

Agricultural biowaste; Ammonia volatilization; Hydrothermal carbonization; Rice; Yield;

D O I：

10.13227/j.hjkx.202010086

中图分类号：

学科分类号：

摘要：

Hydrochar can mitigate ammonia volatilization when applied in paddy fields due to its acidity and adsorption property. To realize the recycling of agricultural biowaste as well as the control of nutrient loss from paddy fields, a simulation soil-column experiment with wheat straw hydrochar (WHC) and water-washed hydrochar (W-WHC) was conducted to evaluate the performance of rice yield and ammonia volatilization from paddy fields. The results showed that WHC and W-WHC applied in paddy fields both increased the rice yield and the increased effect at low application rate (0.5%) was higher than that at high application rate (1.5%). In comparison with the control treatment (CKU), the rice yields achieved from low application rate treatments for WHC and W-WHC increased by 17.16% and 20.20% respectively. Except for the equal emission rate between W-WHC with low application rate and CKU treatments, hydrochar (WHC, W-WHC) addition reduced the ammonia volatilization from paddy fields when compared with the CKU. Among them, the ammonia volatilization levels from low-application WHC and high-application W-WHC treatments were significantly lower than that from the CKU treatment, reduced by 31.01% and 17.40%, respectively. Based on the analysis of ammonia volatilization during different fertilization stages, the control effect of hydrochar addition on ammonia volatilization was mainly benefited from tillering and panicle fertilizer stages. The change in the nitrogen concentration of surface water at the tillering fertilizer stage and in pH at the panicle fertilizer stage with the addition of hydrochar was the main driving factor for the reduction in ammonia volatilization. The results show that sufficient amounts of hydrochar derived from wheat straw application can increase crop yield while reducing ammonia volatilization from paddy fields. This method provides an effective route for recycling agricultural biowastes. © 2021, Science Press. All right reserved.

引用

页码：3451 / 3457

页数：6

共 36 条

[1] Seck P A, Diagne A, Mohanty S, Et al., Crops that feed the world 7: rice, Food Security, 4, 1, pp. 7-24, (2012)
[2] Goulding K, Jarvis S, Whitmore A., Optimizing nutrient management for farm systems, Philosophical Transactions of the Royal Society B: Biological Sciences, 363, 1491, pp. 667-680, (2008)
[3] Ju X T, Zhang F S., Thinking about nitrogen recovery rate, Ecology and Environment, 12, 2, pp. 192-197, (2003)
[4] Hou P F, Xue L X, Yu Y L, Et al., Control effect of side deep fertilization with slow-release fertilizer on ammonia volatilization from paddy fields, Environmental Science, 38, 12, pp. 5326-5332, (2017)
[5] Yu Y L, Wang M F, Yang B, Et al., Effects of film materials on ammonia volatilization emissions from a paddy system after reducing nitrogen fertilizer application, Environmental Science, 42, 1, pp. 477-484, (2021)
[6] Yu S, Xue L H, Feng Y F, Et al., Hydrochar reduced NH<sub>3</sub> volatilization from rice paddy soil: Microbial-aging rather than water-washing is recommended before application, Journal of Cleaner Production, 268, (2020)
[7] Xue L H, Yu Y L, Yang L Z., Maintaining yields and reducing nitrogen loss in rice-wheat rotation system in Taihu Lake region with proper fertilizer management[J], Environmental Research Letters, 9, 11, (2014)
[8] Wang H L, Cao X D, Rinklebe J., Biochar effects on environmental qualities in multiple directions, Chemosphere, (2020)
[9] Baiamonte G, Crescimanno G, Parrino F, Et al., Effect of biochar on the physical and structural properties of a sandy soil, CATENA, 175, pp. 294-303, (2019)
[10] Wang A J, Che L K, Dong R J, Et al., Study on characteristics of ammonium nitrogen adsorption by biochar prepared in different temperature, Advanced Materials Research, 724-725, pp. 452-456, (2013)

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