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针对贵州丘陵山地薏苡精量穴播机具需求,依托勺轮式精量播种机,实现薏苡多粒穴播。结合薏苡种植农艺要求,探讨机械式薏苡精量播种性能参数的最佳匹配。保证穴距的前提下,以排种器的排种粒数为评价指标,建立不同输送带速度与排种速度的函数关系,优化勺轮型孔数与排种轮导种槽数的对应关系,确定了试验参数,在排种试验台上进行薏苡排种试验。试验表明:输送带速度对排种粒数影响不显著;孔槽比18∶18时,不能满足粒数要求;孔槽比18∶9,穴距挡位140 mm,行驶速度约5 km/h(对应排种轴转速33.18 r/min)为薏苡播种机最佳参数匹配。
For mountainous areas of Guizhou Coix seedling precision cutting equipment needs, relying on spoon wheeled precision sowing machine to achieve Coix seed sowing. Combining with agronomy requirements of Coix lachryma-jobi, the optimal match of precision sowing performance parameters of Coix lachryma-jobi was discussed. Under the premise of ensuring the hole distance, the relationship between the speed of the conveyor and the seed placement speed was established based on the seed metering of the seed-metering device, and the corresponding relationship between the number of holes of the scoop- , Determine the test parameters, in the seeding test bed for Coix seed row test. The results showed that the speed of the conveyor belt had no significant effect on the seed number. The hole number was 18:18 and the hole number was 18:9. The hole distance was 140 mm and the traveling speed was about 5 km / h (Corresponding to seed shaft speed 33.18 r / min) is the best match for Coix Seed Drill.