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采用四因子五水平二次回归正交旋转组合设计方法试验,以半夏产量为目标,以栽培密度、有机肥、氮肥、磷肥施用量为探讨对象。建立了喀斯特温凉气候区半夏产量与半夏栽培密度、有机肥、氮肥、磷肥施用量间关系的数学模型,通过模拟寻优,提出了半夏产量≥22 500kg/hm2的相应的农艺措施为:栽培密度713.88万～741.06万粒/hm2,有机肥施用量31.21～36.29t/hm2,氮肥施用量112.15～133.85kg/hm2,磷肥施用量259.64～292.89kg/hm2;半夏产量≥24 000kg/hm2的相应的农艺措施为:栽培密度738.90万～764.10万粒/hm2,有机肥施用量30.96～36.54t/hm2,氮肥施用量111.10～134.90kg/hm2,磷肥施用量253.11～292.89kg/hm2。
The four factors and five levels of quadratic regression orthogonal rotation combination design test to Pinellia production as the goal, to planting density, organic fertilizer, nitrogen, phosphorus fertilizer as the object of study. The mathematical model of the relationship between the production of Pinellia ternata and the cultivation density of Pinellia ternata, the relationship between organic manure, nitrogen fertilizer and phosphorus fertilizer application was established. Through simulation optimization, the corresponding agronomic measures with the yield of 22 500 kg / hm2 The results are as follows: cultivation density of 7138800 ~ 7410600 / hm2, organic fertilizer application of 31.21 ~ 36.29t / hm2, nitrogen fertilizer application of 112.15 ~ 133.85kg / hm2, phosphorus fertilizer application of 259.64 ~ 292.89kg / hm2; The corresponding agronomic measures were as follows: cultivation density 738.90 ~ 76410000 / hm2, organic fertilizer application rate 30.96 ~ 36.54t / hm2, nitrogen application rate 111.10 ~ 134.90kg / hm2, and phosphorus application rate 253.11 ~ 292.89kg / hm2 .