西峰黄土高原地温对梨树发育期的影响  

Impact of Ground Temperature to Growing of Pear Tree Period in Loessial Plateau Gansu Xifeng

作　　者：王伟新 

机构地区：[1]甘肃省庆城县气象局,甘肃庆城745100

出　　处：《北方果树》2014年第5期3-6,共4页Northern Fruits

基　　金：甘肃省气象局科研项目(2008-08);甘肃省自然科学基金项目(3ZS051-A25-010);中国气象局项目"风云三号卫星在西北区域干旱监测预警中的应用";中国气象局气象新技术推广项目(CMATG2007Z09)资助

摘　　要：用西峰黄土高原1971—2005年5、10、15、20cm地温和1984—2005年梨树发育期资料,分析了地温的时间变化规律及其对梨树发育期的影响。结果表明,西峰10cm地温,除夏季外,其余季节呈持续升高的趋势,春季增温最明显,变幅也最大;冬季增温幅度次大;秋季增温幅度最小。冬季、春季地温与梨树的各发育期均为负相关,即地温高发育期早,地温低发育期迟。冬季地温与梨树发育期相关最显著的是叶变始期和开花始期,相关系数为-0.41^-0.52,信度为0.05;春季地温与之相关最显著的是开花始期,相关系数为-0.68^-0.69,信度达0.001。春季地温对梨树发育期的影响具有明显的持续性和滞后性,冬季地温对梨树发育期影响有阶段性,春季地温对梨树发育期的影响比冬季明显。With the XiFeng loess plateau 1971-2005 year 5,10, 15,20cm ground temperature and 1984- 2005 the pear tree development period material, has analyzed the ground temperature time variation rule and its to the pear tree development period influence. The result indicated that, XiFeng 10cm ground temperature besides the summer, other seasons assumes the tendency which continues to elevate, spring increases warm most obvious, amplitude also biggest, the winter increases warm scope big, the autumn increases the warm scope to be smallest. The winter, the spring ground temperature and pear tree＇s various development periods are Counter correlation, namely ground temperature high, development period morning, ground temperature low, the development period is late. The winter ground temperature is connected most remarkable is Ye Bianshi the time and blossoms the beginning time, the correlation coefficient is -0.41--0.52, letter is 0.05, spring the ground temperature is connected remarkably is blossoms the beginning time, the correlation coeffi- cient is -0.68 - -0.69, letter reaches 0.001, spring the ground temperature has the obvious endurance to the pear tree development period influence and the lag, the winter ground temperature has gradualness to the pear tree development period influence, spring ground temperature to pear tree development period influence compared to winter obvious.

关 键 词：西峰黄土高原 地温变化特征 梨树发育期 影响分析 

分 类 号：S661.2[农业科学—果树学]