| Cite this article: | 邱菁华,孙书洪,薛铸,等.间歇灌溉下不同生育时期施硅对水稻生长发育的影响[J].灌溉排水学报,0,():-. |
| qiu jing hua,sun shu hong,xue zhu,et al.间歇灌溉下不同生育时期施硅对水稻生长发育的影响[J].灌溉排水学报,0,():-. |
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| Effects of Silicon Application at Different Growth Stages on Rice Growth and Development under Intermittent Irrigation |
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qiu jing hua, sun shu hong, xue zhu, peng jin zhou, yi ruo chen, dong jian shu
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Department of Hydraulic Engineering, Tianjin Agricultural University.
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| Abstract: |
| 【Objective】In view of the shortage of agricultural irrigation water, intermittent irrigation is an important strategy to save irrigation water and improve water use efficiency and yield. The purpose of this paper was to explore the effect of silicon fertilizer application at different growth stages on rice growth and yield under intermittent irrigation mode and determine the appropriate silicon fertilizer application period.【Method】The "Jinyuan 85" was used as experimental material, and the field plot experiment was adopted. Six silicon application treatments were set up in intermittent irrigation mode: no silicon fertilizer(CK),silicon fertilizer at tillering stage(F1),silicon fertilizer at jointing period(F2),silicon fertilizer at booting stage(F3),silicon fertilizer at heading stage(F4), and silicon fertilizer at blooming and filling period(F5). The experiments measured and analyzed the indicators of growth characters and yield.【Result】The results showed that the addition of silicon fertilizer under intermittent irrigation not only promoted the growth and development of rice, but also improved yield and irrigation water use efficiency. Rice leaf area index, dry matter, yield, and irrigation water use efficiency increased by 1.15%~11.36%,9.17%~24.24%, 2.05%~8.63%,and 2.16%~8.63% . The effect of silicon fertilizer on rice was different in different growth stages, among which silicon fertilizer applied in tillering stage had the best effect.【Conclusion】To sum up, increasing silicon fertilizer can promote the growth and development of rice under intermittent irrigation mode, improve the yield and irrigation water use efficiency, and the tillering stage can be regarded as the suitable silicon fertilizer application period for "Jinyuan 85" rice under intermittent irrigation. |
| Key words: intermittent irrigation; rice; silicon fertilizer; growth traits; yield; irrigation water use efficiency |
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