引用本文: | 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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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 |
郭山强1, 莫彦2, 吴忠东1, 王建东3, 张彦群2, 龚时宏2, 徐明明1, 郭彬1, 沈新磊4
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1.山东理工大学农业工程与食品科学学院;2.中国水利水电科学研究院水利研究所;3.中国农业科学院农业环境与可持续发展研究所;4.漯河市农业信息中心
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摘要: |
开沟播种技术可以显著提高地下滴灌玉米出苗率及产量,为优化该技术模式,该文在华北地区开展了春玉米地下滴灌田间试验,研究了不同开沟深度(H0:不开沟的平地播种,H10:沟深10 cm,H15:沟深15 cm)对土壤含水率、玉米出苗、生长和产量的影响。结果表明:1)种子处土壤含水率随沟深增加而增大,灌35 mm的出苗水后,H10与H15种子处土壤含水率分别比H0增大18.2%和25.7%;2)较好的土壤水分环境使得H10和H15的出苗率均达到88%以上,分别比H0提高了14.6%和16.3%,差异达到显著水平(P<0.05),但H10和H15间的差异不显著;3)玉米株高随沟深增加而增大,茎粗随沟深的增加而减小,H10和H15的叶面积指数显著高于H0;4)相较于H10和H15,H0的穗长、穗直径和穗粒数比H10和H15分别平均增大1.3%、1.6%、2.5%和7.6%、2.7%、11.1%,其中穗粒数和穗长显著高于H15;5)综合穗数和百粒重,H10产量最高,达到12.9 t ha-1,较H0和H15处理分别显著提高13.2%和7.5%。开沟播种技术适宜华北地区地下滴灌春玉米种植,适宜的开沟深度是10 cm。 |
关键词: 地下滴灌;开沟播种;开沟深度;玉米出苗率;产量 |
DOI: |
分类号:S275 |
基金项目:流域水循环模拟与调控国家重点实验室自由探索研究项目(SKL2018TS05),国家自然科学基金面上项目(51879277),中国水科院基本科研业务费项目(ID0145B062020) |
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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 |
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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