| 中国长江中下游地区桑叶-蚕茧系统硫素转化效率 |
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| 作者姓名： | ZHAO Yan-Wen HU Zheng-Yi CAO Zhi-Hong J. D. BEATON A. M. HENDERSON M. X. FAN XU Cheng-Kai |
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| 作者单位： | College of Agriculture, Nanjing Agri. Univ., Key Lab. of Crop Growth Regulation, Ministry of Agri., Nanjing 210095 (China). E-mail:ywzhao@njau.edu.cn;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);Fernz SulFer Works Inc., P.O. Box 9, Irricana, AB. TOM 1B0 (Canada);Fernz SulFer Works Inc., P.O. Box 9, Irricana, AB. TOM 1B0 (Canada);The Sulphur Institute, Washington, DC 20036 (USA);Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China) |
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| 基金项目： | *1Project financially supported by the Postdoctoral Fund of People's Government of Jiangsu Province, China; the Fernz SulFer Works Inc., Irricana, Canada; and The Sulphur Institute, USA (No.2500-0007). |
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| 摘 要： | Cocoon samples were collected from fifty-two mulberry gardens with high, intermediate, and low silkworm cocoon productivities in the lower-middle reaches of the Yangtze River in the six China’s provinces of Jiangsu, Jiangxi, Anhui, Fujian, Hunan, and Hubei to determine the transformation efficiency of S from mulberry leaves to silkworm cocoons, and to evaluate the sulfur cycle (uptake and output) in the mulberry leaf-silkworm cocoon system with typical mulberry gardens in the lower-middle reaches of the Yangtze River in China. The transformation efficiency of sulfur (TES) from mulberry leaves into silkworm cocoons in the high-productivity mulberry gardens was significantly lower (P < 0.05) than that in the low-productivity gardens. For the high-productivity mulberry gardens the TES from mulberry leaves into the cocoon shell was significantly higher (P < 0.05) than that for low-yield mulberry gardens. Producing 1 kg dry cocoon in mulberry gardens required uptake of about 20 g S, however 1 kg of dry cocoon only removed about 4 g S. Therefore, recycling of these organic wastes with silkworm cultivation was important for sulfur balances.
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| 关 键 词： | 硫循环 转换效率 蚕茧 桑叶 扬子江 土壤有机质 |
Transformation Efficiency of sulfur for a mulberry leaf-silkworm cocoon system in the lower-middle reaches of the Yangtze River, China |
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| ZHAO Yan-Wen,HU Zheng-Yi,CAO Zhi-Hong,J. D. BEATON,A. M. HENDERSON,M. X. FAN,XU Cheng-Kai.Transformation Efficiency of sulfur for a mulberry leaf-silkworm cocoon system in the lower-middle reaches of the Yangtze River, China[J].Pedosphere,2005,15(3):281-285. |
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| Authors: | ZHAO Yan-Wen HU Zheng-Yi CAO Zhi-Hong J D BEATON A M HENDERSON M X FAN and XU Cheng-Kai |
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| Institution: | College of Agriculture, Nanjing Agri. Univ., Key Lab. of Crop Growth Regulation, Ministry of Agri., Nanjing 210095 (China). E-mail:ywzhao@njau.edu.cn;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);Fernz SulFer Works Inc., P.O. Box 9, Irricana, AB. TOM 1B0 (Canada);Fernz SulFer Works Inc., P.O. Box 9, Irricana, AB. TOM 1B0 (Canada);The Sulphur Institute, Washington, DC 20036 (USA);Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China) |
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| Abstract: | Cocoon samples were collected from fifty-two mulberry gardens with high, intermediate, and low silkworm cocoon productivities in the lower-middle reaches of the Yangtze River in the six China's provinces of Jiangsu, Jiangxi, Anhui, Fujian, Hunan, and Hubei to determine the transformation efficiency of S from mulberry leaves to silkworm cocoons, and to evaluate the sulfur cycle (uptake and output) in the mulberry leaf-silkworm cocoon system with typical mulberry gardens in the lower-middle reaches of the Yangtze River in China. The transformation efficiency of sulfur (TES) from mulberry leaves into silkworm cocoons in the high-productivity mulberry gardens was significantly lower (P < 0.05) than that in the low-productivity gardens. For the high-productivity mulberry gardens the TES from mulberry leaves into the cocoon shells was significantly higher (P < 0.05) than that for low-yield mulberry gardens. Producing 1 kg dry cocoon in mulberry gardens required uptake of about 20 g S, however 1 kg of dry cocoon only removed about 4 g S. Therefore, recycling of these organic wastes with silkworm cultivation was important for sulfur balances. |
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| Keywords: | mulberry leaves silkworm cocoon sulfur transformation efficiency |
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