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应用“4 1 6— A”最优混合设计 ,对珍珠高粱进行试验研究 ,建立以珍珠高粱产量为目标函数 ,以种植密度、施 N量、施 P2 O5量、施 K2 O量为决策变量的高产栽培数学模型 ,用电子计算机进行寻优 ,获得珍珠高粱的最高和最佳栽培方案。 1 999年下半年在广西大化县进行了珍珠高粱示范 376hm2 ,平均产量 (干粒 ,下同 )为 4 62 4 .5 kg/hm2 ;验证 8.0 0 hm2最高产量为 5 833.5 1 kg/hm2 ;平均产量为 5 2 99.5 kg/hm2。珍珠高粱习惯 (常规 )栽培产量仅有 39645 kg/hm2。因此 ,每公顷珍珠高粱模式栽培比习惯栽培增产 660～1 335 .0 kg,增幅 1 6.6%～ 33.7% ,每公顷增加纯收入 30 4 .5～ 694 .5元
Applying the “4 1 6-A” optimal mixed design, the pearl sorghum was studied and the optimal production design was established. The objective function was to set the yield of pearl sorghum as planting density, N application rate, P2 O5 application volume and K2 O dosage as decision variables High-yielding cultivation mathematical model, using computer optimization to obtain the highest and best pearl sorghum cultivation plan. In the second half of 1999, a pearl sorghum demonstration of 376hm2 was conducted in Dahua County, Guangxi. The average yield (dry grain, the same below) was 4 62.4 kg / hm2. The highest yield of 8.0 0 hm2 was verified to be 5833.51 kg / hm2. The average yield was 5299.5 kg / hm2. Pearl sorghum habit (conventional) Cultivation yield of only 39645 kg / hm2. Therefore, the yield per hectare of pearl sorghum was 660-1,335.0 kg more than that of conventional cultivation, an increase of 6.66% -33.7%, with an increase of net income of 30.4.5-694.5 yuan per hectare