| Cite this article: | 郭山强,莫彦,吴忠东,等.华北地区地下滴灌春玉米出苗及生长对沟播开沟深度的响应[J].灌溉排水学报,0,():-. |
| GUO Shanqiang,MO Yan,WU Zhongdong,et al.华北地区地下滴灌春玉米出苗及生长对沟播开沟深度的响应[J].灌溉排水学报,0,():-. |
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| Effects of furrow depth of alternate row/bed planting on spring corn germination and yield under subsurface drip irrigation in North China Plain |
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GUO Shanqiang1, MO Yan2, WU Zhongdong1, WANG Jiandong3, ZHANG Yanqun2, GONG Shihong2, XU Mingming1, GUO Bin1, SHEN Xinlei4
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1.School of Agricultural Engineering and Food Science,Shandong University of Technology,Zibo;2.Institute of Water Resources,China Academy of Water Resources and Hydropower;3.Institute of Environment and SustainableSDevelopment in Agriculture,Chinese Academy of Agricultural Sciences,Beijing;4.Luohe Agricultural Information Center
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| Abstract: |
| Alternate row/bed planting (AP) can significantly increase the germination and yield under subsurface drip irrigation (SDI). In order to optimize this technology mode, a field experiment was carried out to investigate the effects of different furrow depths on soil moisture content and spring corn germination and growth and yield in north China. The results showed that: 1) the soil moisture content at the seeds increased with increasing ditch depth. After pre-emergence irrigation of 35 mm, the soil moisture content of H10 and H15 around seeds increased 18.2% and 25.7%, respectively, compared to H0; 2) The better soil moisture environment resulted in the emergence rate of H10 and H15 reaching more than 88%, which were 14.6% and 16.3% higher than H0, respectively, and the difference reached a significant level (P <0.05). But the difference between H10 and H15 was not significant; The plant height increased with increasing furrow depth, and the stem diameter decreased with increasing furrowing depth. The leaf area index of H10 and H15 was significantly higher than that of H0; The ear length, ear diameter and ear number of H0 increased by 6.8%, 4.5%, 2.2% and 7.6%, 2.7%, 11.1%, compared with H10 and H15. The only significant difference was observed in ear length between H0 and H15; 5) In terms of the ear number and 100-kernel weight, the yield of H10 treatment was the highest, reaching 12.9 t ha-1, which was significant increased, by 13.2% and 7.5%, compared with H0 and H15, respectively. In conclusion, AP was suitable for spring corn cultivation in north China under SDI, and the suitable furrow depth was 10 cm. |
| Key words: Subsurface drip irrigation; Alternate row/bed planting; Furrow depth; Germination; Yield |
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