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2007年采用60 000株/hm2(B1),90 000株/hm2(B2)2个密度,对豫玉23号等4个杂交种的果穗发育动态特性进行了研究,结果表明:(1)B1和B2从果穗花丝受精后10～45 d,正常发育成籽粒的小花数量随密度的增加而减少。果穗干重和长度的增长随时间变化呈正相关,两者均符合线性回归关系。果穗发育动态B2比B1晚2～3 d。(2)不同种植密度对果穗干重有显著影响,杂交种间、密度间、杂交种×密度互作效应均表现极显著差异。
In 2007, dynamic characteristics of ear development of 4 hybrids including Yuyu 23 were studied using 60 dendrograms per hectare (B1) and 2 densities of 90 000 per hectare (B2). The results showed that: (1) B1 And B2 from 10 ~ 45 d after fertilization silkworm, the number of florets normally developed into grains decreased with increasing density. The increase of dry weight and length of ear was positively correlated with time, both of which were in line with linear regression. Ear development dynamic B2 than B1 2 ~ 3 d. (2) The different planting densities had a significant effect on the dry weight of ears, and the intercropping density, the intercropping density × density interaction effect showed extremely significant differences.