| 河南轻质土壤畦灌水肥耦合技术参数试验研究 |
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| 作者单位： | ;1.河南农业大学资源与环境学院;2.华北水利水电大学水利学院 |
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| 摘 要： | 水肥耦合是当前我国农业灌溉施肥技术发展的趋势,近年来与高效节水灌溉技术结合发展迅速,然而,畦灌水肥耦合技术的研究相对落后,无法满足我国当前和近期相当长一段时期内的农业节水节肥发展需求。【目的】要探索地面灌溉水肥一体化节水节肥适宜参数。【方法】以河南轻质土壤为例,开展了畦灌水肥耦合试验研究,探索畦灌随水施肥模式下的节水节肥和灌水施肥质量控制的适宜参数。【结果】对于畦灌,50 m以内的畦长可获得较好的灌水质量,间隔灌溉方式灌水质量最好,从不冲不淤以及灌水质量综合考虑,入畦单宽流量宜小于1.98 L/(m·s),畦长小于35 m时,间隔加肥下,N和K的施肥均匀度均在80%以上,N和K的储肥率均在85%以上,连续加肥下,N和K的施肥均匀度分别在80%、45%以上,N和K的储肥率均在80%以上。【结论】从灌水施肥综合效果来看,轻质壤土畦灌的畦长不宜大于35 m,入畦单宽流量控制在1.98 L/(m·s)左右,施肥方式宜采取间隔加肥方式。
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| 关 键 词： | 河南 轻质土壤 畦灌 水肥耦合 技术参数 |
Experimental Study on Integrated Technical Parameters of Water and Fertilizer for Light Soil Surface Irrigation in Henan Province |
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| Institution: | ,College of Resources and Environment, Henan Agricultural University,College of Water Resources, North China University of Water Resources and Hydropower |
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| Abstract: | The coupling of water and fertilizer is the developing trend of agricultural irrigation and fertilization technology in China. In recent years, it has developed rapidly with high efficiency water saving irrigation technology. However, the research of border irrigation and fertilizer coupling technology is relatively backward.【Objective】It is necessary to explore the suitable parameters of the integration of surface irrigation water and fertilizer for saving water and fertilizer.【Method】The light soil in Henan Province was taken as an example. The coupling experiment of water and fertilizer in border irrigation was carried out to explore the suitable parameters of water saving and fertilizer saving and quality control under border irrigation with water fertilization model.【Result】For border irrigation, the best irrigation quality can be obtained when the border length was less than 50 m, and the interval irrigation method was the best, never scouring and not silting, and the irrigation quality was considered comprehensively. When the flow rate of the border is less than 1.98 L/(m · s) and the border length is less than 35 m, the flow of the border into the border should be less than 1.98 L/(m · s). Under interval fertilization, the evenness of N and K was more than 80%, and the storage rate of N and K was more than 85%. Under continuous fertilization, the evenness of N and K was over 80% and 45% respectively, and that of N and K was over 80% and 45%, respectively, and that of N and K were over 85% and 85%, respectively.【Conclusion】From the comprehensive effect of irrigation and fertilization, the border length of border irrigation in light loam should not be more than 35 m, and the flow rate per border is about 1.98 L/(m·s). Interval fertilization should be adopted. |
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| Keywords: | Henan province sand soil border irrigation water fertilizer coupling technical parameters |
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