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作者	单位
李磊，王铜，汪晓东，王欢，苏文平，薛丽华，周芳芝，章建新	（1.新疆农业大学农学院，新疆乌鲁木齐 830052；2.新疆农业科学院粮食作物研究所，新疆乌鲁木齐 830091；3.新疆农业科学院墨玉农业实验站，新疆和田 848100）

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中文摘要:

为探明北疆超晚播条件下，冬、春性小麦品种间生育特性及产量的差异，采用田间试验（10月31日播种，冬前不灌水），比较了6个冬性和5个春性小麦品种的生育特性及产量。结果表明，春性品种出苗率明显高于冬性品种，春性品种平均生育期（91.8 d）比冬性品种(95.0 d)短约3.0 d；春性品种总茎数平均峰值（869.3×10⁴·hm^-2）明显高于冬性品种（772.4×10⁴·hm^-2）；叶面积指数和干物质积累量的平均值在春、冬性品种间差异不明显；新冬41、新春6号、新春43号的产量较高，为7 581.6~7 935.6 kg·hm^-2，获得高产的穗数为431.7×10⁴~515.8× 10⁴·hm^-2，穗粒数 31.6~36.3，千粒重46.8~52.8 g。综合考虑产量、出苗率、成熟期等因素，初步认为新春6号、新冬41号、新春43号适合在北疆超晚播。

英文摘要:

To investigate the differences in growth characteristics and yield between winter and spring wheat varieties under ultra-late sowing conditions in northern Xinjiang,a field trail(sowing on October 31 without irrigation before winter) was conducted. The results showed that the emergence rate of spring varieties was significantly higher than that of winter varieties. The average growth period (91.8 d) of spring varieties was about 3.0 days shorter than that of winter varieties(95.0 d). The average peak number of spring cultivars(869.3 ×10⁴ ·hm^-2) is significantly higher than that of winter cultivars(772.4 ×10⁴ ·hm^-2).The average values of leaf area index and dry matter accumulation for spring and winter varieties were not significantly different; the yields of Xindong 41, Xinchun 6 and Xinchun 43 were higher,ranging from 7 581.6 to 7 935.6 kg ·hm^-2. To achieve high yield,the number of spikes ranged from 431.7 ×10⁴ to 515.8 ×10⁴ ·hm^-2; the number of grains per ear ranged from 31.6 to 36.3, and the thousand grain ranged from 46.8 to 52.8 g. Comprehensively taking yield, emergence rate, maturity and other factors into consideration,it is initially suggested that Xinchun 6,Xinchun 43 and Xindong 41 are suitable for super late sowing in northern Xinjiang.

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