دانلود گزارش کارورزی و کار آموزی

چکیده : 

Five provinces located in the five main rice-growing regions in China were selected as study areas, which

were Jiangsu, Heilongjiang, Sichuan, Guangdong and Hunan province respectively in the middle and

lower reaches of the Yangtze River, northern, southwest, southern and central rice districts. Carbon footprints

of rice production in these five provinces were calculated through the life cycle assessment method

using governmental statistical data, industrial standards and relevant technical data separately. Material

and energy consumptions were estimated, key stages of energy consumptions and carbon emissions were

identified as well. Moreover, improving measurements had been suggested correspondingly. The results

indicated that: the energy consumptions of rice production in these five provinces ranked as following

(high to low): Guangdong, Heilongjiang, Hunan, Sichuan and Jiangsu. The carbon footprints of rice production

were 2504.20 kg carbon dioxide equation per ton rice (kgCO2-eq./t) (Guangdong province),

2326.47 kgCO2-eq./t (Hunan province), 1889.97 kgCO2-eq./t (Heilongjiang province), 1538.90 kgCO2-

eq./t (Sichuan province) and 1344.92 kgCO2-eq./t (Jiangsu province) respectively. Reducing the quantities

of urea and using the intermittent irrigation method could decrease energy consumption as well as carbon

footprint