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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,研究黔苦3号苦荞春播籽粒产量与其播种量及N、P、K肥施用量间的关系,探索高产栽培优化方案。通过试验,建立了黔苦3号籽粒产量与主要农艺措施的数学模型;经对模型解析和模拟寻优分析,提出了黔苦3号籽粒产量高于2 550 kg/hm2的优化栽培技术方案:播种量63.63~70.38 kg/hm2,施N量30.62~38.38 kg/hm2,施P2O5量173.06~216.94 kg/hm2,施K2O量60.11~69.12 kg/hm2;各因子对籽粒产量影响的程度大小为播种量、施K2O量、施P2O5量、施N量。
The four factors and five levels of quadratic regression orthogonal rotation combination design method was used to study the relationship between the grain yield and the sowing rate and the N, P and K fertilizer application rates of bitter buckwheat spring seeding in Guizhou bitterness 3, and to explore the optimized plan of high yielding cultivation. Through the experiment, the mathematical model of grain yield and agronomic measures of Guizhou bitter No. 3 was established. Based on the model analysis and the simulation optimization analysis, the optimized cultivation technique scheme was proposed: the grain yield of Guizhou bitter No. 3 was higher than 2 550 kg / hm2: The seeding rate was 63.63 ~ 70.38 kg / hm2, the N application rate was 30.62 ~ 38.38 kg / hm2, the P2O5 content was 173.06 ~ 216.94 kg / hm2, and the K2O content was 60.11 ~ 69.12 kg / hm2. Amount, K2O amount, P2O5 amount, N amount.