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１９９４～１９９６年河北省迁安县蔡园乡大气中板栗花粉散布特征研究表明，不同年份板栗花期有早有晚，大气中的花粉浓度变化悬殊；大气中板栗花粉浓度受花期气温和盛花末期前降水影响较大，受日照影响较小；盛花期花粉浓度与板栗产量的相关系数为０．９９８～０．９９９；根据两年相关关系建立的预报模式对第三年产量进行了预报，预报期比收获期提前２个月，预报结果最大误差５．７％，最小误差１．１３％；多数误差均低于４％；运用花粉分析预报板栗和其它果品及农作物产量是一种投入少、预报期早、预报精度高的预测方法。
From 1994 to 1996, the pollen dispersal characteristics of chestnut in Caiyuan Township, Qian’an County, Hebei Province showed that there were early and late flowering of chestnut in different years and the pollen concentration in the atmosphere varied greatly. The atmospheric pollen concentration in chestnut was influenced by the flowering temperature and the pre- The correlation coefficient between pollen concentration and chestnut yield in full flowering stage was 0.998-0.999; the yield in the third year was predicted according to the forecasting model established by the correlation between two years, the forecast period ratio The harvesting period was 2 months ahead of schedule, with the maximum error of 5.7% and the minimum error of 1.13%. Most errors were less than 4%. Using the pollen analysis to forecast the yield of chestnut and other fruits and crops was a less investment, Early, forecasting accuracy of the prediction method.