南方农业学报2018，Vol.49Issue(2)：313-319,7.DOI:10.3969/j.issn.2095-1191.2018.02.17
基于DRIS法的樟树人工林营养诊断
Nutrient diagnosis of Cinnamomum camphora(L.)Presl plantation based on DRIS
摘要
Abstract
[Objective]The nutrient diagnosis of Cinnamomum camphora(L.)Presl plantation was carried out by dia-gnosis and recommendation integrated system(DRIS)to provide reference for high-efficiency cultivation of C.camphora plantation.[Method]According to DRIS graphic method,the optimal range for each nutrient diagnostic parameter and or-der of nutrients requirement urgency in low yield group were obtained.And the order of nutrients requirement urgency and nutrient imbalance index(NII)of C. camphora in various sites were obtained by DRIS index. Based on the results,C. camphora DRIS index grading standards for nutrient elements were initially developed.[Result]The optimum ranges for nutrient diagnosis of C.camphora plantation were as follows:N/P 3.795-5.689,K/P 1.761-2.405,K/N 0.396-0.510,N/Ca 0.677-0.856,Mg/N 1.022-1.306,Ca/P 5.255-7.167,Mg/P 4.516-6.222,K/Ca 0.305-0.373,Mg/K 2.371-2.819 and Mg/Ca 0.788-0.957.According to the gap between ratios of various nutrient elements in low yield group and the optimal range,the order of nutrients requirement urgency of C.camphora low yield group was P>Ca>N>K>Mg.P,Ca and N con-tents were deficient,but Mg content was excessive.Average NII values of high yield group and low yield group were 3.748 and 7.540 respectively,nutrients in the high yield group was relatively balanced.According to DRIS preliminary classification norms,the suitable ranges of DRIS indexes for N,P,K,Ca and Mg were-0.838-0.185,-0.903-0.602,-0.154-0.941,-0.790-0.329 and-0.357-0.985 respectively.[Conclusion]According to DRIS diagnosis,N,P and Ca contents in C. camphora plantation in cities of Jiangxi are deficient,and Mg content is excessive. Through diagnosis of order of nu-trients requirement urgency and the established DRIS index classification norms,balance of nutrition in C. camphora plantation can be diagnosed,and provide guidance for fertilizing of C.camphora plantation in production.关键词
樟树/人工林/营养判断/诊断施肥综合法(DRIS)Key words
Cinnamomum camphora(L.)Presl/plantation/nutrient diagnosis/diagnosis and recommendation inte-grated system(DRIS)分类
农业科技引用本文复制引用
张龙,郑永杰,伍艳芳,邱凤英,刘新亮,江香梅..基于DRIS法的樟树人工林营养诊断[J].南方农业学报,2018,49(2):313-319,7.基金项目
国家重点研发计划项目(2016YFD0600605) （2016YFD0600605）
江西省林业科学院财政专项重大项目(2017512701) （2017512701）
