Risk analysis of new maize technology in Zaire: a portfolio approach
使用二次规划模型评估扎伊尔卡赛东方地区传统农民采用新玉米技术的风险，发现包含新技术的种植系统比本地品种更高效，而强制棉花生产在现有价格和产量下效率不高。
Abstract Risk associated with the adoption of new maize technology and the impact of mandatory cotton production on traditional farmers in the Kasai Oriental Region of Zaire are evaluated within a portfolio context using a quadratic programming model. Seasonal net returns for farm plans including four levels of maize technology in combination with staple food crops are evaluated, with and without mandatory cotton production. The results indicate that cropping systems that include new maize technology are risk‐efficient relative to local maize varieties while mandatory cotton production is not risk‐efficient at the prevalent price and yield levels in the farming system.