杂交小麦新品种西南112栽培措施的优化

Optimization on Cultivation Measures of Hybrid Wheat Variety Southwest 112

为探明新品种西南112小麦获得高产的种植密度、氮、磷肥施用量及配比,采用二次回归正交旋转组合试验设计,分析种植密度、N、P_2O_5对西南112杂交小麦产量的影响,建立高产数学模型,以制定高产栽培措施。结果表明:不同因素对产量影响依次为施氮量>种植密度>施磷量;获得产量>3 900kg/hm^2的综合技术措施为种植密度203.04~226.41万苗/hm^2,施氮量76.45~96.61kg/hm^2,施磷量50.22~69.78kg/hm^2。

To explore the planting density, nitrogen and phosphorus application amount and ratio for high yielding cultivation of hybrid wheat variety Southwest 112, the quadratic regression orthogonal rotation combination test design was employed to analyze the effects of planting density（x1）, pure N（x2）, P2O5 （x3） on yield of Southwest 112, thus to establish high-yield mathematical model and formulate high- yield cultivation technical measures. Results：The order of their influences on the yield was pure N（x2）〉 planting density（x1）〉P2O5（x3）. To get the yield more than 3 900 kg/hm^2 the comprehensive technical measures were as follows： planting density 2. 030 4 × 10^6-2. 264 1×10^6 plants/hm^2, pure N 76. 45-96.61 kg/hm^2, P2O5 50.22-69.78 kg/hm^2.