| Relationships between sulfur concentration in mulberry Leaves and the quality of silkworm cocoon |
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| 作者姓名： | ZHAO Yan-Wen J. D. BEATON CAO Zhi-Hong A. M. HENDERSON HU Zheng-Yi XU Cheng-Kai |
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| 作者单位： | [1]CollegeofResourcesandEnvironmentalSciencesandInstituteofAgiculturalResourcesandEco－environment,NanjingAgriculturalUniversity,Nanjing210095（China） [2]CollegeofResourcesandEnvironmentalSciencesandInstitute,NanjingAgriculturalUniversity,Nanjing210095（China） |
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| 基金项目： | *1Project supported by the National Natural Science Foundation of China(No. 49771051), the Postdoctoral Fund of People's Government of Jiiangsu Province and Fernz Su1Fer Works Inc., Irricana, Alberta, Canada. |
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| 摘 要： | A 40-day gnotobiotic microcosm experiment was carried out to quantify the effect of bacterial-feeding nematode on plat growth and nutrient absorption.The results showed that inoculation of bacterial-feeding nematode Protorhabditis sp.stimulated the growth of wheat (Triticum aestivum) and the uptake of N.By the end of the 40-day incubation wheat biomass and N uptake in the treatment with nematode and bacteria (Pseudomonas sp.)increased by 6.5% and 5.9%,respectively,compared with bacteria alone treatment.The presence of nematode mainly accelerated the growth of aboveground of wheat,while it slightly inhibited the root development.There was little difference in plant tissue N concentration between treatments.P concentration and uptake of wheat,however,were generally reduced by nematode, It appears that the enhancement of plant growth and nitrogen uptake is attributed to the enhancement of nitrogen mineraliztion induced by nematode feeding on bacteria,and the reduction of phosphorous uptake is the result of ewak root status and comptetition by bacteria immobilzation.
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| 关 键 词： | 线虫类 细菌 氮吸收 磷吸收 接种 小麦生长 |
Relationships between sulfur concentration in mulberry Leaves and the quality of silkworm cocoon |
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| ZHAO Yan-Wen,J. D. BEATON,CAO Zhi-Hong,A. M. HENDERSON,HU Zheng-Yi,XU Cheng-Kai.Relationships between sulfur concentration in mulberry Leaves and the quality of silkworm cocoon[J].Pedosphere,2001,11(1):63-66. |
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| Authors: | ZHAO Yan-Wen J D BEATON CAO Zhi-Hong A M HENDERSON HU Zheng-Yi and XU Cheng-Kai |
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| Institution: | Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008 (China);Fernz SulFer Works Inc., P.O. Box 9, Irricana, Alberta T0M 1B0 (Canada);Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008 (China);Fernz SulFer Works Inc., P.O. Box 9, Irricana, Alberta T0M 1B0 (Canada);Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008 (China);Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008 (China) |
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| Abstract: | A 40-day gnotobiotic microcosm experiment was carried out to quantify the effect of bacterial-feeding nematode on plat growth and nutrient absorption.The results showed that inoculation of bacterial-feeding nematode Protorhabditis sp.stimulated the growth of wheat (Triticum aestivum) and the uptake of N.By the end of the 40-day incubation wheat biomass and N uptake in the treatment with nematode and bacteria (Pseudomonas sp.)increased by 6.5% and 5.9%,respectively,compared with bacteria alone treatment.The presence of nematode mainly accelerated the growth of aboveground of wheat,while it slightly inhibited the root development.There was little difference in plant tissue N concentration between treatments.P concentration and uptake of wheat,however,were generally reduced by nematode, It appears that the enhancement of plant growth and nitrogen uptake is attributed to the enhancement of nitrogen mineraliztion induced by nematode feeding on bacteria,and the reduction of phosphorous uptake is the result of ewak root status and comptetition by bacteria immobilzation. |
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| Keywords: | cocoon quality mulberry leaves silkworm cocoon sulfur |
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