【摘要】 在小麦、柑桔、蔬菜及苹果花芽等多种材料上试验和验证的结果表明,应用电导法配以Logistic方程求拐点温度能准确地确定植物组织的低温半致死温度(LT₅₀)。本文就该方法的提出,有关的计算过程以及试验、验证的结果加以介绍,并对它的主要优缺点进行讨论。更多还原

【Abstract】 The lethal temperatures caused by low temperature were determined with Logistic function in Triticum aestivum L., FortuneIla and Citrus medica var. sarcodac tylis Swing and Brassica Chinensis L.. It was demonstrated to be a sigmoid curve fitting in with Logistic function between percentage of electrolyte efflux from plant tissues and temperatures of treatment. The inflexion point value （temperature） of Logistic function was observed to coicide with lethal temperature (LT₅₀) of plant tissue. This paper describes the principle, method, results of examination and certification as well as application in four types of crop plants.更多还原