摘要
通过对小麦白粉病１４ａ的发生情况研究分析，初步明确影响豫北麦区小麦白粉病流行的主要因素和主要预测因子是当年早春３月中旬的菌源基数、３～４月份降水量和日照时数，提出了病害中期预测的综合分析预测法和预测指标，建立了病害发生程度预测式，经１９９４～１９９５年预测检验。
Information about occurrence of wheat powdery mildew (Erysiphe graminis Dc. f. sp. tritici E Marshal) in Northern Henan Province from 1980 to 1995 was analysed. The results showed that the main epidemic and key prediction factors were basic number of germs in the middle of March, and the precipitation and sunshine hours from March to April in that year. The methods of synthetic analysis and forecasting index for mid term prediction of the disease were proposed. The prediction model of occurrence degree of the disease was also recommended, and the predicted results were compatible with the observations in 1994-1995.
出处
《植物保护》
CAS
CSCD
北大核心
1996年第6期11-14,共4页
Plant Protection
基金
"八五"攻关课题
关键词
小麦
白粉病
中期预报
流行程度
wheat powdery mildew, mid term predction, epidemic degree
