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四、1.连生节的直径与其所在树干高度有关,但表现为两种趋向。B 组的相关方程式为y=-4.805+1.281x-0.04x~2,相关指数等于0.809:C 组的相关方程式为y=10.6-0.494x+0.095x~2,相关指数等于0.9:2.除 C 组以外,死节的直径与其所在树干高度有关。A 组的相关方程式为 y=0.947+0.148x-0.008x~2,相关指数等于0.736:B 组的相关方程式为 y=0.989+0.2x-0.01x~2,相关指数等于0.832;3.每米长树干上连生节的数量与其所在树干高度有关。A、B、C 3组的相关方程式顺序为:y=-4.029+1.084x-0.02x~2,y=0.084+0.126x+0.031x~2,y=-6.835+1.056x-0.018x~2,相关指数顺序等于0.944、0.967、0.896;4.每米长树干上死节的数量与其所在树干高度有关。A、B、C 3组的相关方程式顺序为:y=-3.498+3.162x-0.208x~2,y=4.319+0.548x-0.024x~2,y=-0.587+0.845x-0.032x~2,相关指数顺序等于0.79,0.505.0.685;5.统计结果得知自零相关的机率均小于0.01,故上述自然现象间的关系确实显著; 6.节距的规律尚待进一步研究,此次所得节距的变异范围,一般为2—30厘米,占总频数的85.8%; 7.要深入了解树节的生长规律,须进行枝条分布及天然整枝的研究。
IV. 1. The diameter of the joint is related to the height of the trunk where it is, but it shows two trends. The correlation equation of group B is y = -4.805 + 1.281x-0.04x ~ 2, the correlation index is equal to 0.809: the correlation equation of group C is y = 10.6-0.494x + 0.095x ~ 2, and the correlation index is equal to 0.9: 2. Outside of Group C, the diameter of the dead section is related to the height of the trunk where it is located. The correlation equation of group A is y = 0.947 + 0.148x-0.008x ~ 2, the correlation index is equal to 0.736: The correlation equation of group B is y = 0.989 + 0.2x-0.01x ~ 2, the correlation index is equal to 0.832; The number of long stems, even the height of the trunk where they are. The order of the correlation equations for groups A, B and C is: y = -4.029 + 1.084x-0.02x ~ 2, y = 0.084 + 0.126x + 0.031x ~ 2, y = -6.835 + 1.056x ~ 0.018x ~ 2 , The relevant index order is equal to 0.944, 0.967, 0.896; 4. The number of upper dead knots per meter is related to the height of the trunk. The order of the correlation equations for groups A, B and C 3 is: y = -3.498 + 3.162x-0.208x ~ 2, y = 4.319 + 0.548x-0.024x ~ 2, y = -0.587 + 0.845x-0.032x ~ 2 , The relevant index order is equal to 0.79,0.505.0.685; 5. The statistical results show that the probability of zero correlation is less than 0.01, so the relationship between the natural phenomenon is indeed significant; 6. The law of pitch needs further study, Pitch variation range, usually 2-30 cm, accounting for 85.8% of the total frequency; 7. To in-depth understanding of the law of growth of tree nodes, the branch must be distributed and natural pruning research.