Fertilization regulates soil enzymatic activity and fertility dynamics in a cucumber field

被引:126
作者
Yang, Lijuan [1 ,2 ]
Li, Tianlai [1 ]
Li, Fusheng [3 ]
Lemcoff, J. Hugo [4 ]
Cohen, Shabtai [4 ]
机构
[1] Shenyang Agr Univ, Key Lab Hort Liaoning, Shenyang 110161, Liaoning, Peoples R China
[2] Shenyang Agr Univ, Coll Land Recourses & Environm Sci, Shenyang 110161, Liaoning, Peoples R China
[3] Guangxi Univ, Coll Agr, Nanning 530005, Guangxi, Peoples R China
[4] Agr Res Org, Volcani Ctr, Inst Soil Water & Environm Sci, IL-50250 Bet Dagan, Israel
关键词
cucumber (Cucumis sativus L.); fertilization; soil nutrients; soil enzymes; soil fertility;
D O I
10.1016/j.scienta.2007.11.001
中图分类号
S6 [园艺];
学科分类号
0902 ;
摘要
Different fertilizers may affect soil enzymatic activity and soil fertility dynamics. These effects were investigated in a field experiment with cucumber (Cucumis sativus L.) and the relationship with yield and soil nutrient availability was assessed. Soil enzymatic activity, measured as phosphatase, catalase, invertase and urease activities, decreased in the early growth stages of cucumber, but increased in the late ones, when plant were supplied with partially decomposed horse manure. Chemical N fertilizer inhibited soil enzymatic activity but P and K fertilizers enhanced it. Activity of different soil enzymes was positively correlated with soil NH4+-N and available P concentration, but negatively correlated with leaf N and P concentration. Cucumber yield was also positively correlated with the soil enzymatic activity. Our results demonstrate that soil enzymatic activity acted as a useful indicator of soil fertility dynamics. (c) 2008 Published by Elsevier B.V.
引用
收藏
页码:21 / 26
页数:6
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