珠三角桃树摘叶期和气象因子对桃花应节盛花的影响  

Effects of leaf-picking date and meteorological factors on peach-blossom's full flowering in Spring Festival in Pear River Delta.

作　　者：杜尧东[1] 丘振中 王广伦[3] 黄光民[3] 

机构地区：[1]广东省气候与农业气象中心,广州510080 [2]广东省佛山市南海区气象局,佛山528200 [3]广东省农业气象试验站,佛山528200

出　　处：《生态学杂志》2006年第1期105-107,共3页Chinese Journal of Ecology

基　　金：广东省气象局重点项目;佛山市南海区科技资助项目(200202;200203)

摘　　要：根据不同摘叶期、桃花盛花期观测资料和同期气象资料,研究了摘叶和气象因子对桃花应节盛花的影响。结果表明,摘叶期和盛花期的关系以分段线性方程拟合效果最佳,12月12日以前,线性方程的斜率为0.7594,12月12日以后,线性方程近似水平。11月中旬至盛花期平均气温、花前50 d总日照时数是桃花盛花期出现迟早的关键气象因子。它们与摘叶期至盛花期天数的相关系数分别为-0.62和-0.45,经检验,差异达到显著水平。在此基础上,利用多元线性回归分析,建立了桃花适宜摘叶期预测模型。样本回代检验79.2%的样本误差在2 d以内,2004年试报效果也较好。Based on the data of the dates of picking off leaves and full flowering phase of peach-blossom and related meteorological conditions in Pear River Delta, this paper studied the effects of leaf-picking off date and meteorological factors on peach blossom＇ s full flowering in Spring Festival, The results showed that sectional simulation on the relationship between leaf-picking off date and full flowering phase could obtain optimal fitting results, which presented linear equation of slope 0. 7594 and approximately horizontal line, when the date of picking off leaves was before and after 12 December, respectively. The key meteorological factors affecting the initiatory time of full flowering were the average temperature during the mid-tea days of November to full flowering date, and the total sunlight hours of fifty days before full flowering phase. Their correlation coefficients with the days from picking off leaves to full flowering phase were - 0.62 and - 0.45, respectively （P 〈 0.05）. A forecasting model of suitable leaf-picking off date was established by multivariate linear regression method. The sample fitting verification of the model indicated that the errors of 79.2 % samples were less than two days, and the result of test prediction in 2004 was also good.

关 键 词：摘叶 气象因子 桃花花期 影响 珠三角水平线 

分 类 号：S685.99[农业科学—观赏园艺]