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对苜蓿不同年份产量与总产量的相关及通径分析表明,第2、第3、第4年的产量和总产量均呈极显著正相关,第1年的产量与总产量为负相关,但不显著。各年份的产量对总产量均有正的直接作用,其中以第4年作用最大。
The correlation and path analysis of yield and total yield of alfalfa in different years showed that there was a significant positive correlation between yield and total yield in the second, third and fourth years. The yield in the first year was negatively correlated with the total yield Not obvious. The output of each year has a positive and direct effect on the total output, of which the fourth year has the greatest effect.