JIA Biao,WU Yang-huan,LI Jie,et al.Research on Model of the Growth and Yield of Cotton at Different Plant Densities Base on TEP[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(06):17-22.[doi:10.11942/j.issn1002-2767.2016.06.0017]
基于辐热积的棉花产量形成模拟模型研究
- Title:
- Research on Model of the Growth and Yield of Cotton at Different Plant Densities Base on TEP
- 文章编号:
- 1002-2767(2016)06-0017-06
- Keywords:
- cotton; thermal effectiveness and photosynthetically active radiation (TEP); yield formation; growth period; Gaussian model
- 分类号:
- S562
- 文献标志码:
- A
- 摘要:
- 为更好地应用辐热积监测棉花生长发育状况,试验设3个密度处理:240.0×103株?hm-2、176.0×103株?hm-2及82.5×103株?hm-2,每隔7~10 d对棉花发育状况进行观查记录,并从石河子气象站获得棉花生育期内的辐射及热量数据,初步探明辐热积与棉花产量形成的关系。结果表明:随密度减小单株铃数和单铃重呈增加趋势;鲁棉研24实收籽棉产量在密度240×103株?hm-2条件下达到最高,为4 306.8 kg?hm-2,新陆早50实收籽棉产量在密度 176×103株?hm-2 条件下达到最高,为4 267.73 kg?hm-2;产量随辐热积增加呈增加趋势,且符合线性关系,通过模拟筛选得到棉花最佳棉铃动态生长发育模型通式。高斯模拟模型可以有效预测棉花铃数生长变化。
- Abstract:
- In order to determine the relationship between cotton yield and thermal effectiveness and photosynthetically active radiation (TEP) at different plant densities.There were three plant density treatments:240.0×103,176.0×103,and 82.5×103 plants?hm-2.The number of buds and bolls were measured every 7~10 d during the growing season.Temperatures and photosynthetically active radiation were measured by a weather station during the cotton reproduction period.The results clearly indicated that the yield of cotton for the Lumianyan 24 reached the highest yield 4 306.8 kg?hm-2 at the plant density of 240 × 103 plants?hm-2 .And the yield of cotton for the Xinluzao 50 reached in the highest yield 4 267.73 kg?hm-2 at the plant density of 240 × 103 plants?hm-2.And the relationships between the accumulated TEP and yield of the cotton were best described by the liner function.The best dynamic growth model for the boll of cotton was concluded.The yield of cotton was increased with the increasing of the accumulated TEP.And the bolls of cotton could be predicted by the growth function equation.
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备注/Memo
收稿日期:2016-04-13