摘要： 利用1978年所建立的莱阳长期定位试验田研究不同施肥处理对不同土层土壤酶活性以及年际变化量的影响,经10年研究发现,不同处理土壤酶活性总体顺序为:有机肥(M)>氮磷钾(NPK)>氮磷(NP)>氮肥(N)>氮钾(NK)>空白(CK)。土壤磷酸酶、蔗糖酶、过氧化氢酶活性随着年限的增加而逐年增加,其年际变化量趋势波动前进,与脲酶变化量趋势差异显著。其中土壤蔗糖酶、磷酸酶的年际变化量趋势较相似,均为小幅度波动前进。过氧化氢酶年变化量趋势中则含有明显的"V"型趋势,多有负增长量。脲酶的有机肥(M)处理年际变化量与施用化肥处理差异达极显著水平,不同化肥处理间的变化量却不显著。

关键词: 长期定位施肥, 非石灰性潮土, 土壤酶活性, 年际动态变化

Abstract: Using the Laiyang long-term positioning plots established in 1978,to study the effect of different fertilization treatments on soil enzyme activities and interannual dynamic characteristics. According to 10 years of research,we find that different treatments overall order of soil enzyme activity is M NPK NP N NK CK. With the increase of service life soil phosphatase,invertase and catalase activities increased year by year. Its interannual variation went forward volatility and the difference is significant. The interannual variation of invertase and phosphatase was similar and went forward volatility. The interannual variation of catalase was contented the " V" similar trends and most of them appear negative growth. Otherwise,The difference between urease interannual variability of organic manure and chemical fertilizer volume was highly significant. The different treatments of chemical fertilizer was not significant.

Key words: Long-term fertilization, Non-calcareous alluvial soil, Soil enzyme activity, Interannual dynamics

中图分类号: 

• S154