| 外源铜对土壤果树系统中酶活性影响的研究 |
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| 引用本文： | 刘春生,常红岩,孙百晔,孙玉焕,叶优良,张福锁. 外源铜对土壤果树系统中酶活性影响的研究[J]. 土壤学报, 2002, 39(1): 37-44 |
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| 作者姓名： | 刘春生 常红岩 孙百晔 孙玉焕 叶优良 张福锁 |
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| 作者单位： | 1. 山东农业大学资环学院,泰安,271018
2. 中国农业大学资环学院,北京,100009 |
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| 基金项目： | 山东省自然科学基金资助(批准号Y98D18066)项目 |
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| 摘 要： | 利用褐土和红富士苹果嫁接苗为供试材料 ,研究外源铜对土壤—苹果树系统中酶活性的影响。结果表明 ,低量的外源铜能使果树叶片的过氧化氢酶、多酚氧化酶、抗坏血酸氧化酶及根系过氧化氢酶的活性加强 ,而高量铜使活性大幅度降低 ,加入钙铁后在一定程度上使抑制缓解。土壤过氧化氢酶的活性与外源铜量具显着的曲线相关性 ,(y =x ( - 1 1 .2 6 0 .75x) ,r=0 .995 5 ) ,蔗糖酶活性与土壤施铜量呈Logistic函数关系 (y =2 .95 ( 1 0 .5 7exp( - 5 .0 2× 1 0 - 5x) ,r=- 0 .982 0 )。脲酶对铜过量非常敏感 ,大于 1 0 0mgkg- 1的各处理均未测出其活性
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| 关 键 词： | 外源铜 土壤 苹果树 酶活性 |
| 收稿时间： | 2000-12-31 |
| 修稿时间： | 2000-12-31 |
EFFECTS OF EXTERNAL COPPER ON ENZYME ACTIVITY IN SOIL AND APPLE TREE SYSTEM |
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| Liu Chun-sheng,Chang Hong-yan,Sun Bai-ye,Sun Yu-huan,Ye You-liang and Zhang Fu-suo. EFFECTS OF EXTERNAL COPPER ON ENZYME ACTIVITY IN SOIL AND APPLE TREE SYSTEM[J]. Acta Pedologica Sinica, 2002, 39(1): 37-44 |
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| Authors: | Liu Chun-sheng Chang Hong-yan Sun Bai-ye Sun Yu-huan Ye You-liang Zhang Fu-suo |
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| Affiliation: | Resources and Environment College, Shandong Agricultural University, Tai'an 271018;Resources and Environment College, Shandong Agricultural University, Tai'an 271018;Resources and Environment College, Shandong Agricultural University, Tai'an 271018;Resources and Environment College, Shandong Agricultural University, Tai'an 271018;Resources and Environment College, Shandong Agricultural University, Tai'an 271018;Resources and Environment College, China Agricultural University, Beijing 100009 |
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| Abstract: | Effect of external copper on enzyme activity in a soil and apple tree system was studied by us-ing cinnamon soil and Fuji apple young tree.The results showed that perioxidase,PPO and ascorbic acid oxidase act ivity in the leaves and perioxidase activity in the roots were reinforced at low external copper levels and reduced at high.Adding Ca of Fe at high copper levels could mitigate copper toxicity in some degree.A significant curuilinear correlation was observed between soil peri-oxidase activity and the external copper concentration(y=x/(-11.26+0.75x),r=0.9955**).Soil sucrase activity was logistically correlated with the external copper level(y=2.95/(1+0.57exp(-5.02×10-5x)),r=-0.9820**).Urease was very sensitive to copper and it lost activity at levels> Cu100. |
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| Keywords: | Excessive copper Soil Apple trees Enzyme activity |
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