不同施肥处理芳樟N、P、K元素的DRIS营养诊断  

The DRIS Nutrient Diagnosis Analysis of N,P,K in Cinnamomum camphora var. iinaloolifera Under Different Fertilization Proportions

作　　者：邹智滢 张国防[1] 冯瑜[1] 李左荣[1] 许敏铭 

机构地区：[1]福建农林大学林学院,福建福州350002

出　　处：《西南林业大学学报（自然科学）》2015年第5期32-36,共5页Journal of Southwest Forestry University：Natural Sciences

基　　金：福建省林业厅种苗科技攻关项目(k85130001)资助;科技部农业成果转化项目(1C4005002)资助;福建省五新项目(FKY018001)资助

摘　　要：以芳樟1年生苗为对象,用N、P、K三元二次正交旋转组合设计试验,对芳樟不同器官的N、P、K元素含量进行测定,计算相应系数并用诊断施肥综合法（DRIS）、图解法和指数法对N、P、K需求关系进行分析。通过DRIS图解法得出：N、P、K三元素最佳比值范围P/N=0.141 4~0.094 8、K/N=0.174 4~0.153 0、P/K=0.836 7~0.597 9,在所有处理中处理19、20的养分处于平衡状态;通过DRIS指数法得出,处理15~20的各营养指数与0最为接近,表明这6个处理的养分比较平衡,与图解法的结果一致。图解法与指数法均说明芳樟对N的需求量相对较大,对P的需求次之,对K的需求相对较弱。Made one-year-old Cinnamomum camphora var. iinaloolifera as research object and used the quad- ratic orthogonal rotational combination design with three factors, N, P and K content of different organic was meas- ured to calculated the coefficient of variance, and then analyzed the demands of N, P and K by applying DRIS, graphical index method. The optimal pair wise ratios of N, P and K were determined as P/N = 0. 141 4 - 0. 094 8, K/N =0. 174 4 -0. 153 0, P/K =0. 836 7 -0. 597 9 from the DRIS diagrams. It indicated that the equilibrium was achieved for methods 19 and 20. The DRIS index was in accordance with the DRIS diagram by showing the fact that all nutrient indexes of methods 15 -20 were close to zero which indicated the nutrition were relatively balanced for these 6 methods. Therefore, it was concluded the demands in order from greatest to least was N, P, and K proved by both DRIS diagrams and DRIS index analyses.

关 键 词：芳樟 施肥处理 营养诊断 DRIS 

分 类 号：S723.7[农业科学—林木遗传育种]