海拔高度对‘香玲’核桃生长结果习性的影响

以引种的‘香玲’核桃为试材,对襄阳市保康县不同海拔区域的核桃生长结果习性进行调查研究,结果表明:在相同的生长年限下,引种的‘香玲’核桃平均树高、平均地径在海拔700~800 m呈现最大值,单株冠幅面积和单株结果数量在600~700 m呈现最大值,700~800 m产量最不稳定,病果率在海拔600~700 m最低;在海拔800 m以上,随着海拔的升高,树体平均高度、树体平均地径、单株冠幅面积和单株结果数量均呈现下降的趋势。因此,保康县600~800 m区域是最适宜‘香玲’核桃引种的区域。

Effects of Altitude on Growth and Fruiting Characterization of Juglans regia cv.‘Xiang ling’

Juglans regia cv.‘Xiang ling’were used to investigate the growth and fruiting characters of the walnut tree at different altitudes in Baokang County in Xiangyang City.The results showed that average height and average ground diameter of the same age trees were the highest in the altitude range from 700 to 800 meters ;the crown width and fruit-ing number per individual was the highest in the altitude range from 600 to 700 meters;the yield was the most variable in the altitude range from 700 to 800 meters;the ratio of diseased fruits was the least in the altitude range from 600 to 700 meters.At the altitude above 800 meters,the average height,ground diameter,crown width and fruiting number per in-dividual were all decreasing along with the raise of altitude.In a word,the altitude range from 600 to 800 meters is the most suitable cultivation area for Juglans regia cv.‘Xiang ling’.