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| Effects of biochar application and organic fertilizer on the enzymatic activity in Albic soil |
| Received:February 09, 2021 |
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| KeyWord:Albic soil;biochar;organic fertilizer;yield;soil enzymatic activity |
| Author Name | Affiliation | E-mail | | LU Xinchun | Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China | | | ZHENG Yongzhao | Institute of Agricultural Science, Tonghua City, Mehekou 135007, China | | | CHEN Xu | Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China | | | HAN Xiaozeng | Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China | | | ZOU Wenxiu | Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China | | | DONG Benchun | Institute of Agricultural Science, Tonghua City, Mehekou 135007, China | | | YAN Jun | Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China | yanjun@iga.ac.cn |
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| Abstract: |
| This study conducted an experiment in northeast China designed to better understand the influence of biochar and organic fertilizer application on enzymatic activity in Albic soil. The effects of biochar(C1, 15 000 kg·hm-2 and C2, 30 000 kg·hm-2) and organic fertilizer(OM) application on β-1,4-glucosidase(BG), β-1,4-N-acetylglucosaminidase(NAG), leucine amino glucosidase(LAP), and acid phosphatase(AP) relating to carbon, nitrogen, and phosphorus cycling on Albic soil were investigated. The results showed that the maize yield increased following the application of biochar and organic fertilizer for three consecutive years; however, the application of the former had a negative impact in terms of economic benefits. Significant increases to the soil organic matter and total nitrogen content were only observed in the C2 treatments. Compared with the control treatment, BG enzyme activity significantly increased by 82.2% in the C1 treatment, and all four enzyme activities were significantly increased by 23.1%~47.9% in the C2 treatment. The treatment with organic fertilizer application was found to significantly increase AP and LAP enzymatic activities. The results showed that the most effective means to improve Albic soils was biochar application of 30 000 kg·hm-2; its subsequent effects might be maintained for >3 a, while attention should be directed toward the resultant negative economic benefits. Therefore, organic fertilizer should be considered a priority to improve soil fertility in Albic soils, and a one-time biochar application should be considered for plots characterized by severe reductions in yield. |
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