对吐鲁番沙漠植物园中自然分布的疏叶骆驼刺〔Alhagi sparsifolia (B .Keller et Shap .) Shap .〕的物候进行了 5a连续的观测 ,编绘了物候图谱。运用主成分分析方法 ,对影响疏叶骆驼刺物候的温度和光照因子进行了分析 ,揭示出与其主要物候期关系最为密切的气象因子 ,表明不同的物候期 ,诱导物候表现的主导因子不同 :诱导疏叶骆驼刺萌动期的主要气象因子为旬均最高温、旬均最低温和累计日照时数 ;诱导开花期的主要气象因子为≥ 5℃积温、花期平均日照长度和盛期旬均温 ;诱导果熟期最主要的环境因子有始熟旬均温、累积日照时数和全熟旬均温。

The phenological observation of Alhagi sparsifolia (B .Keller et Shap .)Shap .was carried on for
five years at Turpan desert botanical garden .The phenospectrum chart was made .By the principal component analysis (PCA)of light and temperature factors influencing phenology , it was revealed that the environmental factors had the close relation to the principal phenophase of A.sparsifolia , and the principal induced factors were various in different phenology .The principal induced factors of budding period were the average highest temperature of ten days , the average lowest temperature of ten days and the accumulated hours of sun lighting ;those of flowering period were ≥5 ℃ accumulated temperature , the average hours of sun lighting and the average temperature of ten days in bloom ;those of fruit period were the average temperature of ten days at the beginning , accumulated hours of sun lighting of fruit period and the average temperature of ten days during fruit maturity .