广西科学2011，Vol.18Issue(3)：298-303,6.
桂北南方优质早熟梨生理异常现象成因研究
Research on the Cause of Physiologic Abnormity of South-Early-Ripening-Pear in North Guangxi
摘要
Abstract
Two cultivars of South-Early-Ripening-Pear, Pyrus spp. Cv. Fengshui and Pyrus spp. Cv. Cuiguan , were used as experimental trees to investigate on their cultural environments,cul-tivar,water and fertilizer managements,as well as the variation of contents of some main nutrition elements (N,P,K) in the leaves within 6 months before and after physiologic abnormity occurrence,and then the relationships of these factors were analyzed with the forming of physiologic abnormity in North Guangxi. The results showed that physiologic abnormity was apt to arise in Pyrus spp. Cv. Fengshui. The following factors would induce the physiologic abnormity to occur earlier and more seriously,such as higher temperature in autumn and winter,high temperature and arid environment in the junction period of summer and autumn,cultivar genetic characteristics, plant diseases and insect pests, inadequate integrated management of the pear orchard,etc. Especially of the Pyrus spp. Cv. Fengshui trees in bad management orchard,the physiologic abnormity occurred 1~2 month earlier,and the index of reflorescence was 80% and a 55% higher than that of good management one. The contents of N,P,K in leaves of Pyrus spp. Cv. Fengshui were 21. 88 g/kg,0. 197 mg/kg,l. 48 mg/kg in serious physiologic abnormity orchard,and 19. 52 g/kg、0. 176 mg/kg、1.36 mg/kg in slight physiologic abnormity one. There were no significant differences on the contents of N,P,and K between the two types of orchards. Thus there was no direct correlation between physiologic abnormity and the contents of mineral nutrition elements within 2~4 months before earlier defoliation.关键词
早熟梨/生理异常/早期落叶/二次开花/元素分析Key words
early-ripening-pear, physiologic abnormity, earlier defoliation, reflorescence, ele-ment analysis分类
农业科技引用本文复制引用
赵志国,黄宁珍,唐凤鸾,付传明,石云平,黄志琼..桂北南方优质早熟梨生理异常现象成因研究[J].广西科学,2011,18(3):298-303,6.基金项目
广西科技攻关项目(桂科攻0992011-9)资助. （桂科攻0992011-9）
