从2013年小麦穗部冻害看调整小麦种性布局的重要性

目的]从2013年小麦穗部冻害角度出发,分析调整小麦种性布局的重要性。方法]介绍了淮北地区2012年小麦播种和生长发育情况,分析了该地区1990年以来小麦穗部冻害发生情况,并从2013年小麦穗部冻害出发有针对性地提出了防御对策。结果]不同种性的小麦品种遇到低温寒流受冻程度不同,冬性和半冬性(偏冬)小麦品种抗寒能力比春性和偏春的半冬性品种强,受冻程度相对较轻。结论]生产上应扩大冬性和偏冬的半冬性小麦品种的播种面积,提高抗御小麦穗部冻害的能力。

The Importance of Adjusting Wheat Variety Allocation Based on the Freezing Injury in Wheat Spike in 2013

Objective] The aim was to analyze the importance of adjusting wheat variety allocation based on the freezing injury in wheat spike in 2013.Method] The sowing and growth conditions of wheat in Huaibei area in 2012 were introduced;the occurrence conditions of freezing injury in wheat spike in Huaibei area since 1990 were analyzed,and the defensive countermeasures based on the freezing injury in wheat spike in 2013 were put forward.Result] Different varieties of wheat showed different degrees of freezing injury when they met low temperature and cold current,among them winterness and semi-winter wheat varieties had stronger cold-hardiness than springness or semi-spring semi-winter wheat varieties,and had relatively light freezing injury.Conclusion] The sowing area of winterness and semi-winter wheat varieties should be enlarged in production so as to improve the ability of defending freezing injury in the spike of wheat.