【作者】 唐颢； 吴家尧； 黎健龙； 吴利荣； 唐劲驰；

【Author】 TANG Hao,WU Jia-yao,LI Jian-long,WU Li-rong,TANG Jing-chi~* (Tea Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China)

【机构】 广东省农业科学院茶叶研究所；

【摘要】 为了探究滴灌施肥在茶园应用的综合效应,以常规施肥作为对照,设计了3个不同氮肥用量(30kg/667m~2、20kg/667m~2、10kg/667m~2),研究了滴灌施肥对茶叶产量、品质及土壤性状的影响。结果表明,与对照相比,滴灌施肥处理增产显著,茶叶总产量增加3.43%～9.29%,但茶叶品质差异不显著。施肥量与茶叶产量呈现较明显的正相关,以年施氮量20～30kg/667m~2产量较高。滴灌施肥方式下,茶树成熟叶含氮量显著高于对照,说明滴灌施肥氮素利用效率高于常规施肥;成熟叶含氮量季节性差异明显,以秋茶最高,夏茶次之,春茶最低,春茶产量所占比例高,氮素消耗多,应注重春茶施肥。不同施肥方式间成熟叶的磷、钾含量差异不显著。不同施肥处理对土壤pH值影响显著,滴灌施肥处理的土壤pH值比常规施肥高,表明滴灌施肥通过提高氮肥的利用效率而有利于减弱无机氮对土壤的酸化作用。更多还原

【Abstract】 In order to explore integrated effect of fertigation on tea production,with conventional fertilization as control,designed three different nitrogen(N) application(30kg/667m~2,20kg/667m~2, 10kg/667m~2),researched the effects of the drip irrigation on tea yields and quality and soil character.The results showed that compared with the control,fertigation increased tea production significantly,it increased 3.43%～9.29%.but no significant difference in the quality of tea. Fertilizing and tea production showed a more pronounced positive correlation,annual nitrogen input of 20～30kg/667m~2 is better for tea yields.As mature leaf nitrogen content is concerned, fertigation model was significantly higher than control,indicating nitrogen fertilizer use efficiency of drip irrigation was higher than that of conventional fertilization,mature leaf N content with significant seasonal variations,the highest in autumn tea,summer tea the second,the minimum spring tea,spring tea production accounted for the higher proportion in total output,Corresponding tea tree consumed more nitrogen in spring,so should pay attention to spring fertilization.Mature leaves of different fertilization between the nhosphorus(P),notassium(K)content was not significant.Different fertilization treatments effected on soil pH significantly,soil pH of fertigation higher than that of conventional fertilizition,indicating that fertigation increased N fertilizer use efficiency,and conducive to weakening the inorganic N on the role of soil acidification.更多还原