Effects of Applying Biochar on Soil Structure and Soybean Yield on Slope Farmland in Black Soil Region

被引：0

作者：

Wei Y. ^{[1
,2
]}

Shi G. ^{[1
]}

Feng C. ^{[1
]}

Wu Y. ^{[3
,4
]}

Liu H. ^{[2
,5
]}

机构：

[1] School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin

[2] Key Laboratory of High Efficiency Utilization of Agricultural Water Resources, Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin

[3] Heilongjiang Agricultural Reclamation Survey and Research Institute, Harbin

[4] College of Forestry, Northeast Forestry University, Harbin

[5] School of Science, Northeast Agricultural University, Harbin

来源：

Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2019年 / 50卷 / 08期

关键词：

Biochar; Generalized soil structure index; Geometric mean diameter; Mean weight diameter; Soil three-phase structure distance index; Sustainability yield index;

D O I：

10.6041/j.issn.1000-1298.2019.08.034

中图分类号：

学科分类号：

摘要：

In order to find out the effects of applying biochar on soil structure, soil fertility and crop yield and its sustainability in the black soil region, the field runoff plot of 3° sloping farmland in the black soil region of Northeast China was taken as the research object, and a four-year observation was carried out. In 2015, according to the amount of biochar applied, five treatments of C0 (0 t/hm2), C25 (25 t/hm2), C50 (50 t/hm2), C75 (75 t/hm2), and C100 (100 t/hm2) were set. The treatments were applied as the same amount of biochar in 2016, 2017 and 2018. The results showed that the soil bulk density was decreased gradually with the increase of biochar application and the porosity was increased gradually, and the longer the application period was, the more obvious the effect was. The generalized soil structure coefficient (GSSI) of the four consecutive years was increased first and then decreased with the increase of biochar loading, the soil three-phase structure distance index (STPSD) was decreased first and then increased, and the maximum (minimum) value (98.31, 4.87) was obtained in the second year of C50 treatment. At the same time, the three-phase ratio of soil was the closest to the ideal state. the contents of macro-aggregates (R0.25), mean weight diameter (MWD) and geometric mean diameter (GMD) for four consecutive years were increased first and then decreased with the increase of biochar loading. The decreasing trend was the maximum in the C50 treatment in the second year. The soil available potassium and organic matter were increased gradually with the increase of biochar application for four consecutive years, and the soil available nitrogen and available phosphorus were increased first and then decreased. The highest increase of soil available nitrogen and available phosphorus in each year were C50 (46.1%, 76.6%), C50 (46.4%, 85.4%), C25 (33%, 100.7%) and C25 (23.9%, 103.2%). The application of biochar for four consecutive years can increase the yield of soybean and its components. In the second year, the C50 treatment increased the maximum yield, the yield was increased by 33.3%, and the yield was the most sustainable. The sustainability yield index (SYI) was 0.871. The research results can provide theoretical support for actual production. © 2019, Chinese Society of Agricultural Machinery. All right reserved.

引用

页码：309 / 320

页数：11

共 37 条

[1]

E Y., Xiong Y., Talking about the function and key points of returning straw to field, Agricultural Equipment Technology, 38, 5, (2012)

[2]

Liu H., Wei Y., Influence of soil erosion thickness on soil productivity of black soil and its evaluation, Transactions of the CSAE, 30, 20, pp. 288-296, (2014)

[3]

Gou M., Qu Z., Wang F., Et al., Progress in research on biochar affecting soil-water environment and carbon sequestration-mitigating emissions in agricultural fields, Transactions of the Chinese Society for Agricultural Machinery, 49, 7, pp. 1-12, (2018)

[4]

Kookana R.S., Sarmah A.K., Van Zwieten L., Et al., Biochar application to soil, Advances in Agronomy, 112, pp. 103-143, (2011)

[5]

Wu Y., Zhao Y., Liu H., Et al., Analysis and evaluation of influence of straw biochar on soil productivity of sloping land in black soil region, Transactions of the Chinese Society for Agricultural Machinery, 48, 7, pp. 247-256, (2017)

[6]

Piccolo A., Mbagwu J.S.C., Effects of different organic waste amendments on soil microaggregates stability and molecular sizes of humic substances, Annals of Laboratory Medicine, 34, 6, pp. 426-432, (2014)

[7]

Forbe M.S., Raison R.J., Skjemstd J.O., Formation, transformation and transport of black carbon (charcoal) in terrestrial and aquatic ecosystems, Science of the Total Environment, 370, 1, pp. 190-206, (2006)

[8]

Zu X., Liu X., Chen Y., Et al., Effects of biochar amendment on rapeseed and sweet potato yields and water stable aggregate in upland red soil, CATENA, 123, pp. 45-51, (2014)

[9]

Chen X., He X., Geng Z., Et al., Effects of biochar on selected soil chemical properties and on wheat and millet yield, Journal of Ecology, 33, 20, pp. 6534-6542, (2013)

[10]

Wang Y., Geng Z., Wang Q., Et al., Influence of biochar on greenhouse gases emissions and physico-chemical properties of loess soil, Environment Scivence, 37, 9, pp. 3634-3641, (2016)

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