新疆特早熟棉花生长发育动态与有效积温关系研究

Correlation Between Synamic of Speccific Early-Maturing Cotton Growth and Development and Effective Accumulated Temperature in Northern Xinjiang

观测并分析了不同播期下棉花全生育期内的株高、节数、叶片数、植株总干物质量以及叶、茎、根等不同器官的干物重等主要生长发育性状。结果表明,全生育期内棉花主要生育特性如株高、节数、干物质积累与有效积温间的相关性均达到极显著。根据完成某一生育阶段的累积有效积温值建立了基于有效积温的棉花发育速率模型,并对该模型进行了初步验证,证实通过该模型可预测棉花发育进程。

The effective accumulated temperature, the main growth and development characters of very early -maturing cot- ton in different development stages such as plant height, fruit node number, the dry matter weights of plant and its leaves, stems and fruits were measured and analyzed. The results showed that the correlations of effective accumulated temperature to the growth and development characters in different development stages such as plant height, fruit node number and dry matter accumulation of cotton were significant. According to the above correlations, a developmental rate model of cotton based on effective accumulated temperature was set up, and the preliminary verification of the model indicated that environmental tem- perature could be used to predicted cotton development process according to the model.