论文部分内容阅读
为了给高产栽培提供试验依据,以不同旱作类型的春小麦高产(≥350kg/667m~2,呼盟;≥200kg/667m~2,赤峰)为目标,通过四因素最优组合设计试验,以对春小麦生育影响较大的基本苗数、施磷量、施钾量、施氮量四项主要农艺栽培措施为决策变量,以产量为目标函数,建立了内蒙古不同旱作区春小麦主要农艺栽培措施与产量关系的二次多项式回归数学模型,通过频数寻优,定量化提出了不同旱作地区春小麦实现高产的综合农艺栽培措施优化方案。即施磷量、施钾量、施氮量和基本苗在呼盟地区分别为4.02～4.70 kg P_2O_5/667m~2、3.26～4.39 kg K_2O/667m~2、3.66～4.80 kg N/667m~2和45.3×10~4～47.8×10~4株/667m~2;赤峰地区则分别为5.13～5.74 kg P_2O_5/667m~2、3.50～4.02 kg K_2O/667m~2、7.49～8.86 kg N/667m~2和3.06×10~4～32.2×10~4株/667m~2。
In order to provide experimental basis for high-yielding cultivation, aiming at high-yielding spring wheat (≥350kg / 667m ~ 2, Hohhot; ≥200kg / 667m ~ 2, Chifeng) Four major agronomic cultivation measures, such as basic seedling number, phosphorus application rate, potassium application rate and nitrogen application rate, which had a great influence on the growth of spring wheat were the decision variables and the yield as the objective function. The main agronomic cultivation measures and Quadratic polynomial regression mathematic model of the relationship between yield and yield, optimization and quantification by frequency, the proposed optimization of agronomic cultivation measures to achieve high yield of spring wheat in different dry areas. Namely phosphorus application rate, potassium application rate, nitrogen application rate and basic seedlings were 4.02 ~ 4.70 kg P_2O_5 / 667m ~ 2,3.26 ~ 4.39 kg K_2O / 667m ~ 2,3.66 ~ 4.80 kg N / 667m ~ 2 And 45.3 × 10 ~ 4 ~ 47.8 × 10 ~ 4 plants / 667m ~ 2 respectively, while those in Chifeng area were 5.13 ~ 5.74 kg P_2O_5 / 667m ~ 2,3.50 ~ 4.02 kg K_2O / 667m ~ 2,7.49 ~ 8.86 kg N / 667m ~ 2 and 3.06 × 10 ~ 4 ~ 32.2 × 10 ~ 4 plants / 667m ~ 2.