| 苏云金素在水中和植株上的衰减与残留 |
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| 引用本文： | 林开春,操继跃.苏云金素在水中和植株上的衰减与残留[J].中国生物防治,1995,11(3):97-100. |
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| 作者姓名： | 林开春 操继跃 |
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| 作者单位： | 华中农业大学!湖北武汉，430070，华中农业大学!湖北武汉，430070，华中农业大学!湖北武汉，430070，华中农业大学!湖北武汉，430070，华中农业大学!湖北武汉，430070，华中农业大学!湖北武汉，430070 |
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| 基金项目： | 国家自然科学基金!39070027 |
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| 摘 要： | 用ＨＰＬＣ检测了苏云金素在鱼塘水和清水中的衰减速率。清水中该物质的半衰期长达４３３小时；在鱼塘水中苏云素的衰减呈双指数消除模型，开始消除半衰期为２．４３－１０．６８小时，终末消除半衰期为１２８．５７－１４２．０１小时。
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| 关 键 词： | 苏云金素 苏云金芽孢杆菌 半衰期 残留 水 植株 |
RATE OF DEGRADATION OF THURINGIENSIN IN PLANT AND WATER |
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| LIN Kai-chun, CAO Ji-yue, LIANG Yun-xiang, YANG Er-ning, LIU Xiang, CHEN Ya-hua.RATE OF DEGRADATION OF THURINGIENSIN IN PLANT AND WATER[J].Chinese Journal of Biological Control,1995,11(3):97-100. |
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| Authors: | LIN Kai-chun CAO Ji-yue LIANG Yun-xiang YANG Er-ning LIU Xiang CHEN Ya-hua |
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| Abstract: | The concentrations of thuringiensin in pond water, clear water, rice plant and Chinese cabbage (pakchoi ) were measured by high performance liquid chromatographic (HPLC) method. The results showed that the rate of degradation of thuringiensin in clear water was slow, with a half life of 433 hours. Degradation parameters of thuringiensin in pond water were calculated by using a double exponential model, with intial stage half life of 2. 43~ 10. 68 hours and terminal stage half life of 128. 57~ 142.01 hours. The elimination model of thuringiensin in rice plant was fitted as one exponential function of C = 73. 21e 0. 0038t, with a half life of 182. 36 hours.The results also showed that there was no residue of thuringiensin in the mature rice plants sprayed with a high dosage of thuringiensin during the tillering stage. The initial stage half life and terminal stage half life of thuringiensin in pakchoi were 59. 74 and 382. 89 hours respectively. There are indications that pakchoi treated with thuringiensin may have some residue when it is served on table. |
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| Keywords: | Bacillus thuringiensis thuringiensin half life residue water plant |
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