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通过3年小区试验和69块生产田调查,分析了辽宁春小麦产量结构特点和增产途径。产量结构是小麦栽培的中心环节,低、中产田往往由于产量结构不合理,导致产量不高不稳。产量因素间存在明显数量关系,培肥地力,提高田间整齐度,能有效地改善穗粒性状。鉴于辽宁小麦生育期短,分蘖穗小特点,建立高产结构应以主茎成穗为主,增苗抓穗,进而协调产量因素间的关系。
Through three years plot test and 69 production plots, the characteristics of spring wheat yield structure and yield increase in Liaoning Province were analyzed. Yield structure is the central part of wheat cultivation, low, middle production fields are often due to unreasonable yield structure, resulting in low yield instability. There is a clear quantitative relationship between yield factors, fertility, improve field uniformity, can effectively improve grain traits. In view of the short growth period of Liaoning wheat and the characteristics of tillering spike, the establishment of high-yielding structure should be dominated by spike of main stem, increase of seedlings and grasping, and then coordinate the relationship between yield factors.