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作者	单位
朱慧杰，郑春风，张国钊，朱云集，郭天财，王晨阳	（1.河南农业大学/国家小麦工程技术研究中心，河南郑州 450002； 2.河南农业大学资源与环境学院，河南郑州 450002）

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中文摘要:

为探索提高小麦穗粒数的技术途径与栽培管理模式，在大田试验条件下，以豫麦49-198为材料，研究了不同栽培管理模式(当前农民栽培管理模式、节本增效栽培管理模式、超高产栽培管理模式、高产高效栽培管理模式)对小麦小花发育动态模式与结实特性的影响。结果表明，不同栽培管理模式下，随播后累积生长度日的增加，小麦小花的分化动态均符合二次曲线方程模式，退化和败育动态均符合一次方程模式，但不同栽培管理模式间小花发育方程参数上存在明显差异；与当前农民栽培管理模式相比，其他3种栽培管理模式均显著增加了可孕小花数和最终结实粒数，并显著提高了小穗、小花和可孕花的结实率，其中以高产高效栽培管理模式分化小花数、可孕小花数和最终结实粒数提高的幅度最大。

英文摘要:

The objectives of this study were to investigate the effects of different cultivation management modes on the characteristics of floret development and grain set of winter wheat cultivar Yumai 48-198, and to suggest a reasonable cultivation and management model for wheat production in Henan high-yield irrigation areas. The four cultivation and management modes used were Farmer’s Planting Cultivation mode (FP), Low-cost and High-efficiency cultivation and management mode (JH), Super high yield cultivation mode (SH), High yield and high efficiency cultivation and management mode (HH). The dynamic of floret initiation of wheat grown under different cultivation management modes showed quadratic rising curve, and that of floret degeneration and infertility showed the linear decrease with the growing-degree-days (GDD) after sowing, but the parameters of the equations were different for the wheat of different cultivation management modes. Compared with FPC, HH, SH and JH effectively increased the fertile florets and set grains of the wheat, and significantly increased the set numbers of spikelets, florets and grains, and that of HH were significantly higher than other models.

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