大豆不同密度对群体结构的影响 |
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引用本文: | 王晓梅 房正. 大豆不同密度对群体结构的影响[J]. 吉林农业科学, 1996, 0(4): 39-42 |
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作者姓名: | 王晓梅 房正 |
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作者单位: | [1]吉林省农业学校 [2]吉林市欢喜乡农业站 |
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摘 要: | 本试验研究了大豆3种不同密度下,株高、叶面积指数、净同化率变化规律。研究结果表明:亚有限结实习性大豆品种成熟期最适株高90-95cm,结荚初期最适叶面积指数为4-4.5,稳定时间40~45d,净同化率两次高峰期应在开花盛期和鼓粒期,分别为12~14g/m2.d和7~7.5g/m2·d,适宜密度为20万株/hm2。从中掌握大豆各个时期的丰产长相。
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关 键 词: | 大豆;不同密度;群体结构 |
The Effect of Different Densities on Population Structure in Soybean |
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Abstract: | In order to research of the law of change of plant height,leaf area index(LAI)and net assimilation rate(NAR),the semi-determinate soybean cultivars were compared in different density.The results showed the optimum plant density was 2000 000 plant/hm2,plant height was 90-95cm on maturing,leaf area index of soybean population was 4 ̄4.5 on pod bearing,continuing 45 day, and high net assimilation rate were 12 ̄14g/m2·d on flowering and 7 ̄7. 5g/m2·d on pob filling. |
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Keywords: | Soybean Different densities Population sturcture |
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