EFFECT OF VARIOUS LEVELS OF BIOCHAR INCORPORATION ON SOYBEAN YIELDS, PHYSICAL QUALITY AND NITRIFYING BACTERIA OF BLACK SOIL IN NORTHEAST CHINA
文献类型： 外文期刊
作者： Jin, L. 1 ; Wei, D. 1 ; Yin, D. 3 ; Zhou, B. 2 ; Li, Y. 2 ; Wang, W. 2 ; Zhang, J. 2 ; Yu, S. 4 ; Jiang, Y. 5 ; Li, Y. 2 ; Cai, S. 2 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Plant Nutr & Resources Inst, Beijing 100097, Peoples R China
2.Heilongjiang Acad Agr & Sci, Soil Fertilizer & Environm Resource Inst, Key Lab Soil Environm & Plant Nutr Heilongjiang P, Harbin 150086, Heilongjiang, Peoples R China
3.Heilongjiang Bayi Agr Univ, Coll Agr Sci & Technol, Daqing 163319, Heilongjiang, Peoples R China
4.Heilongjiang Acad Agr Sci, Inst Crop Cultivat & Tillage, Harbin 150027, Heilongjiang, Peoples R China
5.Heilongjiang Acad Agr & Sci, Heihe Branch, Heihe 164300, Heilongjiang, Peoples R China
6.Northeast Agr Univ, Coll Resources & Environm, Harbin 150030, Heilongjiang, Peoples R China
7.Shenyang Agr Univ, Coll Land & Environm, Shenyang 110866, Liaoning, Peoples R China
关键词： maize-derived biochar; application levels; physical properties; field experiment; black soil
期刊名称：APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH （ 影响因子：0.711； 五年影响因子：0.796 ）
ISSN： 1589-1623
年卷期： 2019 年 17 卷 6 期
页码：
收录情况： SCI
摘要： Maize-straw biochar (BC) was applied in a black soil area in Northeast China for investigating its effects on crop yield, soil physical properties and nitrifying bacteria. In this study, BC forms BC1, BC2 and BC3 were incorporated at levels of 15.75, 31.50 and 47.25 t ha(-1), respectively, from 2013 to 2014. The control soil was treated with chemical fertilizer (NPK). The results showed that yields of soybean were significantly improved overall due to BC applications, compared with the control. Meanwhile, average soil compaction values of 0 - 20 cm deep soil were decreased from 17.9% to 47.4%. Biochar supplementation decreased the soil wilting coefficients, but increased saturated water content. The available soil water content increased from 0.211 to 0.329 cm(3) cm(-3) (R-2 = 0.97), whereas the bulk density decreased from 1.42 to 1.40 g cm(-3) (R-2 = 0.97) in response to BC supplementation. Unexpectedly, soybean yields began to decline at 31.50 and 47.25 t ha(-1) of BC application. as well as soil aggregate stability, available water content, and capillary pores, mainly Moreover, the BC supplementation significantly affected soil ammonia-oxidizing archaea (AOA) abundance. These results demonstrate that BC has positive potential for enhancing crop and soil properties performances in black soil at the level of 15.75 t ha(-1) under continuous soybean system.
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