度尾文旦柚叶片矿质元素含量的适宜值

王贤达,范国成,李健

Optimum Content of Mineral Elements in the Leaves of Duweiwendan Pomelo (Citrus grandis (L.) Osbeck. cv. Duweiwendan)

WANG XianDa,FAN GuoCheng,LI Jian

表4 度尾文旦柚叶片矿质营养诊断临界标准与主要元素平衡指数的诊断参数

Table 4 Diagnostic criteria of mineral nutrition and Diagnostic parameters of major element BDRIS in Duweiwendan pomelo leaves

元素 Element 临界标准[16] Critical standard BDRIS诊断参数 Diagnostic parameter (n=102) 缺乏 Lack 适宜 Suitable 过量 Over r N P K Ca Mg N (%) 2.29 2.41 — 2.87 2.99 N 1.0000 0.0293 0.0917 -0.1204 -0.0331 P (%) 0.09 0.10 — 0.14 0.15 P 0.0293 1.0000 0.4483 -0.0635 -0.0547 K (%) 1.17 1.39 — 2.24 2.46 K 0.0917 0.4483 1.0000 -0.6005 -0.2465 Ca (%) 1.74 2.26 — 4.21 4.72 Ca -0.1204 -0.0635 -0.6005 1.0000 0.0223 Mg (%) 0.20 0.24 — 0.41 0.46 Mg -0.0331 -0.0547 -0.2465 0.0223 1.0000 相对标准 Relative standard -1.96 -1.28 — 1.28 1.96 平均值Mean 2.651 0.1218 1.854 3.232 0.3259 Cu (mg·kg-1) 4 6 — 25 35 标准差Std 0.1782 0.0150 0.3297 0.7612 0.0665 Zn (mg·kg-1) - 24* — 40 - 正态检验 P (Normal) 0.9088 0.7427 0.2841 0.1831 0.1275 Fe (mg·kg-1) 60* — 140* Mn (mg·kg-1) 25* — 140* B (mg·kg-1) 15 30 — 65 150 Mo (mg·kg-1) 0.05 0.1* — 1.0* - S (%) 0.2* — 0.4*