内薯3号马铃薯综合农艺措施产量函数模型分析

本试验应用二次回归正交旋转设计试验方法,研究了马铃薯主要栽培措施(水分、氮肥、磷肥和种植密度)与产量的关系,建立了数学模型,得出了各因素与产量的主次关系和双因素搭配的产量效应,根据模型求极值找到了亩产3205.5公斤的最佳农艺措施(灌溉水120～150mm,尿素19.8公斤/亩,三料磷6.4公斤/亩,密度3352.3株/亩)。为总结马铃薯栽培经验与指导生产提供了新的方法。

ANALySIS OF THE FUNCTION MODEL FOR THE INTEGRATED AGRICULTURAL MEASURES AND YIEΓD OF VARIETY INNER MONGOLIA NO.3 POTATOES

The design of quadratic orthogonal rotation regression was used in thetest to study relationship between the yield of potatoes and the main culturalpractices such as water,nitrogen fertilizer,phosphatic fertilizer and plant-ing density.A mathematical model was established that gave out the mainand secondary factors affecting the yield,and the yield response of doublefactors。According to the extreme value of the model,the best agronomicpractice for the yield of about 3205.5 kg/mu was as follows:irrigation norm120～150mm,carbamide 19.8 kg/mu,threefold calcium superphosphate 6.4kg/mu,and planting density 3352.3 plants/mu.It provides a new methodof summarizing the experience in cultivating potatoes and of guiding theproduction of potatoes.