水稻杰优8号在不同施氮量、栽培密度条件下的高产模型研究

Studies on High Yield Model of Rice 'Jieyou 8' in Different Nitrogen and Planting Density Conditions

以杂交水稻杰优8号为试验材料,采用二元二次正交回归旋转组合设计,研究施氮量、栽培密度两个主要栽培因素对杰优8号产量的影响,建立了这两个因素与产量的数学模型:Y=10 820.56+114.16X1+808.93X2-1 204.14X12-928.38X22-182.29X1X2。通过寻优,确立了杰优8号的最佳施氮量为270 kg/hm2,最佳栽培密度为145万株/hm2,产量可达11 290.56 kg/hm2。

With the hybrid rice ＇Jieyou 8＇as the tested material, and using two elements two orthogonal rotational regression combination design, the relationship between the yield and nitrogen application rate and planting density was studied. A mathematical model of two factors with yield was established： Y=10 820.56 ＋ 114.16X1 ＋ 808.93X2- 1204.14X12- 928.38X22 - 182.29XIX〉 Through optimization, the optimum amount of nitrogen applying rate of＇ Jieyou 8＇was 270 kg/hm1, the best planting density was 145 strain/hm2. At this density and nitrogen conditions, high yield of 11 290.56 kg/hm2 can be reached.