Effect of Different Fertilization Treatments and Different Soil Highths on Soil Enzyme Activities and Interannual Dynamic Characteristics to Long-term Fertilization
Using the Laiyang long-term positioning plots established in 1978,to study the effect of different fer-tilization treatments on soil enzyme activities and interannual dynamic characteristics. According to 10 years of re-search,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 phospha-tase 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.
国家科技期刊平台
NSTL
万方数据
维普
