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为了给黑龙江省生态气候条件下春小麦品种的优质栽培提供参考依据，选用黑龙江省优质春小麦龙麦26和克旱16为试验材料，分5个播期（4月10日、4月17日、4月24日、5月1日、5月8日）和3个密度（龙麦26为每公顷500万、600万、700万，克旱16为每公顷700万、800万、900万）播种，收获后进行品质分析。结果表明，两品种基本都以5月8日播种的品质较好，籽粒蛋白质和面粉面筋含量都极显著高于早播，面团流变学参数也都显著优于早播，而晚播对容重的影响不利；密度对两个不同小麦品种的各个品质性状均无显著影响。综合各品质分析结果，适当晚播有利于改善黑龙江省春小麦品质。

英文摘要:

For the feasible sowing date and tolerance for high density in high quality spring wheat to ecology and climate characters in Heilongjiang province, high quality spring wheat (Longmai 26 and Kehan 16) were used as trial materials, sown in 5 different sowing dates and 3 different density, quality analysis were done after harvesting. Results showed that quality of the two varieties sown on May 8 was better than that of early sown and with grain protein content, flour gluten content and flour rheological parameter better significantly, but the test weight was less than that in late sown. It is indistinct that density affects each quality parameter. Integrating the results of quality analysis, spring wheat quality was improved in feasible late sown, and Longmai 26 was suitable for planting in Heilongjiang province, effects of density is indistinct.

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