饲用甜高粱种植密度与行距对草产量的影响

摘要

[Objective] The aim was to explore high-yielding cultivation techniques for forage sweet sorghum. [Method] The effects of planting density and row spacing on plant productivity and grass yield of forage sweet sorghum (Sorghum bicolor (L.)Moench) were compared using split-plot design and LSD method of IBMSPSSStatisticsv22.[Result]The planting density and row spacing had important influence on the plant productivity and yield of forage sweet sorghum. The optimum planting densityrow spacing combination for plant productivity of forage sweet sorghum was A1B4, i.e., planting density of 75000 plants/hm2 and row spacing of 40 cm, and the optimum combination for yield of forage sweet sorghum was A2B4, i.e., planting density of 225000 plants/hm2 and row spacing of 40 cm. [Conclusion] This study will provide theoretical basis and technical support for the production practice of forage sweet sorghum.%[目的]为了饲用甜高粱丰产丰收,探索其高产栽培技术.[方法]采用列区试验设计与软件IBM.SPSS.Statistics.v22的LSD法,对饲用甜高粱的种植密度与播种行距进行了单株生产力及其草产量的比较试验.[结果]种植密度与行距对饲用甜高粱单株生产力、草产量均具有重要影响.明确了饲用甜高粱高产配套栽培技术的优化组合:单株生产力最大的优化组合为A1B4,即种植密度为7.50万株/hm2与播种行距为40 cm的配置;获得最高产量的优化组合为A2B4,即种植密度为22.50万株/hm2与播种行距为40 cm的配置.[结论]为种植饲用甜高粱的生产实践提了供理论依据和技术支撑.