关键词: 水稻, 谷粒重, 发育遗传, 杂种优势, 遗传相关

Abstract: A hotel ecological footprint model was constructed, which could calculate the total and average ecological footprint of hotel’s built-up area, energy, water, food, fabrics, paper products, and wastes, and a hotel eco-efficiency model was also constructed based on ecological footprint assessment. The two models were applied to calculate the ecological footprint and eco-efficiency of five mid/high grade hotels in Qingdao. For each of the hotels, the sum of the ecological footprints of food and energy occupied >94% of the total. The higher the hotel’s grade, the larger the total and average ecological footprint and eco-efficiency were. However, there were significant differences in the ecological footprint and the eco-efficiency among the same grade hotels, suggesting that it still had large space to reduce the ecological footprint and to improve the eco-efficiency through a series of green management measures.

Key words: Rice(Oryza sativa L), Grain weight, Developmental genetics, Heterosis, Genetic relation