硫细菌对黄绵土养分活化作用的研究

Thiobacteria on Nutrient Activation of Huangmian Soil

分析了氧化硫硫杆菌的产酸力及其对黄绵土中Ｐ、Ｚｎ、Ｍｎ养分的活化作用。结果表明，氧化硫硫杆菌可使环境ｐＨ值降低１～３个单位；接种于黄绵土后可显著增加土壤中Ｃａ２－Ｐ、Ｃａ８－Ｐ、Ａｌ－Ｐ的含量，土壤中有效Ｚｎ、Ｍｎ含量也明显提高。ｔ检验均达显著或极显著水平；田间试验表现显著的增产效果。

Acid producing power of Thiobacillus thiooxdaus and its activation to nutrient such as P, Zn, Mn in Huangmian soil were studied The results obtained were: The pH value in environment was decreased 1～3 unit by Thiobacillus thiooxdaus; The contents of Ca 2-P, Ca 8-P and Al-P as well as available Zn and Mn were raised significantly though inoculating to Huangmian soil; and field trial displays a good effect From the conclusion above, soil nutrient activation of Thiobacillus thiooxdaus is one of the important biological ways