采种甜菜高产数学模型及优化组合方案探讨

Mathematical Model on High Yield of Sugarbeet Collecting and Approaching on the programme of Best Combinations

本文应用多元回归旋转正交组合设计方法对采种甜菜高产栽培技术中5个主要因素进行了分析,并求得采种甜菜优化农艺措施的产量数学模型。试验结果认为,采种甜菜亩产225kg以上的播期为8月上旬,种植密度为2769～2923株/亩,亩施硫铵51.5～56.0kg,过磷酸钙48.0～54.0kg,氯化钾11.0～12.5kg;5个因素中氮肥对采种甜菜产量影响最大,其次为播期和钾肥;在交互作用中,以磷钾肥作用最明显。

Five main factors of high yield cultural techniques were analysed by the method of revolving orthogonal design of multiple regression and to get the mathematical model 011 the yield of Lest agronomical measures. The test results shown that the sowing date should in the early of August and planting density was 2769~2923 plants/mu, and applied ammonium sulfate 51.5~56.0 kg/mu, calcium superphosphate 43.0~54.0kg/mu, potassium chloride 11.0~12.5 kg/mu.N has siguificant effect on the seed yield among five main factors, the others were sowing date, potassium fertilizer. There was significant effect in the interation of P and K.