西北林学院学报2011，Vol.26Issue(5)：127-130,169,5.
陕西富平杏叶片营养诊断研究
Foliar Nutritional Diagnosis of Apricot Tree (Armeniaca vulgaris) at Fuping in Shaanxi
摘要
Abstract
Using nutrient diagnosis and diagnosis and recommendation integrated system (DRIS)>we examined nutritional conditions of N, P, K, Ca and Mg in the leaves of apricot tree growing in Fuping Country, Shaanxi Province. Suitable ranges of different minerals were determined as N: 2. 163%-2. 773%; P: 0. 352%-0. 428%; K:2.218%~2. 804%; Ca: 3. 340%-3. 994%; Mg: 0.535-0.645%. DRIS diagnoses parameters were established as P/N, N/K, N/Ca, Mg/K, P/K, P/Ca, P/Mg, K/Ca, Mg/K, Mg/Ca and so on. The coefficient of variation (CV) of high yield orchards (9. 344% -12. 356%) was obviously lower than those of low yield orchards (20. 193% -27. 770%). According to DRIS index, we also made DRIS classification indices. The ranges of suitable DRIS indices for N, P, K, Ca and Mg were -5. 864- 6.009, -6.742-5.210, -5.656-6.894, -3.381-4.209, -5.869-5.190, respectively.关键词
杏；叶片；营养诊断；DRIS法Key words
Armeniaca vulgaris/leaf/ nutrient diagnosis/ DRIS分类
农业科技引用本文复制引用
刘雪凤,李凯荣,时亚坤,李苗,杨晓毅..陕西富平杏叶片营养诊断研究[J].西北林学院学报,2011,26(5):127-130,169,5.基金项目
国家科技支撑计划项目(2006BAD03 A0205). （2006BAD03 A0205）
