人参生长过程中根重变化规律的研究

Studies on Root Weight Changes during Ginseng Growth

通过田间试验,对1993-2001年人参生长过程中根重变化规律进行了研究,并采用数学模拟的方法,对参根增重过程中某些数量规律和特点进行了分析。结果表明:参根增重的变化过程为一个S形曲线,曲线特征为逻辑斯谛(Logistie)增长曲线;参根增重速度(V)是一个连续变化的单峰曲线,极值点出现在第5年,年最大增重速度为22.65 g;突变点出现在t1=3.5(年),t2=6(年),在t1之前和t2之后,根重增长缓慢,在t1～t2之间,根重增长迅速。

Law of ginseng root weight changes during ginseng growth was tested by the field experiment from 1993 to 2001. Quantity laws and features were analyzed using mathematical simulation method. The results show that increase process of ginseng root weight presents an 'S' curve. The curve is of Logistic increase curve; weight increase velocity of ginseng root presents a successive change curve with a single peak,its extreme value point is at the fifth year, its weight increase maximum velocity is 23 .0 g, and its sudden change point is at t1 = 3.5(year) and t2 = 6(year) . Before t1, and after t2, root weight increase velocity is low;between t1 and t2 ,the velocity is high.