论文部分内容阅读
本文系统地研究了马尾松人工林营养元素的分配格局。结果表明马尾松不同器官营养元素含量是叶>枝皮>干皮>枝木>干木;同化器官——针叶中营养元素含量规律为N>K>Ca>Mg>P,非同化器官为Ca>N>K>Mg>P;不同器官营养元素的贮量为干木>干皮>叶>枝木>枝皮,同化器官对不同营养元素的贮量呈N>K>Ca>Mg>P,非同化器官为Ca>N>K>Mg>P;不同立地条件下,马尾松林生产1t干物质所贮存的营养元素不同,立地条件愈好,营养元素效率愈高,贮存愈少;母岩、土层厚度和养分总量是影响马尾松林地上各器官,特别是针叶营养元素含量的重要因子,土壤N、P含量越高,马尾松人工林生物量越大。
This paper systematically studied the Pinus massoniana plantation nutrient distribution pattern. The results showed that the content of nutrient elements in different organs of Pinus massoniana was leaf> branch bark> dry bark> branch bark> dry wood. The content of nutrient elements in assimilate organ-needles was N> K> Ca> Mg> Ca> N> K> Mg> P. The storage amount of nutrient elements in different organs was dry wood> dry skins> leaves> branches> P and non-assimilation organs were Ca> N> K> Mg> P; under different site conditions, the biomass stored in 1t dry matter produced by Pinus massoniana was different, the better the site condition was, the higher nutrient efficiency was, The thickness of rock, the thickness of soil layer and the total amount of nutrients are important factors affecting the content of nutrient elements in the organs of Pinus massoniana plantation, especially conifers. The higher the content of N and P in soil is, the larger the mass of Pinus massoniana plantation is.