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林木结实受到多方面环境因子的综合影响,如地形地势,坡度坡向,气象因子等。而风对林木花粉的传播影响较大,从而间接地影响了林木的结实。为此,笔者对风影响樟子松结实的情况做了观察,现报告如下: 一、观察地的基本情况观察工作是在我场种子林工区(前付家),13年生樟子松种子林中进行的。该林平均树高6.5米,平均胸径13厘米,保留行距3米,株距6米,密度为37株/亩,平均冠幅
Forest trees are affected by the comprehensive effects of various environmental factors, such as terrain, slope, meteorological factors. However, the impact of wind on the spread of forest pollen has a greater impact, which indirectly affected the firmness of forest trees. To this end, the author of the wind affected Pinus sylvestris did a solid situation, are as follows: First, the basic observation of the observation The work is in my field seed forest area (formerly pay home), 13-year-old Pinus sylvestris var. In the The average height of the forest 6.5 meters, average diameter at breast height 13 cm, spacing 3 meters, spacing 6 meters, the density of 37 plants / mu, the average crown