| Cite this article: | 孙池涛,于超,孙景生,等.滨海盐碱地起垄沟播植棉技术增产机理研究[J].灌溉排水学报,0,():-. |
| sunchitao,Yu chao,Sun Jingsheng,et al.滨海盐碱地起垄沟播植棉技术增产机理研究[J].灌溉排水学报,0,():-. |
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| Mechanism of Increasing Cotton Yield by Ridge-furrow Cultivation in Coastal Saline-alkali Land |
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sunchitao1, Yu chao1, Sun Jingsheng2, Zhang Junpeng1, Fengdi3, Feng guoyi4, Zhang Qian4
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1.School of Water and Civil Engineering, Shandong Agricultural University;2.Key Laboratory of Crop Water Demand Process and Regulation;3.Weifang University of Science and Technology;4.Hebei Academy of Agriculture and Forestry Sciences
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| Abstract: |
| 【Objective】In order to reveal the mechanism of ridge-furrow cultivation on cotton yield-increasing in coastal saline-alkali land.【Method】Experimental research on conventional flat cultivation (CK) and ridge-furrow cultivation (RF) were selected in the coastal severely saline-alkali farmland, and the impact of cotton seedling rate, seedling growth, yield and its composition, root surface area and soil water and salt distribution were studied.【Result】 Compared with CK, the seedling rate of RF treatment increased by 8.3% and 56.6%, and the leaf area per plant increased by 67.9% and 38.7%; the number of bolls per plant increased by 33.9% and 63.4%, the Seed cotton yield increased by 37.0% and 196.4%, respectively, in 2014 and 2015. During the growth period of 2014, the root surface area of RF treatment increased by 35.9% on average when compared with CK. In 2014 and 2015, the average soil moisture of 0~60 cm layer of RF was 3.27% and 5.32% higher than that of CK during the cotton growth period. In 2014, the average electrical conductivity (EC) of 0~60 cm layer of RF was 14.43% lower than that of CK, while it was 1.24% higher than CK in 2015. During the dry period, the soil moisture of 0~60 cm outside the CK treatment was basically the same as that inside the membrane, and the electrical conductivity in 0~60 cm inside was 32.40% and 35.69% lower than that outside the membrane; while it was 2.87% and 5.98% higher for soil moisture, and was 40.76% and 59.95% lower for electrical conductivity for the inside than that outside the membrane in 2015.【Conclusion】Ridge-furrow cultivation optimizes the distribution of soil water and salt by changing the surface micro-topography, and promotes the growth of cotton seedlings and roots, as well as increases its yield. |
| Key words: Coastal saline-alkali soil; Cotton; Ridge-furrow cultivation; Soil water-salt distribution; mechanism |
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