摘要
在以往小麦条锈病周年侵染循环研究的基础上,进一步探讨了全省小麦条锈病周期流行规律,组建了6年周期的灰色灾变预测模型GM(1,1):y=496.8e0.4353k-414.4,则可预测出周期内小麦条锈病流行程度和流行面积的理论值。在以往中短期预测研究的基础上,采用工作为校正系数,通过模糊数学综合评价模型(y=y·x),则可预测出周期内各年度的实际流行程度和流行面积。
For predictlon of the epidemlc regular patten of wheat stripe rust in gansu province at 6 years epidemlc period regular pattern was establish the method of Grey system. The epidemic development was described by GM (1. 1 ): y = 496. 8e0. 4353k-414. 1 in six years epidemic period of wheat stripe rust. Apply the Fuzzy Mathematic: y = y, x, every year epidemic degree was described.
出处
《植物病理学报》
CAS
CSCD
北大核心
1998年第4期299-302,共4页
Acta Phytopathologica Sinica
关键词
小麦
条锈病
周期流行规律
预测
Wheat stripe rust Periodic epidemic regularity pattern Prediction