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作者	单位
万映秀，张志科，曹文昕，张琪琪，李炎，张平治	（1.安徽省农业科学院作物研究所，安徽合肥 230031； 2.安徽皖垦种业股份有限公司，安徽合肥 230061）

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中文摘要:

为了解安徽省不同生态类型小麦在青海平安县夏繁自然加代的播期范围，于2013年在安徽省夏繁工作站（青海省平安县白家村，海拔为2 300 m）进行分期播种试验。结果表明，在自然条件下，半冬偏冬小麦品种在3月20日前、半冬性小麦品种在3月30日前、半冬偏春性小麦品种在4月19日前、春性小麦品种在5月6日前、强春性小麦品种在5月20日前播种均能正常拔节抽穗，且能收获到成熟种子。在相同类型的小麦品种中，穗粒数对播期的响应一致，单株穗数、千粒重及株高对播期的响应不一致。根据供试品种的抽穗率及抽穗期推断出各品种冬性的强弱顺序为烟农19＞皖麦52＞（皖麦38、淮麦22、邯郸6172）＞济麦22＞泛麦5号＞偃展4110＞阿勃（CK）＞（扬麦158、宁麦13）。

英文摘要:

In order to know the best sowing time of different ecological types of wheat varieties from Anhui for summer natural reproduction in Ping'an county, Qinghai province, wheat materials were sowed on different dates at the Anhui Summer propagation station (located in the Baijia village, Ping'an county, Qinghai province, 2 300 m above sea level). The results indicated that under natural conditions, the wheat materials with strong winterness, winterness, weak winterness, springiness and strong springness could normally head and mature when they were sowed before March 20, March 30, April 19, May 6 and May 20, respectively. The ear grain number is response to sowing date of the same type of wheat varieties,while the responses of ear number per plant, thousand seed weight and plant height were not with it grain number.According to heading rate and date, the winterness of the wheat cultivars in this study may be Yannong 19＞Wanmai 52＞(Wanmai 38, Huaimai 22,Handan 6172)＞Jimai 22＞Fanmai 5＞Yanzhan 4110＞Abodanza(CK)＞(Yangmai 158, Ningmai 13).

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