Bao Jian-Cai, Yu Ji-Hua, Feng Zhi, Chen Bai-Hong, Lei Cheng, Yang Juan
Ying Yong Sheng Tai Xue Bao. 2014 Jan;25(1):181-7.
Based on agricultural statistical and investigating data on farmers, amount, distribution density and amount per capita of crop straw resources of seven western provinces of China were estimated, the trends of amount dynamics from 1997 to 2011 and distribution and utilization of crop straw resources were analyzed, and the constraints of comprehensive utilizing straw resources and possible ways to improve straw utilization were discussed. Results showed that theoretical amount of crop straw resources in seven western provinces was 8.82 x 10(7) t in 2009, in which straw of cereals accounted for 63.1% of the total, and straw nutrients returned back to fields was 1.20 x 10(6) t, accounting for 50.5% of the total. The distribution density of straw resources of the seven western provinces was less than the national mean, while the amount per capita of straw resources was higher. According to the survey, the straw was mainly used as fuel, feed, industrial materials, matrix and returned field directly, accounting for 33.8%, 29.3%, 5.2%, 1.8% and 13.5% of the total amount, respectively. In addition, the amounts of straw burned and abandoned were 11.1% and 5.3% of the total, respectively.
基于农业统计数据及农户调查资料，估算了中国西部7省农作物秸秆资源量、分布密度及人均占有量，分析了1997—2011年秸秆资源量动态变化趋势、分布及利用情况，并探讨了秸秆资源综合利用的制约因素及提高秸秆利用率的可能途径。结果表明，2009年西部7省农作物秸秆理论资源量为8.82×10⁷t，其中谷物秸秆占总量的63.1%，秸秆还田养分量为1.20×10⁶t，占总量的50.5%。西部7省秸秆资源分布密度低于全国平均水平，而人均秸秆资源量较高。调查显示，秸秆主要用作燃料、饲料、工业原料、基质及直接还田，分别占总量的33.8%、29.3%、5.2%、1.8%和13.5%。此外，秸秆焚烧量和丢弃量分别占总量的11.1%和5.3%。
