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[目的]为实现豫东潮土区夏玉米高产和轻简施肥。[方法]采取田间试验示范研究了专用缓释肥对夏玉米产量、经济效益及抗逆性的影响。[结果]周口市商水县潮土区实验点的结果表明,缓释氮比例占45%的专用缓释肥有利于提高千粒重和穗粒数,较习惯施肥,千粒重提高28 g,穗粒数增加16粒。缓释肥促进了夏玉米对养分的吸收利用,可维持土壤氮素养分平衡,增产增效显著,较习惯施肥,应用缓释肥暨种肥同播技术,增产13.5%,增效1 920元/hm_2;较与供试缓释肥等养分的普通肥料,增产10.3%,增效1 215元/hm_2。[结论 ]该研究为周口市大面积在玉米生产上推广缓释肥提供依据;为农机、农艺技术的创新融合拓展了更新空间。
[Objective] The research aimed to achieve high yield and simple fertilization of summer maize in Chao soil in the east of Henan Province. [Method] The field experiment was conducted to study the effect of special slow release fertilizer on yield, economic benefit and stress resistance of summer maize. [Result] The results of experimental points in Shachao area of Zhoukou City showed that the special slow-release fertilizer with 45% release rate of nitrogen could improve the 1000-grain weight and the number of grains per spike, which was 28g higher than that of habitual fertilization, Add 16 tablets. Slow-release fertilizer promoted the absorption and utilization of nutrients in summer maize, maintained the balance of nitrogen in soil, increased yield and increased efficiency significantly compared with conventional fertilization. Applying slow-releasing fertilizer and same-fat simultaneous sowing technology increased yield by 13.5% and efficiency by 1 920 yuan / hm_2; Compared with the common fertilizer for nutrients such as slow-release fertilizer, the yield increased by 10.3% and the efficiency increased by 1 215 yuan / hm_2. [Conclusion] This study provided the basis for large area of Zhoukou City to promote slow release fertilizer in corn production and expanded the renewal space for the innovation fusion of agricultural machinery and agronomic technology.