气候与七个杉木种子园产量的关系

作者分析了气候因子对浙闽2省7个杉种子园产量的影响,发现对浙江影响最大的物候期为撒粉盛期;影响较大的气候因子分别为:浙西南相对湿度,次为雨日、雨量、日照时数;浙西气温、雨量、相对湿度;浙东雨日、雨量;浙西北气温、次为雨量、雨日。但闽北邵武卫闽种子园影响产量最大的是处于盛夏的物候期,影响较大的气候因子为雨量、相对湿度和气温;授粉盛期影响最大的因子是相对湿度。也就是说造成低产的主导因子在浙西北和浙西是授粉期低温多雨;浙江其它地区为授粉期多雨高湿度;闽北邵武为盛夏干旱高温。气候影响最明显的时期为盛果期。根据撒粉盛期气候预测浙江6个杉木种子国产量,精度可达70％左右;根据盛夏气候预测闽浙7个种子园产量,精度约57％,

The Relationship between the Climate and the Yield of the Seven Chinese Fir Seed Orchards in Zhejiang and Fujian Provinces

The effect of climate upon the yield of the seven Chinese fir seed orchards in the stated two provinces have been analysed. The result shows that the climate has the most effect on full pollination stage in Zhejiang province, with the biggest affecting factors in the south-west Zhejiang being air temp., followed by rainy days, rain fall and sunshine hours; temp., rain fall and relative humidity in west Zhejiang;rainy days and rain fall in east Zhejiang; and temp.,rainy days and rain fall in north-west Zhejiang. But the most affected stage is middle-summer in Weimin Seed Orchard of northern Fujian, with the biggest affecting factors being rain fall, relative humidity and air temp. As for the pollination stage in this seed orchard, the greatest affecting factor is the relative humidity. The climate has the most effect on full fruiting period. The yield of six seed orchards in Zhejiang is forecasted according to the climate factors in full pollination stage annually, with the precision being about 70% on average; and according to the factors of middle-summer of the seven seed orchards in the two provinces, its forecast precision is about 57%.