宁夏引/扬黄灌区玉米子粒脱水模型的构建与应用

利用宁夏银川市永宁县18个玉米品种子粒含水率动态测试数据,构建了不同品种子粒含水率与授粉后活动积温的关系模型,以2014-2016年在宁夏银川市永宁县（引黄灌区）和吴忠市同心县（扬黄灌区）两地11点次的玉米子粒含水率实测数据进行模型校验的结果表明,模型预测结果与实测值的相符性达到极显著水平（R ²=0.8397）。结合2008-2017年永宁县和同心县气象数据,模拟了供试玉米品种达到适宜机械粒收的目标子粒含水率日期,分析了不同类型玉米品种在宁夏引/扬黄灌区实行机械粒收的可行性,为当地推广玉米机械粒收、优选适宜机械粒收的优良品种提供支持。

The Construction and Application of Maize Grain Dehydration Model in Yellow River Irrigation and Pumping Irrigation District in Ningxia

The dynamic data of grain moisture contents of 18 maize cultivars surveyed in Yongning county of Ningxia were used in this study to build up a model between the grain moisture content and the accumulated temperature after pollination. By using the 11 measured data of grain moisture content in Yongning County, Yinchuan (Yellow River Irrigation Area), and Tongxin County, Wuzhong (Yellow River Pumping Irrigation District) in 2014-2016 to verify the model, the results showed that the consistency between the model prediction and the measured values reached a very significant level (R ²=0.8397). The dates reaching the target grain moisture content suitable for mechanical grain harvest of cultivars used in this study were simulated in combining with the meteorological data of Yongning and Tongxin from 2008 to 2017. The feasibilities of implementing mechanical grain harvesting for different varieties were analyzed in Yellow River Irrigation Area and Yellow River Pumping Irrigation District. This study provides support for promoting the development of local mechanical grain harvest and the collection of cultivars that are suitable for mechanical grain harvest.