东北羊草草原主要植物热值

 对羊草(Aneurolepidium chinense)草原55种植物热值进行分析，高热值植物占总数的20％，中热值植物占58.18％，低热值植物占21.82％，55种植物全株平均热值为17949.45J·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。务器官的平均热值花19399.28J·g-1>茎18022.58J·g-1>叶17885.17J·g-1>根17206.05J·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，但豆科植物根的热值明显高于禾本科和菊科根的热值。

CALORIC VALUE OF NORTHEAST ANEUROLEPIDIUM CHINENSE GRASSLAND SPECIES

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.