【摘要】 本文以１９９１─１９９３年大田试验资料为基础，采用系统动力学方法，通过对影响棉花生育进程诸要素的分析，建立了以日平均气温和日长为驱动变量，露地和地膜覆盖栽培肥水满足条件下的棉花生育期模型。并于１９９４年对模型在播种期的确定、化控的最佳时期选择及棉花肥水管理等方面的应用进行了研究。结果表明，棉花生育期模型具有较高的实用价值，对指导棉花生产管理有重要的指导意义。更多还原

【Abstract】 Based on researches of cotton cultivation and its ecophysiology for three years,a simulation model of cotton growth was established.Daily mean temperature and day-lengts were the variables in the dynamic simulation model of cotton growth.The model simulated and predicted a dynamic process of cotton growth and development under different mean temperatures and day-length conditions while water and fertilizer were available. Auording to the results of the experiment in 1994, the dynamic model was domenstrated that its efficience and accurance are believable.更多还原