Effects of depth of straw returning on maize yield potential and greenhouse gas emissions
Appropriate straw incorporation has ample agronomic and environmental benefits, but most studies are limited to straw mulching or application on the soil surface. To determine the effect of depth of straw incorporation on the crop yield, soil organic carbon (SOC), total nitrogen (TN) and greenhouse...
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2024-02-01
|
| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2024.1344647/full |
| _version_ | 1797301367815012352 |
|---|---|
| author | Junqiang Wang Yehui Han Chao Zhou Ting Xu Zhongcheng Qu Bo Ma Ming Yuan Lianxia Wang Yang Liu Qingchao Li Xinying Ding Chunrong Qian Baoxin Ma |
| author_facet | Junqiang Wang Yehui Han Chao Zhou Ting Xu Zhongcheng Qu Bo Ma Ming Yuan Lianxia Wang Yang Liu Qingchao Li Xinying Ding Chunrong Qian Baoxin Ma |
| author_sort | Junqiang Wang |
| collection | DOAJ |
| description | Appropriate straw incorporation has ample agronomic and environmental benefits, but most studies are limited to straw mulching or application on the soil surface. To determine the effect of depth of straw incorporation on the crop yield, soil organic carbon (SOC), total nitrogen (TN) and greenhouse gas emission, a total of 4 treatments were set up in this study, which comprised no straw returning (CK), straw returning at 15 cm (S15), straw returning at 25 cm (S25) and straw returning at 40 cm (S40). The results showed that straw incorporation significantly increased SOC, TN and C:N ratio. Compared with CK treatments, substantial increases in the grain yield (by 4.17~5.49% for S15 and 6.64~10.06% for S25) were observed under S15 and S25 treatments. S15 and S25 could significantly improve the carbon and nitrogen status of the 0-40 cm soil layer, thereby increased maize yield. The results showed that the maize yield was closely related to the soil carbon and nitrogen index of the 0-40 cm soil layer. In order to further evaluate the environmental benefits of straw returning, this study measured the global warming potential (GWP) and greenhouse gas emission intensity (GHGI). Compared with CK treatments, the GWP of S15, S25 and S40 treatments was increased by 9.35~20.37%, 4.27~7.67% and 0.72~6.14%, respectively, among which the S15 treatment contributed the most to the GWP of farmland. GHGI is an evaluation index of low-carbon agriculture at this stage, which takes into account both crop yield and global warming potential. In this study, GHGI showed a different trend from GWP. Compared with CK treatments, the S25 treatments had no significant difference in 2020, and decreased significantly in 2021 and 2022. This is due to the combined effect of maize yield and cumulative greenhouse gas emissions, indicating that the appropriate straw returning method can not only reduce the intensity of greenhouse gas emissions but also improve soil productivity and enhance the carbon sequestration effect of farmland soil, which is an ideal soil improvement and fertilization measure. |
| first_indexed | 2024-03-07T23:21:32Z |
| format | Article |
| id | doaj.art-14845830243e4eacb09c66e118c3d0fe |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-03-07T23:21:32Z |
| publishDate | 2024-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-14845830243e4eacb09c66e118c3d0fe2024-02-21T05:31:37ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2024-02-011510.3389/fpls.2024.13446471344647Effects of depth of straw returning on maize yield potential and greenhouse gas emissionsJunqiang Wang0Yehui Han1Chao Zhou2Ting Xu3Zhongcheng Qu4Bo Ma5Ming Yuan6Lianxia Wang7Yang Liu8Qingchao Li9Xinying Ding10Chunrong Qian11Baoxin Ma12Heilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaHeilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaHeilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaHeilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaHeilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaHeilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaHeilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaHeilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaHeilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaHeilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaAnimal Husbandry and Veterinary Branch of Heilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaInstitute of Tillage and Cultivation, Heilongjiang Academy of Agricultural Sciences, Harbin, ChinaHeilongjiang Academy of Agricultural Sciences, Qiqihar, ChinaAppropriate straw incorporation has ample agronomic and environmental benefits, but most studies are limited to straw mulching or application on the soil surface. To determine the effect of depth of straw incorporation on the crop yield, soil organic carbon (SOC), total nitrogen (TN) and greenhouse gas emission, a total of 4 treatments were set up in this study, which comprised no straw returning (CK), straw returning at 15 cm (S15), straw returning at 25 cm (S25) and straw returning at 40 cm (S40). The results showed that straw incorporation significantly increased SOC, TN and C:N ratio. Compared with CK treatments, substantial increases in the grain yield (by 4.17~5.49% for S15 and 6.64~10.06% for S25) were observed under S15 and S25 treatments. S15 and S25 could significantly improve the carbon and nitrogen status of the 0-40 cm soil layer, thereby increased maize yield. The results showed that the maize yield was closely related to the soil carbon and nitrogen index of the 0-40 cm soil layer. In order to further evaluate the environmental benefits of straw returning, this study measured the global warming potential (GWP) and greenhouse gas emission intensity (GHGI). Compared with CK treatments, the GWP of S15, S25 and S40 treatments was increased by 9.35~20.37%, 4.27~7.67% and 0.72~6.14%, respectively, among which the S15 treatment contributed the most to the GWP of farmland. GHGI is an evaluation index of low-carbon agriculture at this stage, which takes into account both crop yield and global warming potential. In this study, GHGI showed a different trend from GWP. Compared with CK treatments, the S25 treatments had no significant difference in 2020, and decreased significantly in 2021 and 2022. This is due to the combined effect of maize yield and cumulative greenhouse gas emissions, indicating that the appropriate straw returning method can not only reduce the intensity of greenhouse gas emissions but also improve soil productivity and enhance the carbon sequestration effect of farmland soil, which is an ideal soil improvement and fertilization measure.https://www.frontiersin.org/articles/10.3389/fpls.2024.1344647/fullstraw returningmaizeyield potentialgreenhouse gasessoil organic carbon |
| spellingShingle | Junqiang Wang Yehui Han Chao Zhou Ting Xu Zhongcheng Qu Bo Ma Ming Yuan Lianxia Wang Yang Liu Qingchao Li Xinying Ding Chunrong Qian Baoxin Ma Effects of depth of straw returning on maize yield potential and greenhouse gas emissions Frontiers in Plant Science straw returning maize yield potential greenhouse gases soil organic carbon |
| title | Effects of depth of straw returning on maize yield potential and greenhouse gas emissions |
| title_full | Effects of depth of straw returning on maize yield potential and greenhouse gas emissions |
| title_fullStr | Effects of depth of straw returning on maize yield potential and greenhouse gas emissions |
| title_full_unstemmed | Effects of depth of straw returning on maize yield potential and greenhouse gas emissions |
| title_short | Effects of depth of straw returning on maize yield potential and greenhouse gas emissions |
| title_sort | effects of depth of straw returning on maize yield potential and greenhouse gas emissions |
| topic | straw returning maize yield potential greenhouse gases soil organic carbon |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2024.1344647/full |
| work_keys_str_mv | AT junqiangwang effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT yehuihan effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT chaozhou effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT tingxu effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT zhongchengqu effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT boma effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT mingyuan effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT lianxiawang effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT yangliu effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT qingchaoli effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT xinyingding effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT chunrongqian effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions AT baoxinma effectsofdepthofstrawreturningonmaizeyieldpotentialandgreenhousegasemissions |