行距和播量配比对高产小麦品种‘洛麦23’群体质量及产量的影响
Effect of Ratio of Row Spacing to Seeding Rate on Quality and Yield of High Yield Wheat ‘Luomai 23’

为给高产小麦品种‘洛麦23’推广应用提供理论参考，在大田条件下，连续2 a以‘洛麦23’为试验材料，采用随机区组试验设计，研究3个行距和3个播量对其群体质量及产量的影响。结果表明：不同行距间，小麦籽粒产量表现为行距15 cm最高，较行距10 cm和行距20 cm高2.13%和8.84%，茎蘖数表现拔节期行距10 cm和行距15 cm显著高于行距20 cm，叶面积指数（LAI）表现越冬期和起身期行距10 cm和行距15 cm显著高于行距20 cm、花后30 d行距15 cm高于行距10 cm和行距20 cm，粒质量叶比和粒数叶比表现为行距10 cm和行距15 cm高于行距20 cm，结实粒表现为行距15 cm高于行距10 cm和行距20 cm；不同播量间，产量表现150 kg·hm-2播量和262.5 kg·hm-2播量高于375 kg·hm-2播量，分别较375 kg·hm-2播量高3.45%和5.92%，粒质量叶比表现为150 kg·hm-2播量和262.5 kg·hm-2播量显著高于375 kg·hm-2播量，茎蘖数、LAI、粒数叶比和结实粒显著差异。不同行距下各播量茎蘖数、LAI、粒数叶比和结实粒表现各有区别，产量以行距15 cm配置播量150 kg·hm-2为最高，达8 750.43 kg·hm-2。在‘洛麦23’推广应用中，可以适当调控行距和播量，做到种法结合，才能充分发挥品种高产潜力。
In order to provide a theoretical reference to extend high yield wheat variety ‘Luomai 23’,under field condition,the ‘Luomai 23’ was taken as an experimental material in consecutive two years,and the randomized blocks were designed to study the effects of row spacing ratio to seading rate on yield and component factors of high yield wheat variety ‘Luomai 23’. The resulta showed that wheat seeds yield was the highest at row spacing of 15 cm, and it was respectively 2.13% and 8.84% higher than that of row spacing of 10 cm and 20 cm, the number of tillers at jointing stage was significantly higher at row spacings of 10 cm and 15 cm than that of row spacing 20 cm. At overwintering period and growth stage, LAI of the row spacing 10 cm and row spacing 15 cm were significantly higher than that of row spacing 20 cm，30 days after anthesis,LAI of row spacing 15 cm was higher than that of row spacing 10 cm and 20 cm. The ratio of grain mass and grain number were higher at the row spacing 10 cm and 15 cm than that of 20 cm, grain yield of the row spacing 15 cm was significantly higher than that of row spacing 10 cm and row spacing 20 cm;in different seeding rate, the yield was higher at seeding rates of 150 kg·hm-2 and 262.5 kg·hm-2 than the seeding rate of 375 kg·hm-2,and the yields were 3.45% and 5.92% higher respectively than that of 375 kg·hm-2 of seeding rate, grain mass ratio of 150 kg·hm-2 and 262.5 kg·hm-2 seeding rate was higher than that of 375 kg·hm-2 seeding rate, tiller number,LAI, grain-leaf ratio and grain number had no significant difference. Under the different spacing density of tillers,LAI, grain number and grain yield performance were different, the grain yield was up to 8 750.43 kg·hm-2 at 15 cm spacing and seeding rate of 150 kg·hm-2 .In the extension of ‘Luomai 23’, adjusting spacing and sowing quantity could tap high yield potential of ‘Luomai 23’.