Evaluation on Resource Utilization Potential of Typical Agricultural Waste in Southwest China

• 作者: Fan Chengwu Liu Lingling Qin Song Wanjg Wenhua Yin Rongxiu Zhang Bangxi Zheng Yuanli Zhou Ruirong
• 来源期刊: 气象与环境研究:英文版
• 学科: 地球科学
• 关键词: STRAW MANURE NUTRIENT Temporal-spatial distribution
• 年，卷（期）: 2018,（6）
• 页码范围: 73-78
• 页数: 6页
• 分类号: P

摘要

To impel resource utilization of agricultural waste,four provinces and cities of southwest China were taken as research objects,to analyze yield change of typical agricultural waste in southwest China during 2010-2016,and resource amounts of typical agricultural crops straw and livestock and poultry waste and their nutrient contents in four provinces and cities of southwest China in 2016 were calculated.The results showed that resource amount of typical agricultural waste in southwest China overall showed a continuously increasing trend with the improvement of agricultural comprehensive productivity.Straw resource amount of agricultural crops was dominant by rice and corn,and they accounted for 61.61%of total amount in southwest China.Livestock and poultry manure was dominant by cattle and pig excrement,and they accounted for89.59%of total in southwest China.Seen from distribution region,the resource amount sequence of typical agricultural waste in southwest China was Sichuan>Yun-nan>Guizhou>Chongqing.N,P2O5 and K2O in straw resource of typical agricultural crops in southwest China of 2016 were respectively 76.11×10^4,23.36×10^4 and 125.78×10^4t,and total nutrient amount was 22.53×10^5t.N,P2O5 and K2O of livestock and poultry manure resource were respectively 27.28×10^4,12.87×10^4 and 62.45×10^4 t,and total nutrient amount was 10.26×10^5 t.Therefore,resource amount of agricultural waste in southwest China is rich in a long term,and nutrient storage is huge.Its reasonable recycling is favorable for sustainable development of agriculture in southwest China,and has important actual significance for guaranteeing crop yield and decreasing chemical fertilizer use.