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作者在福建洋口林场对11个杉木产地试验的实际例子进行了研究,试图说明随机区组少株小区中最优株在统计分析上的应用。研究结果如下: (1)四年来,我们应用小区中的最优株和小区平均数作为统计单元,其所求得的11个杉木产地的秩次基本上是相同的,其秩次相关系数是:0.9807(76年),0.9913(77年),0.9909(78年),0.9947(79年)。以上的相关系数均达到0.01的显著平准。 (2)四年来,各小区中最优株生长量的位次变异很小,这种变异只局限于第1与第2位往返变化,从未发生优株由第]位变为第3位或第4位。 (3)用两种统计单元,所求得的11个杉木产地间的期望均方值是逐年接近的。 (4)通过调整,用最优株作为统计单元所求得的11个杉木产地的遗传力和遗传增益,同样可以对试验结果作出切合实际的正确结论。
The author studied the practical examples of the experiment of producing 11 Chinese fir in Yangguo Forest Farm in Fujian Province, attempting to illustrate the application of the optimal strain in the randomized small-plot plot for statistical analysis. The results are as follows: (1) In the past four years, we applied the average of the optimal strains and plots in a community as a statistical unit, and the rank of 11 fir origin obtained from them was basically the same. The rank correlation coefficient was : 9807 (76 years), 0.9913 (77 years), 0. 9909 years (78 years), 0. 9947 years (79 years). The above correlation coefficient reached 0.01 significant level. (2) In the past four years, the variation in the order of the optimal amount of growth in each plot was very small. This variation was limited to the reciprocal changes between the first and the second loci, and the mutation from the first to the third was never observed Or 4th place. (3) With the two kinds of statistical units, the expected mean square values among the 11 fir origin obtained by the two kinds of year are approaching year by year. (4) By adjusting the heritability and genetic gain of eleven Chinese fir sources obtained from the best strain as a statistical unit, the correct conclusion of the test results can also be made.