| Effects of different tillage practices on growing environment and yield of dryland maize |
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| DOI：10.7606/j.issn.1000-7601.2016.01.21 |
| Key Words: dryland maize tillage practices growing environment yield |
| Author Name | Affiliation | | ZHOU Jing | Modern Agricultural Research Center, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi 030031, China | | SHI Xiang-yuan | Modern Agricultural Research Center, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi 030031, China | | LI Yong-ping | Modern Agricultural Research Center, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi 030031, China | | ZHANG Xiao-chen | Modern Agricultural Research Center, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi 030031, China |
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| Abstract: |
| A fixed position field experiment approach was employed to investigate the effects of six different tillage practices, including deep tillage (30～35 cm) with applied sheep manure (4 m3 of volume) (MP3), deep tillage (20～25 cm) with applied sheep manure (4 m3 of volume) (MP2), rotary tillage (10～15 cm) with applied sheep manure (4 m3 of volume) (MP1), deep tillage (30～35 cm) (P3), deep tillage (20～25 cm) (P2), and rotary tillage (10～15 cm) (P1), on soil temperature, soil moisture, soil respiration rate and yield of dryland maize. The results showed that the growth of dryland maize was promoted effectively after application of different tillage practices. Comparing to conventional tillage, the soil moisture of MP3 and P3 were increased by 39% and 32.44%. Geothermal energy of MP3 became increased more significantly than that by conventional tillage. During maize growth period, peak of soil respiration rate appeared in late June, and soil respiration rate was 0.68～1.26 times higher than that by conventional approach. In terms of the yield, the difference was also significant and the increases varied from 11.94% to 36.51%. Based on the comprehensive experimental results from three successive years, MP3, MP2 and P3 were the appropriate tillage practices. |
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