内蒙古西部平原灌区春小麦综合栽培措施与产量关系模型的研究

通过多年多点的五因素二次通用旋转组合设计试验，以对春小麦生育影响较大的基本苗数、施磷量、施钾量、种氮肥量、追氮肥量五项主要因素为决策变量，以产量为目标函数，建立了内蒙古小麦主产区主要农艺栽培措施与产量关乐的二次多项式回归数学模型，通过频数寻优，定量化提出了灌区春小麦实现高产的综合农艺栽培措施优化组合方案．密度、氮、磷、钾肥施用量对产量影响均呈单峰曲线变化，其中以种氮肥、施钾量影响较大；氮、磷、钾肥花用量较少时，密度与氮、磷、钾肥施用量的交互作用为正效应，反之，则为负效应。

Study on Relation Model between Agricultural Cultivation Measures and Yield of Spring Wheat in Western PlainIrrigating Area of Inner Mongolia

By the experiment, a five-factor conic regressive mathematics model was set up to describe the relation between main agricultural cultivation measures and yield in the main wheat product area of Inner Mongolia. Its goal function was yield and the decisive variables were number of seedlings, amount of P, K applied, and basis N, top dressing N, which greatly affected spring wheat development. According to the experiment result and optimum frequency selection several years and places, an optimum cross scheme of synthesis agricultural cultivation measures was put forward to realize wheat's high-yield in irrigation. The effect of amount of N, P and K applied on yield changed as a curve of single-peak, and the effect of basis N and K applied were bigger than that of the other factors. At the low level of fertilizer, the interactions between density and amount of N, P and K applied was positive reaction, on the contrary, it was negative at the high level.