摘要
研究表明,1990～1998年新疆6月上旬至8月中旬的降雨量和降雨日数是影响哈密瓜霜霉病流行的关键因素。建立了最终病情指数逻辑斯蒂转换值与降雨量、降雨日数和整体药剂防效间的多元回归方程,按照此方程确定了该病流行程度的气象因子预测指标。1997～1998年应用气象预报信息,依据此模型对伽师县、五家渠一○三团哈密瓜霜霉病流行程度的预报和实报结果都与田间实际病情一致。
In 1990 - 1998, the result showed that the key factors influencing epidemic of Downy Mildew of Ha-mi Melon were rainy days and rainfall during the first ten days of June and the middle of August in Xinjiang. The multiple regression equation on epidemic of Downy Mildew of Hami Melon has been established . Logistic value of the disease index , rainy days, rainfall and control effect of fungicides, were involved into the equation. According to the equation, the index of the weather forecast on epidemic levels of Downy Mildew of Hami Melon is firmly established . The forecast result on epidemic of Downy Mildew of Hami Melon tallied absolutely with the actual result of disease development via applying this model in
103Tuan and Jiasha county during 1997 - 1998.
出处
《中国农学通报》
CSCD
1999年第6期27-30,共4页
Chinese Agricultural Science Bulletin
基金
新疆科委自然科学基金项目
