关键词: 黄白饮, 黄白饮, 抗体水平, 免疫促进作用, 雏鸡

Abstract:

In order to study the impact of long-term fertilization on active carbon of purple soil in wheat season, the relationship between nature of soil and active carbon, based on eight treatments with different fertilization from national purple soil fertility monitored base in Beibei, Chongqing, the author discussed the impact of different fertilization on dissolved organic carbon (DOC) and microbial biomass carbon (MBC) in soil from November, 2008 to May, 2009. The results showed that: the differences of DOC between treatments were not significant. The MBC in soil with PKR- treated was significantly lower than other treatments. The application of N was conducive to the increase of MBC, but variance analysis showed no significant effect. The concentration of MBC followed as R+＞FnR+≥FhR+, NR-＞R-＞FnR- under the same straw amendment, but the differences was not significant. For the concentration of MBC under different straw amendments, R- was 44.4% lower than R+, FnR- was 30.9% lower than FnR+. Correlation analysis showed that temperature, water-filled porosity and pH in soil were significantly related to DOC, while temperature was a negative correlation, WFPS and pH were positive correlations.