Effect of No-tillage on Soil Aggregates in Farmland：A Meta Analysis
In order to clarify the impact of no-tillage on the quality of farmland soil aggregates in China and promote the adaptive application of no-tillage practices， a Meta-analysis was conducted by collecting data from 116 published studies. The effects of no-tillage on aggregate size distribution， mean weight diameter （MWD）， and aggregate-associated C were studied. The results showed that compared with that under tillage， no-tillage significantly increased the proportion of macroaggregates （10.9%） and MWD （12.8%） and decreased the proportion of clay and silt （-15.5%） but had no significant effect on soil microaggregate and aggregate-associated C. The subgroup and Meta regression analysis showed that no-tillage significantly increased the proportion of macroaggregates in Northwest China （17.6%） and MWD in North China （15.4%）. In upland and clay loam， no-tillage increased MWD by 12.6% and 18.4%， respectively. The effect of no-tillage on increasing the proportion of macroaggregates increased with the soil pH. When straw returned， no-tillage significantly increased the proportion of macroaggregates （9.6%） and MWD （11.6%）， but no significant effect of no-tillage on aggregates was found after straw removal. Regarding test duration， short-term （ < 5 a） no-tillage could significantly increase the proportion of macroaggregates， whereas long-term （ > 10 a） no-tillage could improve the MWD. In different soil layers， no-tillage could only significantly improve the aggregate size distribution and MWD in topsoil （0-20 cm） but had no effect in subsoil （ > 20 cm）. In summary， no-tillage could improve aggregate size distribution and stability but had no effect on aggregate-associated C. Production region， soil properties， field management methods， and other factors should be fully considered in production practice to effectively improve the quality of soil aggregates.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:45 |
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| Enthalten in: |
Huan jing ke xue= Huanjing kexue - 45(2024), 2 vom: 08. Feb., Seite 952-960 |
| Sprache: |
Chinesisch |
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| Beteiligte Personen: |
Xu, Yi-Ping [VerfasserIn] |
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| Links: |
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| Themen: |
Aggregate-associated SOC |
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| Anmerkungen: |
Date Revised 12.03.2024 published: Print Citation Status PubMed-not-MEDLINE |
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| doi: |
10.13227/j.hjkx.202303142 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM369616499 |
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| 520 | |a In order to clarify the impact of no-tillage on the quality of farmland soil aggregates in China and promote the adaptive application of no-tillage practices， a Meta-analysis was conducted by collecting data from 116 published studies. The effects of no-tillage on aggregate size distribution， mean weight diameter （MWD）， and aggregate-associated C were studied. The results showed that compared with that under tillage， no-tillage significantly increased the proportion of macroaggregates （10.9%） and MWD （12.8%） and decreased the proportion of clay and silt （-15.5%） but had no significant effect on soil microaggregate and aggregate-associated C. The subgroup and Meta regression analysis showed that no-tillage significantly increased the proportion of macroaggregates in Northwest China （17.6%） and MWD in North China （15.4%）. In upland and clay loam， no-tillage increased MWD by 12.6% and 18.4%， respectively. The effect of no-tillage on increasing the proportion of macroaggregates increased with the soil pH. When straw returned， no-tillage significantly increased the proportion of macroaggregates （9.6%） and MWD （11.6%）， but no significant effect of no-tillage on aggregates was found after straw removal. Regarding test duration， short-term （ < 5 a） no-tillage could significantly increase the proportion of macroaggregates， whereas long-term （ > 10 a） no-tillage could improve the MWD. In different soil layers， no-tillage could only significantly improve the aggregate size distribution and MWD in topsoil （0-20 cm） but had no effect in subsoil （ > 20 cm）. In summary， no-tillage could improve aggregate size distribution and stability but had no effect on aggregate-associated C. Production region， soil properties， field management methods， and other factors should be fully considered in production practice to effectively improve the quality of soil aggregates | ||
| 650 | 4 | |a English Abstract | |
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Meta analysis | |
| 650 | 4 | |a aggregate-associated SOC | |
| 650 | 4 | |a mean weight diameter （MWD） | |
| 650 | 4 | |a no-tillage | |
| 650 | 4 | |a soil aggregates | |
| 700 | 1 | |a Rao, Yue-Yue |e verfasserin |4 aut | |
| 700 | 1 | |a Meng, Yan |e verfasserin |4 aut | |
| 700 | 1 | |a Wen, Yuan |e verfasserin |4 aut | |
| 700 | 1 | |a Meng, Wei-Wei |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Xu-Qing |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Zong-Xin |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Kai-Chang |e verfasserin |4 aut | |
| 700 | 1 | |a Dai, Hong-Cui |e verfasserin |4 aut | |
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