低山丘陵半干旱区春小麦田水肥耦合作用的初步研究

Initial study on interaction of water and fertilizer coupling of spring wheat in the hilly land of semiarid region

在旱棚控制条件下 ,采用 31 2 - D最优饱和设计方案 ,对辽西半干旱区春小麦田水肥耦合作用进行了初步研究。在建立了水肥耦合数学模型基础上 ,分析了各因子的主因素和单因素效应、两因素和三因素间交互耦合效应以及多因子间的耦合和限制作用类型 ,并提出了以水调肥矫正模型 ,为该区水肥耦合作用的充分发挥和互馈作用的人工调控提供了理论依据。

To study the interaction of water and fertilizer coupling, a 312 D optimum design was carried out under waterproof shed in the semiarid region of western Liaoning Province. On the basis of water and fertilizer coupling model put forward, the effect involved in main and single factors, interaction coupling and the types of their effect and limitation were andalyzed and studied respectively. The adjusted model for re gulating amount according to water volume supplied for putting into water and fertilizer were put forward, which provided the theoretical basis for promoting water and fertili zer interaction coupling and adjusting the coupling on dryland farming in the region.