| Effects of different tillage managements on soil physical properties in dryland |
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| DOI：10.7606/j.issn.1000-7601.2010.02.13 |
| Key Words: soil physical properties tillage treatment dryland |
| Author Name | Affiliation | | LIU Shuang | Institute of Environment and Sustainable Development in Agriculture CAAS, Key Laboratory of Dryland Farming and Water-saving Agriculture MOA, Beijing 100081, China | | HE Wenqing | Institute of Environment and Sustainable Development in Agriculture CAAS, Key Laboratory of Dryland Farming and Water-saving Agriculture MOA, Beijing 100081, China | | YAN Changrong | Institute of Environment and Sustainable Development in Agriculture CAAS, Key Laboratory of Dryland Farming and Water-saving Agriculture MOA, Beijing 100081, China | | LIU Qin | Institute of Environment and Sustainable Development in Agriculture CAAS, Key Laboratory of Dryland Farming and Water-saving Agriculture MOA, Beijing 100081, China |
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| Abstract: |
| In this study, the effects of conventional tillage and three conservation tillage managements on soil compaction, soil bulk density and the soil infiltration rate were investigated in different growth stages of maize in Shouyang Dryland Farming Experimental Station. The treatments included all-straw-returning tillage (ASRT), no-till with straw mulching (NTSM), shallow rotary treatment (SRT) and conventional tillage (CT). The results show that the all-straw-returning tillage treatment results in a significant reduction in soil infiltration rate, and it has no significant effect on other soil physical properties compared with the conventional tillage. The treatment of no-till with straw mulching has a great impact on soil physical properties, which can lead to an increase in soil compaction and soil bulk density in the layer of 0～10 cm, a reduction in soil infiltration rate before sowing of maize, and a 2℃ decrease in soil temperature compared with the conventional tillage. The shallow rotary treatment has a greater improvement in the soil compaction in the top layer and soil infiltration rate than the all-straw-returning tillage and no till with straw mulching treatments and it can improve the soil water content by 10% compared to the conventional tillage. Also the shallow rotary treatment increases
the soil bulk density in the layer of 40～60 cm. |
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