芹菜新品种YZ09-14的Logistic模型研究

为探索芹菜生长发育规律,选用示范园区最新引进的芹菜品种YZ09-14,对其质量、高度、叶柄长度、叶柄粗度、叶片数目和发生分蘖数量等指标进行观测,并对结果进行Logistic生长曲线方程拟合。结果表明,芹菜的生长发育与定植时间的关系可以用Logistic曲线方程表示,二者之间达到了极显著水平。各个指标生长都呈现单"S"形曲线,各个曲线的拐点出现时间均是其生长的关键时期。

Research on Logistic Growth Model of a New Celery Cultivar YZ09-16 in Greenhouse

The dynamics changes of the introduced cultivar YZ09-14 were studied by determining its weight, height, petiole length, petiole diameter, leaf number and tillering number, in order to research the growth and development law of celery. The results showed that we could use the logistic growth curve to express the relationship between the growth and planting time of celery, which had the very significant difference. The growth curves of all the determined indexes showed the single S type and the inflexion appearing time of each curve was the key growth period of celery.