Cypermethrin on Soil Enzymatic Activity and Its Degradation in Different Fertilization Soils

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Cypermethrin on Soil Enzymatic Activity and Its Degradation in Different Fertilization Soils

更新时间：2024-11-07

- Cypermethrin on Soil Enzymatic Activity and Its Degradation in Different Fertilization Soils
- Issue 4, Pages: 127-131(2006)
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- Published：2006
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Cypermethrin on Soil Enzymatic Activity and Its Degradation in Different Fertilization Soils[J]. 2006, (4): 127-131.
DOI：

Cypermethrin on Soil Enzymatic Activity and Its Degradation in Different Fertilization Soils[J]. 2006, (4): 127-131. DOI：

摘要

采用长期定位施肥试验土壤（轻壤质黄潮土），研究不同施肥条件下，氯氰菊酯降解变化和对土壤酶活性的影响。结果表明，不同的施肥处理对土壤中氯氰菊酯的降解行为有显著影响，长期施用氮肥，土壤中速效氮含量升高，对氯氰菊酯降解有抑制作用；施用磷肥则促进降解；施用有机肥在提高土壤有机质含量的同时，虽加速了氯氰菊酯降解，但降解延滞期和残留期有所增加。氯氰菊酯在土壤中的降解遵循一级动力学方程，降解半衰期为10．13d（PK）～14．58d（NK）。土壤中加入氯氰菊酯后，脱氢酶、脲酶活性有所升高，施肥处理不同，升高幅度也不一样．均达显著水平。磷酸酶活性变化在不同施肥处理中，表现不一样。培养26d左右，土壤酶活性大多都能恢复到初始水平。研究土壤中农药残留与施肥、土壤酶活性的关系，对于实现农业可持续发展具有重要意义。

Abstract

Using long-term experiment soil(classified as aquic inceptisol)

degradation of cypermethrin in different fertilization soils and effect of cypermethrin on different fertilization soil enzymatic activity were conducted.Study results showed dissipation of pesticide was significantly influenced by fertilization.After long-term application of N fertilizer

soil available N content increased and degradation was inhibited.However application of P fertilizer could facilitate this process.Addition of organic manure into soil

soil organic matter content increased and so did degradation rate

but dissipation time of cypermethrin and lag phase prolonged.Degradation of cypermethrin in soils followed the first-order kinetic equation

and DT50 was from 10.13 days(PK) to 14.58 days(NK).Dehydrogenase and urease activities increased significantly after addition of cypermethrin into soils

and increments of different fertilization treatment varied.Changes of phosphatase activity differed in different treatment soils.Soil enzymatic activity could recover at day 26 of incubation in almost treatment soils.It is of great importance for sustainable agriculture to study the interaction among pesticide residues

fertilization and enzymatic activity in soil.

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ZHAO Jing1,HAN Tian-tian1,XIE Xing-bin1,DONG Yan1,WU Man1,LIANG Ai-xin2,SHEN Xiang1(1.College of Horticulture Science and Engineering,Shandong Agricultural University,State Key Laboratory ofCrop Biology,Taian,Shandong 271018,2.Sinochem Shandong Fertilizer Co.,Ltd.,,)

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