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为明确内蒙古东部干旱半干旱地区绿豆种植的适宜播期及密度,以半蔓生型和直立型绿豆品种为试验材料,研究不同播期、密度绿豆群体生长及产量性状的变化。结果表明,随着播期的推迟绿豆群体叶面积指数、株高、单荚粒数大体逐渐下降,单株分枝数、单株荚数、单位面积子粒产量大体先升后降。绿豆种植的适宜播期在5月下旬-6月上旬,半蔓生型品种在种植密度为23万株/hm~2时产量最高,若晚播应加大种植密度到27~30万株/hm~2;直立型品种适宜高密度种植,不适宜晚播,适宜种植密度为27~30万株/hm~2。
In order to clarify the suitable sowing date and planting density of mung bean in arid and semiarid areas of eastern Inner Mongolia, the semi-invasive and upright mung bean varieties were used as experimental materials to study the changes of growth and yield traits of mung bean at different sowing dates and densities. The results showed that with the delay of sowing date, the leaf area index, plant height and single pod number of mung bean population generally decreased gradually. The number of branches per plant, the number of pods per plant and the yield of grain per unit area increased first and then decreased. The suitable sowing date of mung bean planting is from late May to early June, when the planting density is 230,000 plants / hm ~ 2, the yield of semi-invasive varieties is the highest. If late sowing date, planting density should be increased to 27-30,000 plants / hm ~ 2; vertical varieties suitable for high-density planting, not suitable for late sowing, suitable planting density of 27 to 300000 plants / hm ~ 2.