Comparison of foliage caloric values of garden plants in Wuhan and Tianjin,China

Abstract

Abstract: Gross caloric values (GCV),ash contents and ash free caloric values (AFCV) of some garden plants in Spring were measured in Wuhan and Tianjin.Adecrease in average GCVwas observed from the trees to the herbs in Wuhan and Tianjin; values were 20334 J穏^-1 (trees),18226 J穏^-1 (shrubs) and 16656 J穏^-1 (herbs) in Wuhan,and 19531 J穏^-1 (trees),17777 J穏^-1 (shrubs),and 17457 J穏^-1 (herbs) in Tianjin,respectively.On the contrary,ash contents shawed an increace from the trees to the herbs in both cities.Average AFCVshowed the same trend with GCVin Wuhan (the trees>the shrubs>the herbs),but difference in Tianjin, as follow:the trees >the herbs >the shrubs.When caloric values and ash contents were compared between plants in Wuhan and Tianjin,results shnoed that,GCVand AFCVof the plants in Tianjin were lower than results showed that those in Wuhan except for the herbs.Among 7 common plant species in the two cities,GCVand AFCVof five species in Tianjin were lower than those in Wuhan.

Key words: Plant growth regulator, Precursor, Zea mays, Growth, Nutrient uptake

CLC Number:

Q947.5

XU Yongrong, FENG Zongwei, ZHU Jingen. Comparison of foliage caloric values of garden plants in Wuhan and Tianjin,China[J]. cje, 2004, (6): 11-14.

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