【摘要】 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/667m²,呼盟;≥200kg/667m²,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 P₂O₅/667m²、3.26～4.39 kg K₂O/667m²、3.66～4.80 kg N/667m²和45.3×10⁴～47.8×10⁴株/667m²;赤峰地区则分别为5.13～5.74 kg P₂O₅/667m²、3.50～4.02 kg K₂O/667m²、7.49～8.86 kg N/667m²和3.06×10⁴～32.2×10⁴株/667m²。更多还原

【Abstract】 In order to gain a high yield under dry farming, two spring wheat varieties were used to build a quadratic multiple regression mathematic model about yield and main agronomic cultivation measures in the experiment with a four factor optimum design, which taking four main agronomic measures, including basic seedling, amount of N, P and K applied as decisive variables, and yield as function. Through optimizing of frequcency, an optimum scheme of agronomic cultivation was brought forward to realize high yield in dry farming sites. The proper ranges of P、K and N applied and basic seedling were 4. 02-4. 70 P2O5 kg/667m2, 3. 26-4. 39 K2O kg/667m2, 3. 66-4. 80 N kg/667m2 and 45. 3×104 -47. 8×104 plants/667m2 in Humeng; 5.13-5. 74 P2O5 kg/667m2, 3. 50-4. 02 K2O kg/667m2, 7. 49-8. 86 N kg/667m2 and 3. 08×104-32. 2× 104 plants/667m2 in Chifeng.更多还原