Change of nutrients in rubber plantations in Xishuangbanna
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TextPublication details: Proceedings of IRRDB Conference: NR Industry: Responding to Globalization, 7-8 September 2004, Kunming International Convention & Exhibition Center, China. pp.176-182.Subject(s): Summary: The results of investigation and analysis on the soil and leaves show that the content of soil nutrients drop markedly in rubber plantation in Xishuangbanna. The soil organic matter, total nitrogen, available phosphors and available potassium descend 0.25-1.25 percentage points, 0.023-0.033 percentage points, 1.3 X 10 -6 - 4.2 X 10 -6 and 30 X 10 -6 - 69 X 10 -6, respectively. The value of pH raises 0.1 - 0.7. The contents of Mg, K and N descend 0.10 - 0.20 percentage points. The nutrient level was higher in 1987 than in 1977 because nutrient guiding fertilization at Jinghong Farm, Dongfeng Farm and Mengpeng Farm.
| Item type | Current library | Status | |
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Journals
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RRII Library Soils and agonomy | Journals |
The results of investigation and analysis on the soil and leaves show that the content of soil nutrients drop markedly in rubber plantation in Xishuangbanna. The soil organic matter, total nitrogen, available phosphors and available potassium descend 0.25-1.25 percentage points, 0.023-0.033 percentage points, 1.3 X 10 -6 - 4.2 X 10 -6 and 30 X 10 -6 - 69 X 10 -6, respectively. The value of pH raises 0.1 - 0.7. The contents of Mg, K and N descend 0.10 - 0.20 percentage points. The nutrient level was higher in 1987 than in 1977 because nutrient guiding fertilization at Jinghong Farm, Dongfeng Farm and Mengpeng Farm.
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