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对“百农 64”亩产 40 0～ 60 0 kg无倒伏麦田产量构成因素的统计分析表明 ,成产因素对产量的作用依次为穗数 >穗粒重 >粒重。亩产从 50 0 kg提高到 60 0 kg的模拟产量结构是 :穗数从每亩37.77万增加到 42 .59万 ;穗粒数从 38.0 0粒增加到 41 .0 4粒 ;千粒重从 38.84g下降到 38.1 6g。实现亩产 60 0 kg左右超高产水平的增产途径 ,应是增穗增粒稳定粒重 ,实现这一途径的技术关键是改善群体质量 ,降低群体对个体的制约 ,避免发生倒伏。
The statistical analysis of the yield components of “Bai Nong 64” per mu of 40 0 ~ 60 0 kg no-yield wheat showed that the effect of yield factors on the yield was spike> grain weight> grain weight. The simulated yield structure for increasing the yield per mu from 50 0 kg to 60 0 kg was as follows: the number of panicles increased from 377,700 to 425,900 per mu; the number of grains per spike increased from 38,0 0 to 41,04; the grain weight per thousand increased from 38,84g Drop to 38.1 6g. Achieving a yield increase of about 60 kg per mu should be the result of increasing the grain weight and stabilizing the grain weight. The key point to realize this approach is to improve the quality of the population, reduce the restriction of the population to the individual, and avoid the occurrence of lodging.