不同栽培措施对高粱产量的影响

为了探讨不同栽培措施对不同高粱品种产量的影响，寻求高粱获得高产的最佳栽培模式，本试验以晋杂23号和晋中405为试验品种，在山西省农业科院经济作物研究所的试验田研究了不同密度、施肥量、播期对高粱试验品种产量的影响。结果表明，‘晋杂23号’属丰产型品种，不宜密植；‘晋中405’属密植类型，以群体产量获得高产；随着播期的推迟，‘晋杂23号’和‘晋中405’的产量都呈下降趋势，且差异显著。最佳栽培措施：‘晋杂23号’为225 kg/hm2施肥水平、12万株/hm2密度水平及5月2日的播期；‘晋中405’为225 kg/hm2施肥水平、15万株/hm2密度水平及5月2日的播期。

Effect of Different Cultivation Measures on Sorghum Yield

In order to explore the effect of different cultivation measures on the yield of the different sorghum varieties and to find the optimum cultivation model for high yield of sorghum, a field trial with sorghum varieties ‘Jinza No.23’and ‘JinZhong No.405’was conducted to investigate the effect of different planting densities, fertilizer application amounts and sowing dates on sorghum yield in the experimental plot of The Industrial Crop Institute of Shanxi Academy Agricultural Sciences, China. The results showed that ‘Jinza No.23’ belonged to high-yielding variety and was not suitable for close-planting, but ‘JinZhong No. 405’ belonged to close-planting variety and could obtained high-yield through increasing the population yield; with the delay of the sowing dates, the yields of ‘Jinza No.23’ and ‘JinZhong No.405’ tended to decline and were significant difference. The best cultivation measures of ‘Jinza No.23’ were with the fertilizer application amount of 225 kg/hm2, the planting density of 120000 plants/hm2, the sowing date of May 2nd; and the best cultivation measures of ‘JinZhong No. 405’ were with the fertilizer application amount of 225 kg/hm2, the planting density of 150000 plants/hm2, the sowing date of May 2nd.