坡向和海拔对福建寿宁锥栗产量的影响

采用随机区组设计法在福建寿宁县对锥栗（Castanea henryi）与不同坡向、海拔之间的关系进行研究，结果如下：锥栗在不同坡向、海拔之间的地径、单位面积的栗苞数和栗果质量均存在极显著差异，而坡向和海拔之间的交互作用对栗苞数和质量有显著影响。锥栗的地径、单位面积的栗苞数和栗果质量在不同坡向间的排序均为阳坡〉半阳坡〉阴坡；随海拔的升高，地径逐渐减小，单位面积的栗苞数和栗果质量先增大再减小，前者最大值出现在海拔700m，后者最大值出现在海拔600m。综合来看，在寿宁种植锥栗以阳坡、海拔600—800m为宜，产量较高，应避免选择阴坡，海拔不宜低于500m或高于900m。

Impacts of Aspect and Elevation on Yield of Castanea henryi in Shouning, Fujian

The effects of aspect and elevation on Castamea henryi in Shouning, Fujian, were studied using randomized block method. Three indexes including diameter at ground, numbers of flower and mass of fruit per hectare were chosen. There were significant differences of＇all three indexes among different aspects and elevations. The interaction of aspect and elevation were significant on numbers of flower and mass of fruit per hectare. The order of diameter at ground, numbers of flower and mass of fruit per hectare was the same ： sunny slope 〉 half sunny slope 〉 shady slope. Along with elevation increased, diameter at ground decreased, while numbers of flower and mass of fruit per hectare increased first and then decreased, with maximum at elevation of 700 and 600 m, respectively. The yield of C. henryi in Shouning was higher in sunny slope at 600--800 m elevation. Shady slope as well as the elevation lower than 500 m and higher than 900 m were not appropriate to plant C. henryi.