控释肥对马铃薯生长及土壤酶活性的影响  

Effects of Controlled-release Fertilizer on Potato Growth and Soil Enzyme Activities

作　　者：刘飞[1] 诸葛玉平[1] 王会[1] 朱利[1] 

机构地区：[1]山东农业大学资源与环境学院,山东泰安271018

出　　处：《水土保持学报》2011年第2期185-188,202,共5页Journal of Soil and Water Conservation

基　　金：国家"十一五"科技支撑计划(2006BAD10B07)

摘　　要：通过马铃薯田间试验,研究了控释肥对马铃薯生长和土壤酶活性的影响。结果表明,与普通肥料相比,控释肥有利于提高马铃薯的株高、茎粗和叶绿素含量,分别提高5.94%,9.04%,5.55%,且控释肥减量20%仍不影响其促进作用。施用控释肥和普通化肥都可以促进土壤酸性磷酸酶和蔗糖酶活性,但控释肥平均比普通肥料的促进作用分别提高10.2%和14.62%,控释肥显著优于普通肥料;控释肥可促进脲酶活性,平均提高15.7%,而普通肥料会对其产生抑制;控释肥处理会对土壤过氧化氢酶活性造成一定的抑制作用,使其活性平均降低11.13%。与其他控释肥处理相比,控释肥减量20%,对脲酶活性的促进作用减小了9.41%,对酸性磷酸酶的促进作用减小了9.02%,对蔗糖酶的促进作用增加了5.56%,对过氧化氢酶的抑制作用降低了5.2%。Field experiment was conducted to study the effects of controlled-release fertilizer on potato growth and soil enzyme activities.The results indicated that：Compared with ordinary fertilizer,the plant height,stem diameter and chlorophyll were significantly increased by the application of controlled-release fertilizer,which respectively increased by 5.94%,9.04% and 5.55%.Furthermore,when the amount of controlled-release fertilizer was reduced by 20%,there was no significant change on the promotion effect.Both of the two fertilizers could improve the activities of phosphatase and sucrase,but the promotion effect of controlled-release fertilizer was significantly better than ordinary fertilizer,respectively increased by 10.2% and 14.62%.The controlled-release fertilizer increased the activity of urease by an average of 15.7%,while the ordinary fertilizer inhibited it.The controlled-release fertilizer could also cause some degree of inhibition on catalase activity which was decreased by an average of 11.13%.Compared with other controlled-release fertilization processing,a reduction to the controlled-release fertilization by 20% could decrease the promotion of the urease activity by 9.41%,and the promotion of the phosphatase activity by 9.02%,increase the promotion of sucrase activity by 5.56%,and decrease the inhibition of catalase activity by 5.2%.

关 键 词：控释肥 马铃薯生长 土壤酶活性 

分 类 号：S154.2[农业科学—土壤学] S532[农业科学—农业基础科学]