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近十几年来,地处鲁西北地区的桓台县年平均气温呈上升趋势,冬半年气温上升较明显,冬小麦的生长受其影响,冬前旺长和绿体越冬时常出现,冬小麦抗低温能力受到影响,容易成灾。降低冬小麦冬前旺长几率,可以通过选取适应气温变化的播种时间来增强冬小麦抗低温能力。将冬小麦播种出苗所需要的日平均气温、播种至停止生长期积温、播种到收获所需总积温等3个农业气象指标,与近10年气温变化统计比较,发现在气温升高趋势下,冬小麦适宜播种的最佳时段比传统的播种时间明显后推。
In recent ten years, the annual average temperature in Huantai County, located in the northwest of Shandong Province, has been on an upward trend. The temperature rise in winter is more obvious. The growth of winter wheat is affected by it. Affected, easy to disaster. Reduce the risk of winter wheat before winter, we can choose to adapt to changes in temperature sowing time to enhance the ability of anti-low-temperature winter wheat. The results showed that in the trend of increasing temperature, winter wheat (Triticum aestivum L.), winter wheat (Triticum aestivum L.), wheat (Triticum aestivum L.) The best sowing time is obviously better than traditional sowing time.