内蒙古河套灌区春小麦高产栽培优化农艺措施及数学模型的研究

A Study on the Optimized Agronomical Practice and Mathematical Model for High-yielding Cultivation of Spring Wheat in Hetao Irrigated Area of Inner Mongolia

本文通过三因素二次通用旋转设计试验,对内蒙古河套灌区春小麦高产栽培的主要农艺措施进行优化分析与数学模拟,确定了春小麦高产栽培优化农艺措施为亩播量18～23kg,施N20～23kg,施P_2O_510～13kg。同时还明确了河套灌区春小麦高产栽培的亩产量与氮磷和播量之间的相关关系,即随着目标产量的提高,在增施氮肥和磷肥的基础上,密度呈下降的趋势。

A 3 -factor and 2 -degree common rotary design was used to analyse and simulate the main agronomical practice for high-yielding wheat in Hetao irrigated area of Inner Mongolia, and it was determined that the optimal sowing amount of seeds was 18-23 kg/mu, while N and P2O5 were applied at the rates of 20-23 kg and 10-13 'kg/mu respectively. The correlation among yield, application of N and P and sowing amount was determined for high-yielding spring wheat cultivation. It was found that density tended to decrease with higher target yield while more N and P fertilizers should be applied.