初植密度对白桦纤维性状的影响

Effects of Planting density on fiber Characters of Betula platyphylla Suk.

主要研究在不同初植密度下,白桦纤维性状的生长差异。研究结果表明,初植密度3300株/hm^2白桦的纤维长度最长,长宽比最大;不同初植密度白桦纤维长度和长宽比存在极其显著的差异;初植密度与纤维宽度有显著的正相关关系,而初植密度与纤维长度和长宽比的相关关系不显著;初植密度与纤维宽度、纤维长度和长宽比的拟合方程均为二次曲线方程;初植密度3300~4400株/hm^2为白桦纸浆材用材林适宜造林密度。

The growthdifference on fiber characters of Betula platyphylla Suk. were studied in different planting density.The results show that,fiber length was the longest and the ratio of length to width was largest in the density of 3300 plants/ ha,Difference of fiber length and ratio of length and width were extremely significant between different planting density.Planting density and fibre width had significant positive correlation,while planting density and fiber length and ratio of length to width hadn＇t significant correlation. the fitting equation of The planting density and fiber width,fiber length and ratio of length to width of were two times curve equation. The planting density of 3300 ~ 4400 plants / ha was best for pulpwood timber forest.