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落叶松落叶病是落松人工林普遍发生的重要叶部病害,蔓延迅速,为害严重。影响该病病情、左右该病流行的主要因素是气象因子。本文根据敦化市1971～1982年气象与病情历史资料,通过求偏回归平方和与逐步回归等方法,找出6、7月份阵水量及相对湿度,4、5月份平均气温为影响落叶松落叶病病情的主要因子,为预测预报及防治工作提供了可靠依据。
Larch deciduous disease is an important phytoplankton disease that occurs frequently in Pinus densiflora plantation, which spread rapidly and seriously. Affect the disease condition, so the prevalence of the disease is the main factor in meteorological factors. Based on historical data of meteorological and disease conditions from 1971 to 1982 in Dunhua City, we find out the amount of water and relative humidity in June and July through the methods of partial return squared sum regression and stepwise regression. The average temperature in April and May is the influence of larch deciduous disease The main factors of the disease provide a reliable basis for forecasting and prevention.