蓄水坑灌苹果园冬季土壤温度分布动态预测模型

发布时间：2018-08-19 18:27

【摘要】：以蓄水坑灌冬季土壤温度实测资料为基础,建立了以距离蓄水坑壁径向5 cm处的分层土壤最低温度、坑内平均温度、地表温度和沿坑壁的径向距离输入,以距蓄水坑坑壁15、25和35 cm处分层土壤最低温度为输出,拓扑关系为11-13-8的BP-WSPI-T模型,对蓄水坑灌果园冬季土壤最低温度分布特征进行定量预测,并采用田间实测数据对模型进行率定和验证。结果表明:BP-WSPI-T模型在对距离蓄水坑壁径向15、25和35 cm处分层土壤最低温度预测时的平均相对误差分别为8.7%、9.4%、7.3%;土壤温度整体预测的平均相对误差为8.5%,模型预测精度较好。模型可以较好对蓄水坑灌冬季土壤温度分布进行预测。
[Abstract]:Based on the measured data of soil temperature in water storage pit irrigated in winter, the minimum temperature of stratified soil, the average temperature in the pit, the surface temperature and the radial distance along the wall of the pit were established at the distance of 5 cm from the wall of the storage pit. Based on the BP-WSPI-T model with a topological relationship of 11-13-8, the distribution characteristics of the lowest soil temperature in winter in the irrigation orchard of the storage pit were quantitatively predicted with the minimum temperature of the stratified soil at 1525 and 35 cm from the wall of the reservoir pit as the output and the topological relationship being 11-13-8. The model was determined and verified by field data. The results showed that the average relative error of the 1: BP-WSPI-T model in predicting the minimum temperature of stratified soil at a distance of 1525 cm and 35 cm from the reservoir wall was 8.7 / 9.4and 7.3respectively, and the average relative error of the whole prediction of soil temperature was 8.5 and the prediction accuracy of the model was better. The model can be used to predict the soil temperature distribution in water storage pit irrigation in winter.
【作者单位】：太原理工大学水利科学与工程学院;晋中学院;
【基金】：国家自然科学基金资助项目(51579168、51249002) 山西省自然科学基金资助项目(201601D011053) 山西省高等学校创新人才支持计划资助山西省科技攻关项目(20140311016-6)
【分类号】：S152.8;S275

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