东北羊草草原主要植物热值

CALORIC VALUE OF NORTHEAST ANEUROLEPIDIUM CHINENSE GRASSLAND SPECIES

对羊草 (Aneurolepidium chinense)草原 5 5种植物热值进行分析 ,高热值植物占总数的 2 0 % ,中热值植物占 5 8.18% ,低热值植物占 2 1.82 % ,5 5种植物全株平均热值为 17949.45 J·g- 1。因含能物质在各器官的分配不同 ,同一植物不同器官的热值也存在着差异。各器官的平均热值花 193 99.2 8J·g- 1 >茎 180 2 2 .5 8J· g- 1 >叶 17885 .17J· g- 1 >根 172 0 6.0 5 J·g- 1。不同科植物全株和各器官平均热值存在较大差异 ,即使同属植物也存在一定差异。菊科、禾本科和豆科 3大科植物全株平均热值无明显差异 。

Analysis of the caloric value of 55 northeast Aneurolepidium chinense grassland plants shows that 20% of plants had high caloric value,58% had medium value and 22% had low value.The average caloric value of shoots was 17949 45 J·g -1 .The caloric value of plant organs differed within plants as stored energy material was differently distributed among organs. The average caloric value of organs were: flowers 19399 28 J·g -1 ,stem 18022 58 J·g -1 , leaves 17885 17 J·g -1 , roots 17206 05 J·g -1 .The average caloric value of shoots and other organs differed as much between plants in different families as between plants of the same genus. The average caloric value of shoots was not obviously different among the Compositae, Poaceae and Fabaceae, but caloric value of roots of Fabaceae was significantly higher than that of the Compositae and Poaceae.