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江西成林油茶叶片春梢末期营养诊断(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2018年04期
Page:
193-197
Column:
研究简报
publishdate:
2018-07-12

Article Info:/Info

Title:
Study on leaf nutrient of Camellia oleifera in Jiangxi Province
Article ID:
1000-2006(2018)04-0193-05
Author(s):
HU Guozhu12 GAO Wei1* XU Yixin3 GONG Chun1Symbol`@@ NING Boxuan2 XU Linchu1 YANG Funing4
1.Jiangxi Academy of Forestry, Nanchang 330013, China; 2.Jiangxi Forestry Research and Planning Research Institute, Nanchang 330046, China; 3.Nanchang Meteorological Bureau, Nanchang 330046, China; 4.Bureau of Nanchang Forest, Nanchang 330038, China
Keywords:
Keywords:Camellia oleifera germination stage DRIS index method nutrient diagnosis Jiangxi Province
Classification number :
S718
DOI:
10.3969/j.issn.1000-2006.201705003
Document Code:
A
Abstract:
Abstract: 【Objective】 In this study, we measured the microelements of Camellia forest in Jiangxi mountains during the growth period of spring shoots. The concentration of micronutrients in the fertilizer was summarized; the special fertilizer for Camellia oleifera was accordingly produced. 【Method】We used the DRIS index method to analyze nine nutrient elements(N, P, K, Ca, Mg, Cu, Zn, Fe and Mn)in leaves of C. oleifera in 20 counties of the Jiangxi Province.【Result】 The results showed that N, P, Mg and Fe levels were low, while K, Ca, Cu, Zn and Mn levels were adequate. The order of nutrients required for production of tree fertilizer was Fe > P > N > Mg > Mn > Ca > Zn > K > Cu. According to the nutrient concentration in the leaves of the high yield group, the corresponding nutrient diagnostic criteria were established: N, 12.728-17.793 g/kg; P, 0.715-1.045 g/kg; K, 6.950-9.728 g/kg; Ca, 4.876-8.909 g/kg; Mg, 1.270-2.414 g/kg; Cu, 1.219-3.918 mg/kg; Zn, 11.485-16.393 mg/kg; Fe, 0.096-0.221 g/kg; and Mn, 0.707-2.840 g/kg. 【Conclusion】When the element concentration is not in its corresponding range, it is either in excess or absent in the tree. During spring, nitrogen and phosphorus should be applied to C. oleifera. Iron supplementation should also be considered.

References

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Last Update: 2018-07-27