论文部分内容阅读
通过对3种常绿树种(雪松、樟子松和油松)针叶的热值和灰分进行测定,探讨了植物热值和灰分的月变化及二者之间相关性,以期进一步丰富园林植物热值研究内容,同时为园林植物能用过程中合理利用提供参考。结果表明:3种树木针叶干重热值、去灰分热值和灰分含量均为多峰值变化曲线,且变化趋势基本一致;雪松的干重热值和去灰分热值最大值均出现在4月份,樟子松的干重热值和去灰分热值最大值均出现在12月份,油松的干重热值和去灰分热值最大值分别出现在12月份和4月份;樟子松针叶干重热值与灰分含量之间表现为极显著线性负相关(P<0.01),油松针叶干重热值与灰分之间表现为显著线性负相关(P<0.05),雪松干重热值与灰分含量之间表现为负相关关系但相关性不显著。
The caloric values and ash contents of needles of three evergreen species (cedar, Pinus sylvestris var. Mongolica and Pinus tabulaeformis) were determined to investigate the monthly changes of caloric value and ash of the plants and the correlation between the two, with a view to further enriching plant species Calorific value of the study, at the same time for the garden plant can use the process of rational use of reference. The results showed that the dry weight, caloric value and ash content of three kinds of tree needles were multi-peak curve, and the trend was basically the same. The dry weight calorific value and maximum value of ash removal calorific value of cedar appeared in 4 In December, the dry weight and ash-removing calorific value of Pinus sylvestris var. Mongolica appeared in December. The dry weight and calorific value of Pinus tabulaeformis appeared in December and April, respectively. The Pinus sylvestris var. There was a significant linear negative correlation between the calorific value of dry weight and ash content (P <0.01), the linear regression of dry weight of softwood needles and ash (P <0.05) And ash content showed a negative correlation between the correlation but not significant.