Variations of the rate of symbiotic nitrogen fixation (%N<sub>dfa</sub>) with the year of study and P fertilisation each year.
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Information given in brackets indicates the result of the ANOVA in the whole sample (***, P<0,001). Different lowercase letters indicate only marginal differences (P<0.1) between classes performing within-year tests. Variations of the rate of symbiotic nitrogen fixation (%Ndfa) with the year of study and P fertilisation each year.
创建时间：
2015-06-22
