| Cite this article: | 崔光旭,朱文东,李二珍,等.河套灌区盐碱地咸水滴灌食葵播种模式探究[J].灌溉排水学报,2022,():-. |
| CUI Guangxu,ZHU Wendong,LI Erzhen,et al.河套灌区盐碱地咸水滴灌食葵播种模式探究[J].灌溉排水学报,2022,():-. |
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| Sunflower Seeding Pattern in Hetao Irrigation Area of Saline Water Drip Irrigation in Saline-alkali Land |
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CUI Guangxu1,2,3,2,4,2,5,2,6,2,7,2, ZHU Wendong1, LI Erzhen4, MIAO Junxia5, LI Jianzhong6, LI Wei7, LI Xiaobin1, WAN Shuqin1
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1.Key Laboratory of Water Cycle and Related Land Surface Processes,Institute of Geographical Sciences and Natural Resources Research,CAS;2.China;3.University of Chinese Academy of Sciences;4.Wuyuan County Agriculture and Animal Husbandry Technology Promotion Center,Inner Mongolia Autonomous Region;5.Wuyuan County Science and Technology Service Center,Inner Mongolia Autonomous Region;6.Wuyuan County Agriculture and animal Husbandry and science and Technology Bureau,Inner Mongolia Autonomous Region;7.Tongliao Meteorological Bureau,Inner Mongolia Autonomous Region
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| Abstract: |
| 【Objective】In order to clarify the key parameters such as suitable seeding depth, hole covering mode and first irrigation amount of soil moisture under saline water drip irrigation in saline and alkaline land in hetao irrigation area, the cultivation mode of sunflower suitable for saline water drip irrigation in saline and alkali land was proposed.【Method】The field experiments of three kinds of treatment for this study, including four sowing depth (2, 4, 6, and 8 cm), three water and salt regulation first irrigation water quantity (21, 28 and 35 mm) and two kinds of hole cover means (coated sand, sieved sand), and this paper analyzes the above grow agronomic measures to deal with effects on food kwai germination rate and seedling growth.【Result】(1) With the increase of sowing depth, the final seedling emergence rate firstly increased and then decreased, and the highest seedling emergence rate reached 93% when the sowing depth was 4 cm. With the increase of sowing depth, the aboveground biomass of seedlings decreased and the underground biomass increased. (2) The initial irrigation water amount of 28 and 35 mm had little effect on the seedling emergence rate of seeding depth less than 4 cm. When the irrigation amount was greater than 4 cm, the seedling emergence rate was the highest at 35 mm. With the increase of irrigation amount, the desalinization effect of soil around the root was better, and the average desalinization rates in 0-10 cm soil layer were 37.5%, 54% and 62%, respectively. (3) After sowing, the seedling emergence rate of the seed hole with sand cover was 53% higher than that without sand cover. The soil on the top of the seed without sand cover was easy to harden and the seedling emergence rate was low.【Conclusion】In Inner Mongolia Hetao Irrigation Area and other heavily saline-alkali land areas where water resources are scarce, it is recommended to adopt the sowing mode with the sowing depth of 4 cm, the initial irrigation amount of 28 mm (saline water), and the planting hole covered with fine sand. It can not only save water resources but also ensure high emergence rate of eating sunflower. |
| Key words: sunflower; seeding mode; saline water; saline-alkali land; salt-leaching |
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