论文部分内容阅读
采用运筹学决策树方法,通过归纳冬小麦各生育阶段各种因素的综合影响,建立了冬小麦冻害预报系统。系统分为品种、播种、冬前条件、越冬条件、早春条件5个层次,并以冬小麦自身抗寒力(品种,生长状况等)和环境因素(土壤,气象条件,田间管理等)为指标,判断预测麦苗抗寒力、越冬冻伤情况及冻害程度,预测结果均以5个等级描述,系统按照预测的冻害级别给出不同时段冻害预防的补救措施和建议,具有较高的应用价值。
Using operational research decision tree method, the winter wheat frost damage forecasting system was established by summarizing the comprehensive effects of various factors of winter wheat. The system is divided into 5 categories: variety, sowing, pre-winter conditions, overwintering conditions and early spring conditions. Taking cold hardiness of winter wheat (variety and growth condition), environmental factors (soil and meteorological conditions, field management, To predict and forecast the cold hardiness, winter frostbite and frostbite degree, the prediction results are all described in 5 levels. The system provides the remedial measures and suggestions for frost damage prevention in different periods according to the predicted frost damage level, which has high application value.