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在 3种密度下对绵农 4号、绵农 3号的分蘖及成穗特性进行了初步研究 ,结果表明 :绵农 4号、绵农 3号的分蘖速度和分蘖力皆为中等 ,中等密度条件下 ,有效分蘖期每天可形成 0 .15蘖 ,各期总蘖数为 3.7左右 ,低于绵阳 11号 ;与绵阳 11号分蘖速度的差异主要在有效分蘖期 ;绵农 4号、绵农 3号的成穗率为 55%左右 ,低于绵阳 11号 ;但分蘖和主穗的差异较小 ,分蘖穗重占主穗重的 80 %左右 ,茎蘖穗重变异系数 15%左右 ,穗子大小均匀一致 ,小穗相对较少 ,小穗较大 ,这些性状都优于绵阳 11号。绵农 4号、绵农 3号大穗大粒特性较绵阳 11号更为突出 ,其常规种植密度应小于绵阳 11号
The results showed that the tillering and tillering capacities of Miannong 4 and Miannong 3 were medium and medium density Under the conditions, the effective tillering stage can form 0.15 tillers per day, the total tiller number of each stage is about 3.7, lower than that of Mianyang 11; and Mianyang 11 tillering speed is mainly in the effective tillering stage; No. 3 had a spike rate of about 55%, which was lower than that of Mianyang 11. However, the difference between tillering and main spike was small. The tillering spike weight accounted for about 80% of the total spike weight and the tillering spike weight coefficient of variation was about 15% Uniform size, relatively small spikelets, large spikelets, these traits are superior to Mianyang 11th. Mianong 4 and Mianong 3 were more prominent than Mianyang 11, and their conventional planting density should be less than Mianyang 11