RELATIONSHIP OF THE RATIO OF CHLOROPHYLL-A TO CHLOROPHYLL-B AND DOUGLAS-FIR SEEDLING NUTRIENT STATUS

被引：5

作者：

BRACHER, GA

MURTHA, PA

机构：

来源：

CANADIAN JOURNAL OF FOREST RESEARCH | 1993年 / 23卷 / 08期

关键词：

D O I：

10.1139/x93-206

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

One-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were treated with 24 nutrient solutions containing nitrogen, phosphorus, and sulphur levels ranging from 1 to 400 mg/L. After one growing season, newly matured needles were harvested, and foliar samples analyzed for nutrient and chlorophyll concentrations. Several nutrient deficiencies were diagnosed. A consistent and statistically significant relationship between the ratio of chlorophyll a to b and the severity of nutrient deficiency was not found; consequently, it appears ineffectual as an index of nutrient stress.

引用

页码：1655 / 1662

页数：8

共 30 条

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