最新录用：生物炭不同添加量对旱作覆膜农田土壤团聚体特性及有机碳含量的影响

doi:10.3864/j.issn.0578-1752.220307

中国农业科学

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最新录用：生物炭不同添加量对旱作覆膜农田土壤团聚体特性及有机碳含量的影响

庞津雯^1,2，王钰皓^1,2，陶宏扬¹，卫婷^1,2，高飞³，刘恩科⁴，贾志宽^1,2，张鹏^1,2

¹西北农林科技大学农学院，陕西杨凌 712100；²农业农村部西北黄土高原作物生理生态与耕作重点实验室，陕西杨凌 712100；³甘肃省耕地质量建设保护总站，兰州 730020；⁴中国农业科学院农业环境与可持续发展研究所，北京 100081

发布日期:2022-07-12

Effects of Different Biochar Application Rates on Soil Aggregate Characteristics and Organic Carbon Contents for Film-Mulching Field in Semiarid Areas

PANG JinWen^1,2, WANG YuHao^1,2, TAO HongYang¹, WEI Ting^1,2, GAO Fei³, LIU EnKe⁴, JIA ZhiKuan^1,2, ZHANG Peng^1,2* #br#

¹College of Agronomy, Northwest A & F University, Yangling 712100, Shanxi; ²Key Laboratory of Crop Physiology, Ecology and Farming in Northwest Loess Plateau, Ministry of Agriculture and Rural Affairs, Yangling 712100, Shanxi; ³Gansu Cultivated Land Quality Construction and Protection Station, Lanzhou 730020; ⁴Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081

Online:2022-07-12

摘要/Abstract

摘要： 【目的】研究西北旱作区长期地膜覆盖农田添加不同量生物炭对土壤团聚体稳定性和有机碳含量的影响，为旱作覆膜农田地力提升、作物的可持续生产提供一定科学依据。【方法】在连续多年双垄沟覆膜农田基础上，采用裂区设计，主区为全膜双垄沟覆盖种植和传统平作不覆膜种植2个处理，副区为生物炭添加水平，分别为不添加（N）、低量添加（L）：3 t·hm^-2、中量添加（M）：6 t·hm^-2和高量添加（H）：9 t·hm^-2。测定生物炭不同添加量对覆膜农田土壤团聚体不同粒级含量、团聚体稳定性、团聚体有机碳含量及玉米产量的影响。【结果】生物炭连续添加两年后，各覆膜处理能显著提高0—60 cm土层土壤大粒级（>0.25 mm）团聚体的机械稳定性（6.1%—8.7%）及水稳性团聚体的百分含量（15.9%—83.6%），玉米产量可显著（P<0.05）提高35.0%—41.8%。在覆膜条件下，添加生物炭能显著提高土壤大粒级团聚体百分含量及其稳定性，干筛>0.25 mm 粒级团聚体含量（MR_0.25）和湿筛>0.25 mm 粒级团聚体含量（WR_0.2₅）分别平均提高6.8%和29.6%，且随生物炭添加量的增加增幅逐渐增大。此外，生物炭添加提高了覆膜农田土壤有机碳及团聚体有机碳含量，其中以高量添加（9 t·hm^-2）效果最好，分别提高13.9%和25.9%。玉米产量与生物炭添加量显著相关（λ=0.42，P<0.001），且在覆膜条件下产量最大（12.8 t·hm^-2）。【结论】生物炭添加可提高覆膜农田土壤团聚体含量及稳定性，增加玉米产量，还可以显著增加有机碳含量，促进有机碳固存，且添加量为9 t·hm^-2时效果较好。

关键词: 地膜覆盖, 生物炭, 团聚体特性, 有机碳, 旱作农田

Abstract: 【Objective】Studying the effects of long-term plastic film mulching farmland combined with different biochar inputs rates on soil aggregate stability and organic carbon in northwest China, in order to provide a scientific basis for improving the soil fertility and maintaining the sustainability of crop production for film-mulching field in semiarid regions. 【Method】Based on continuous years of double ridge furrow film mulching (D), full film double ridge furrow mulching planting and traditional flat without film mulching planting were set as the main treatment, four biochar input rates (no returning (N), 3 t·hm^-2(L), 6 t·hm^-2(M), and 9 t·hm^-2(H) ) were set as the secondary treatment respectively to investigate the effects of different biochar inputs rates on soil aggregate distribution, aggregate stability, aggregate organic carbon and maize yield.【Result】The results showed that the film mulching can significantly (P<0.05) increase the soil mechanically stable (6.1%-8.7%) and water-stable (15.9%-83.6%) macro-aggregate contents and maize yield (35.0%-41.8%). Under the film mulching planting, biochar inputs treatments could significantly (P<0.05) increase mechanically macro-aggregate and water macro-aggregate by 6.8% and 29.6% on average, respectively, and the effects gradually increased with the increase of biochar inputs rate. In addition, biochar inputs could also increase the soil organic carbon and aggregate organic carbon content in film mulching farmland, and the effects under DH (9 t·hm^-2) were the better than other treatments, with an average increased by 13.9% and 25.9%, respectively. Maize yield was significantly correlated with biochar addition rates ( λ=0.42, P<0.001 ), and DH had the highest yield with 12.8 t·hm^-2. 【Conclusion】Biochar input can significantly improve soil aggregrate characteristics and organic carbon content in plastic film mulching farmland, thus increase the maize yield and promote soil carbon sequestration, especially with 9 t·hm^-2.

Key words: film mulching, biochar, soil aggregate characteristic, soil organic carbon, dryland

庞津雯, 王钰皓, 陶宏扬, 卫婷, 高飞, 刘恩科, 贾志宽, 张鹏, . 最新录用：生物炭不同添加量对旱作覆膜农田土壤团聚体特性及有机碳含量的影响[J]. 中国农业科学, 0, (): 1-.

PANG JinWen, WANG YuHao, TAO HongYang, WEI Ting, GAO Fei, LIU EnKe, JIA ZhiKuan, ZHANG Peng, . Effects of Different Biochar Application Rates on Soil Aggregate Characteristics and Organic Carbon Contents for Film-Mulching Field in Semiarid Areas[J]. Scientia Agricultura Sinica, 0, (): 1-.

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最新录用：生物炭不同添加量对旱作覆膜农田土壤团聚体特性及有机碳含量的影响

Effects of Different Biochar Application Rates on Soil Aggregate Characteristics and Organic Carbon Contents for Film-Mulching Field in Semiarid Areas

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