川南丘陵区油茶叶片营养DRIS诊断  

Nutrition DRIS diagnosis of Camellia oleifera leaves in hilly area of South Sichuan

作　　者：杨东生 蔡梦阳 刘恩伯 叶茂翔 李呈翔 牟春燕 YANG Dongsheng;CAI Mengyang;LIU Enbo;YE Maoxiang;LI Chengxiang;MOU Chunyan(Luzhou Academy of Forestry,Luzhou 646000,China;Sichuan Agricultural University,Chengdu 610041,China;Xuyong Forestry and Bamboo Bureau,Luzhou 646000,China)

机构地区：[1]泸州市林业科学研究院,四川泸州646000 [2]四川农业大学,成都610041 [3]叙永县林业和竹业局,四川泸州646000

出　　处：《四川林业科技》2025年第2期45-51,共7页Journal of Sichuan Forestry Science and Technology

摘　　要：对川南丘陵区油茶成林叶片的大、中、微量营养元素进行诊断,探明油茶的营养状况,总结叶片对各元素的需求范围,为川南丘陵区油茶科学施肥提供理论指导。以川南丘陵区油茶成林的叶片为研究对象,测定油茶叶片中的N、P、K、Ca、Mg、Cu、Zn、Fe和Mn 9种营养成分含量,采用DRIS指数法,诊断分析油茶需肥次序,利用高产组叶片养分浓度,建立油茶叶片DRIS营养诊断体系。结果表明:油茶树体需肥顺序为Ca>Zn>Mn>P>Mg>Cu>N>Fe>K;油茶叶片各营养元素含量的适宜范围为:N 10.978~15.456 g·kg^(−1)、P 0.469~1.271 g·kg^(−1)、K 0.959~8.844 g·kg^(−1)、Fe 0.076~0.257 g·kg^(−1)、Zn 8.390~24.477 mg·kg^(−1)、Cu 2.790~5.980 mg·kg^(−1)、Mn 1.151~90.485 mg·kg^(−1)、Ca 2.056~10.054 g·kg^(−1)、Mg 0.796~1.677 g·kg^(−1)。结论:川南丘陵区油茶的K、Fe、N和Cu营养元素相对充足,Ca、Zn、Mn、P和Mg营养元素相对缺乏,为油茶林施肥的同时,应该注意补充Ca、Zn和Mn等中、微量元素肥。The macro,medium and trace nutriet elements in the leaves of mature Camellia oleifera stand in hilly area of South Sichuan were diagnosed,the nutritional status of C.oleifera was investigated,and the suitable fertilizing range of each nutrient was summarized,which provided theoretical guidance for the scientific fertilization of C.oleifera stands in this region.The leaves of C.oleifera sampled from a mature stand in the hilly area of South Sichuan were used for the determination of contents of nine nutrients(N,P,K,Ca,Mg,Cu,Zn,Fe and Mn),and the nutrient requirement order of this C.oleifera stand was obtained by the establishment of the DRIS nutrition diagnosis system for C.oleifera leaves,and the DRIS nutritional diagnosis system for C.oleifera leaves was also built.The results showed that the nutrient requirement order of this C.oleifera stand was Ca>Zn>Mn>P>Mg>Cu>N>Fe>K;the suitable content ranges of various nutrients were obtained,that is,N 10.978-15.456 g·kg^(−1),P 0.469-1.271 g·kg^(−1),K 0.959-8.844 g·kg^(−1),Fe 0.076-0.257 g·kg^(−1),Zn 8.390-24.477 mg·kg^(−1),Cu 2.790-5.980 mg·kg^(−1),Mn 1.151-90.485 mg·kg^(−1),Ca 2.056-10.054 g·kg^(−1),Mg 0.796-1.677 g·kg^(−1).Conclusion:In the hilly area of South Sichuan,these nutrients,i.e.K,Fe,N and Cu were relatively abundant,while the remaining five nutrients,i.e.Ca,Zn,Mn,P and Mg in Camellia oleifera leaves were relatively deficient,which should be taken more consideration when fertilizing.

关 键 词：油茶 DRIS法 营养诊断 川南丘陵区 

分 类 号：S794.4[农业科学—林木遗传育种]