Abstract:To study the water-saving and high-yield planting pattern of winter wheat in the North China Plain, taking "Ji mai 22" as the research material, the conventional planting and wide-precision planting patterns were adopted in the winter wheat breeding period at Agricultural Experimental station of Shandong Agricultural University during 2015—2016 and 2016—2017. For each cropping pattern, the winter wheat was irrigated with 60 mm in the jointing stage and 60 mm for 10 d after the jointing stage, total 4 treatments. The leaf area, photosynthetically available radiation(PAR)intercept amount, dry matter accumulation and yield were observed in the growth period of winter wheat, and the influence of different treatments on winter wheat physiological indexes and yield was analyzed. The results showed that the wide-precision planting pattern significantly increased the leaf area index and PAR capture ratio of winter wheat. The effective utilization of the wheat PAR was optimized by delaying the irrigation, which further promoted the dry matter accumulation. At the same time, delaying the irrigation in the jointing stage significantly increased the wide-precision planting wheat kernel number per spike, thus increasing wheat yield significantly. The research can provide a theoretical basis and technical support. for the North China Plain winter wheat water-saving and high yield.
范艳丽, 刘俊梅, 赵嘉涛, 谭德冲, 李全起*. 推迟灌拔节水对宽幅麦田光合有效辐射的影响[J]. 排灌机械工程学报, 2018, 36(10): 952-957.
FAN Yanli, LIU Junmei, ZHAO Jiatao, TAN Dechong, LI Quanqi. Effect of delayed irrigation at jointing stage on photosynthetically available radiation capture ratio of wide-precision planting wheat. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(10): 952-957.
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