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[目的]分析干旱区绿洲玉米水分生产率的影响因素。[方法]以黑河中游张掖市临泽县的绿洲灌区为例,根据绿洲灌区主要农作物玉米生长发育期的实际情况,选取了9个影响因素进行灰色关联分析。[结果]灰色关联度大小排序结果显示,1995~2009年影响玉米水分生产率的前5位主要因素依次是化肥施用量>劳动力投入>生产用种子>地膜使用量>农药施用量。说明干旱区绿洲玉米水分生产率受可控因素的影响明显大于不可控因素。[结论]在水资源限制的前提下,未来合理高效配置农业生产中可控因素的投入,应是干旱区绿洲玉米水分生产率提高的主要对策。
[Objective] The research aimed to analyze the influencing factors of corn water productivity in oasis arid area. [Method] Taking the oasis irrigated area of Linze County in Zhangye City of middle reaches of Heihe River as an example, nine influential factors were selected for gray correlation analysis according to the actual situation of maize growth and development during the main crops in oasis irrigation area. [Result] The results of ranking of gray correlation degree showed that the top five factors affecting the water productivity of maize from 1995 to 2009 were the rate of fertilizer application> labor input> production seed> plastic film usage> pesticide application. This shows that the productivity of maize in arid oasis is more affected by the controllable factors than the uncontrollable factors. [Conclusion] Under the premise of water resources limitation, the reasonable and efficient allocation of controllable factors in agricultural production in the future should be the main countermeasures to improve the water productivity of maize in arid areas.