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牡竹 Dendrocalamus Strictus Nees 是耐干旱贫瘠、耐盐碱、抗逆性强的优良竹种,可作纸浆、家具等用途。可在我国热带、南亚热带的干旱、半干旱地区引种栽培。1986年春播种后,经精心培育,成苗160株(丛),生长良好。180天苗平均高144厘米,底径7毫米。各因子间的关系分析如下:①出苗期天数、积温与出苗量成正相关,r=0.975,回归方程:(?)=-1225.5415-751.8117·logx_1+888.4231·logx_2。②原本和各分蘖单株的高生长天数与高生长量的r 值在0.956～0.990之间。③分蘖次数与高度:r=0.995,(?)=18.6420·e~(0.4247·x)。但是它们的高生长完成天数与高度则成负相关。r=-0.993,(?)=397.0725·e~(-0.0360·x)④分蘖次数与底径:r=0.984,(?)=0.6162·e~(0.6216·x)。⑤底径与高度;r=0.990,(?)=11.7861+17.7345·x。⑥分蘖次数与秆柄前端直径:r=0.962,(?)=-11.7714+42.3671·log x。⑦分蘖次数与根总长:r=0.957,(?)=3.4314+191.5384·log x。根的总长与秆高相近。r=0.994,(?)=24.2922·e~(0.0121·x)。文中众多的回归方程,揭示了牡竹实生幼苗的生长规律,在育苗条件相似的情况下,可用以预测预报牡竹幼苗的生长趋势,具有指导生产的实际意义。
Dendrocalamus Strictus Nees is a fine bamboo species tolerant to drought, barren, saline-alkali and strong resistance. It can be used for pulp, furniture and other purposes. It can be introduced and cultivated in the arid and semi-arid areas of tropical and subtropical China. After planting in the spring of 1986, it was carefully nurtured to grow 160 plants (plexus) and grow well. 180 days average height of 144 cm, bottom diameter 7 mm. The relationship between the factors is as follows: ① the number of days of emergence, accumulated temperature and the emergence of a positive correlation, r = 0.975, regression equation: (?) = - 1225.5415-751.8117 · logx_1 +888.4231 · logx_2. ② The original and high tillering days of the number of high growth and growth of the r value between 0.956 ~ 0.990. ③ tiller number and height: r = 0.995, (?) = 18.6420 · e ~ (0.4247 · x). However, their days of high growth and height were negatively correlated. r = -0.993, (?) = 397.0725 · e ~ (-0.0360 · x) ④ The tiller number and bottom diameter: r = 0.984, (?) = 0.6162 · e ~ (0.6216 · x). ⑤ bottom diameter and height; r = 0.990, (?) = 11.7861 +17.7345 · x. ⑥ The number of tillers and the diameter of the front of the stem: r = 0.962, (?) = - 11.7714 +42.3671 · log x. ⑦ The number of tillers and root length: r = 0.957, (?) = 3.4314 + 191.5384 · log x. The total length of the root and stalk are similar. r = 0.994, (?) = 24.2922 · e ~ (0.0121 · x). Many regression equations in this paper reveal the growth rules of seedlings of seedlings of M. mongolica. Under similar conditions of seedling raising, they can be used to predict and forecast the growth trend of seedlings of seedlings of bamboo trees and have the practical significance of guiding the production.