通过正交试验研究了主要栽培因子对泸杂四号高粱产量构成因素及产量的影响 ,提出了该品种的最适播期为3月 2 0日～ 4月 5日 ,最佳种植密度为 80 0 0～ 10 0 0 0株 ,最优施肥方案为 30kg/ 6 6 7m2 尿素、30kg/ 6 6 7m2 过磷酸钙、2 0 0 0kg/ 6 6 7m2 人畜粪作底肥、提苗肥、拔节孕穗和穗粒肥四次施入。 The orthogonal experiment was conducted to study the effects of major cultural factors on the yield components and yield of Lujiang No.4 sorghum sorghum. The optimal sowing date of the cultivars was from March 20 to April 5 and the optimum planting density was 80 0 0 ~ 10 0 0 0 strains, the optimal fertilization program was 30kg / 6 6m2 urea, 30kg / 667m2 superphosphate, 20000kg / 667m2 human and animal manure as base fertilizer, raising seedling fertilizer, jointing booting and Spike fertilizer four times applied.