County-level maize yield volatility (coefficient of variation) in each state over 2000–2014.Williams Alwyn,Hunter Mitchell C.,Kammerer Melanie,Kane Daniel A.,Jordan Nicholas R.,Mortensen David A.,G. Smith Richard,Snapp Sieglinde,S. Davis AdamPLOS ONE(2016)引用 0|浏览8暂无评分AI 理解论文溯源树样例生成溯源树,研究论文发展脉络Chat Paper正在生成论文摘要