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以JN2、JN5、JN6、JN7等4个不同粒型的红小豆品种为材料,研究了小豆群体干物质生产与产量形成的关系。结果表明:(1)夏播小豆的群体生产量变化表现为前期增长慢,从8月中旬开始快速增长。(2) JN2、JN5、JN6、JN7在开花期最适宜的干物重积累量分别为368．64、339．66、354．72和406．08 kg/hm2,生育后期干物质积累JN2为6 241．36 kg/hm2时产量最高,而其他3个品种后期累积量在4 000 kg/hm2左右即可达到预期目标。(3)开花期的叶面积指数,JN2应控制在6-7之间,JN6控制在4-6之间,JN5控制在4左右, JN7控制在3左右为最适,产量较高。(4)在中等肥力大田生产条件下,JN2适宜高密度(36万株/hm2)种植, JN5和JN7适宜中低密度(18万株/hm2)种植,JN6适宜中高密度(24万株/hm2)种植。
The relationship between dry matter production and yield formation of adzuki bean population was studied using four adzuki bean varieties JN2, JN5, JN6 and JN7 as materials. The results showed that: (1) The population productivity of summer sowing adzuki bean showed a slow increase in the initial period and a rapid increase from mid August. (2) The optimum dry matter weight accumulation of JN2, JN5, JN6 and JN7 at flowering stage were 368.64, 339.66, 354.72 and 406.08 kg / hm2, respectively. The dry matter accumulation JN2 at the later growth stage was 6 241 .36 kg / hm2 when the highest yield, while the other three varieties in the late accumulation of 4 000 kg / hm2 or so to achieve the desired goal. (3) Leaf area index at flowering stage, JN2 should be controlled between 6-7, JN6 control between 4-6, JN5 control at 4 or so, JN7 control at 3 or so for the optimum yield higher. (4) JN2 is suitable for planting at high density (360,000 plants / hm2), medium and low density (180,000 plants / hm2) for JN5 and JN7, and middle and high density (240,000 plants / hm2) ) Planting.