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春季降水对发生期有较大影响．可根据３月份气温．１、２月份降水量和１、２、３月份的雨日预测成虫发生期。１、２月份气温、先一年７、８月份和当年１、２月份的降水量与吸浆虫种群发生的关系密切．这６个因素可以分为两个时段：一年中最热的月份和一年中最冷的月份．总的趋势是雨水多、气温低有利吸浆虫发生。春季降水量的多少与当年危害无明显关系．根据上述因素建立了发生期和发生量估计模型．
Spring precipitation has a greater impact on the occurrence. May be based on the temperature in March. The precipitation in January and February and the rainy days in January, February and March predicted the occurrence of adults. The temperature in January and February is closely related to the population of Midazolam in July and August of the first year and the precipitation in January and February of the same year. These six factors can be divided into two periods: the warmest month of the year and the coldest month of the year. The general trend is more rain, low temperature beneficial Midge occurs. There is no obvious relationship between the amount of precipitation in spring and the hazard in the current year. Based on the above factors, an estimation model of occurrence and occurrence was established.