Biochar Decreases Fertilizer Leaching and Promotes Miscanthus Growth in Saline-Alkaline Soil
Biochar has been widely reported to improve soil conditions and affect plant growth. However, its effectiveness is limited by soil type and production technology. Considering the application effect of biochar in saline alkali soil, there is currently a lack of in-depth mechanism explanations in the...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-10-01
|
| Series: | Plants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2223-7747/12/20/3649 |
| _version_ | 1797572473698385920 |
|---|---|
| author | Manlin Xu Qiqi Sun Qiangbo Liu Guo He Congpeng Wang Kang He |
| author_facet | Manlin Xu Qiqi Sun Qiangbo Liu Guo He Congpeng Wang Kang He |
| author_sort | Manlin Xu |
| collection | DOAJ |
| description | Biochar has been widely reported to improve soil conditions and affect plant growth. However, its effectiveness is limited by soil type and production technology. Considering the application effect of biochar in saline alkali soil, there is currently a lack of in-depth mechanism explanations in the research. Therefore, we designed an experiment to explore the effect of biochar on plant growth in saline alkali soil and conducted soil column experiments in a greenhouse environment using composite inorganic fertilizer (NPK). The results showed that biochar significantly affected the distribution of soil nutrient content at different depths, with a significant increase in fertility levels in the surface and middle layers and a decrease in fertility levels in deep soils. Compared to using fertilizers alone, the combined use of biochar and fertilizers further expands the enrichment effect and significantly reduces the leaching of fertilizers into deeper layers. At the same time, the application of biochar also improved soil properties, including an increase in electrical conductivity and organic matter content, as well as an increase in soil enzyme activity. On the other hand, the application of biochar also increases the activity of antioxidant enzymes and the content of osmoregulation substances in plants, reducing the environmental stress that plants are subjected to. Therefore, our results indicate that biochar can reduce the leaching of fertilizers into deep soil layers, improve soil properties, and promotes the growth of Miscanthus in saline alkali soils. |
| first_indexed | 2024-03-10T20:56:46Z |
| format | Article |
| id | doaj.art-91bc8bcb834445df937bbb1ed05bacdb |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T20:56:46Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-91bc8bcb834445df937bbb1ed05bacdb2023-11-19T17:50:00ZengMDPI AGPlants2223-77472023-10-011220364910.3390/plants12203649Biochar Decreases Fertilizer Leaching and Promotes Miscanthus Growth in Saline-Alkaline SoilManlin Xu0Qiqi Sun1Qiangbo Liu2Guo He3Congpeng Wang4Kang He5Shandong Peanut Research Institute, Qingdao 266100, ChinaShandong Peanut Research Institute, Qingdao 266100, ChinaNational Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai’an 271018, ChinaQingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266100, ChinaCollege of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao 266109, ChinaShandong Peanut Research Institute, Qingdao 266100, ChinaBiochar has been widely reported to improve soil conditions and affect plant growth. However, its effectiveness is limited by soil type and production technology. Considering the application effect of biochar in saline alkali soil, there is currently a lack of in-depth mechanism explanations in the research. Therefore, we designed an experiment to explore the effect of biochar on plant growth in saline alkali soil and conducted soil column experiments in a greenhouse environment using composite inorganic fertilizer (NPK). The results showed that biochar significantly affected the distribution of soil nutrient content at different depths, with a significant increase in fertility levels in the surface and middle layers and a decrease in fertility levels in deep soils. Compared to using fertilizers alone, the combined use of biochar and fertilizers further expands the enrichment effect and significantly reduces the leaching of fertilizers into deeper layers. At the same time, the application of biochar also improved soil properties, including an increase in electrical conductivity and organic matter content, as well as an increase in soil enzyme activity. On the other hand, the application of biochar also increases the activity of antioxidant enzymes and the content of osmoregulation substances in plants, reducing the environmental stress that plants are subjected to. Therefore, our results indicate that biochar can reduce the leaching of fertilizers into deep soil layers, improve soil properties, and promotes the growth of Miscanthus in saline alkali soils.https://www.mdpi.com/2223-7747/12/20/3649biocharfertilizer leachingsoil depthenzyme activitysaline-alkaline soil |
| spellingShingle | Manlin Xu Qiqi Sun Qiangbo Liu Guo He Congpeng Wang Kang He Biochar Decreases Fertilizer Leaching and Promotes Miscanthus Growth in Saline-Alkaline Soil Plants biochar fertilizer leaching soil depth enzyme activity saline-alkaline soil |
| title | Biochar Decreases Fertilizer Leaching and Promotes Miscanthus Growth in Saline-Alkaline Soil |
| title_full | Biochar Decreases Fertilizer Leaching and Promotes Miscanthus Growth in Saline-Alkaline Soil |
| title_fullStr | Biochar Decreases Fertilizer Leaching and Promotes Miscanthus Growth in Saline-Alkaline Soil |
| title_full_unstemmed | Biochar Decreases Fertilizer Leaching and Promotes Miscanthus Growth in Saline-Alkaline Soil |
| title_short | Biochar Decreases Fertilizer Leaching and Promotes Miscanthus Growth in Saline-Alkaline Soil |
| title_sort | biochar decreases fertilizer leaching and promotes miscanthus growth in saline alkaline soil |
| topic | biochar fertilizer leaching soil depth enzyme activity saline-alkaline soil |
| url | https://www.mdpi.com/2223-7747/12/20/3649 |
| work_keys_str_mv | AT manlinxu biochardecreasesfertilizerleachingandpromotesmiscanthusgrowthinsalinealkalinesoil AT qiqisun biochardecreasesfertilizerleachingandpromotesmiscanthusgrowthinsalinealkalinesoil AT qiangboliu biochardecreasesfertilizerleachingandpromotesmiscanthusgrowthinsalinealkalinesoil AT guohe biochardecreasesfertilizerleachingandpromotesmiscanthusgrowthinsalinealkalinesoil AT congpengwang biochardecreasesfertilizerleachingandpromotesmiscanthusgrowthinsalinealkalinesoil AT kanghe biochardecreasesfertilizerleachingandpromotesmiscanthusgrowthinsalinealkalinesoil |