Exploitation and utilization of straw resource in the half aridness area of the northern part of liaoxi 辽西北部半干旱地区秸秆资源的开发与利用
2.
However , for a long time agricultural natural resources have been unreasonably used and excessively exploited so that pylr has frequent disasters of flood and aridness and people there have a poor life 但是长期以来由于农业自然资源的不合理利用和过度开发，致使该区域生态恶化，灾害频繁，人民生活困苦。
