关键词: 百合, Richards 生长方程, 动态模拟, 发育规律

Abstract: In order to provide necessary technical reference for further accurate management of water and fertilizer in lily, this paper studied its growth process from vegetative growth to reproductive. with Lilium ‘Conca D,or’ as material, and fitted the measured data of plant height, leaves, stems, flower bracts by Richards equation and exponential equation, and then constructed the growth model. The results showed as follows: the plant heights equation was Y=48.151/(1+64.478e-0.235x)1/0.235; the leaves equation was Y=3.429/(1+0.006e-0.105x)1/0.001; the stems equation was Y=7.387/(1+2 245.212e-0.223x)1/0.9638; the flower bracts was Y=15.313/(1+841.027e-0.136x)1/1.687. The determination coefficients R2 of the four growth equations were 0.999, 0.985, 0.994 and 0.989, respectively. The measured values of the growth curves were highly fitted with the predicted values, and the growth law of “slow-fast-slow” was satisfied. The four growth equations revealed the growth law of lily organs from vegetative growth to reproductive growth and could predict the growth condition of the perianth piece after the bud was cracked.

Key words: Lilium L., growth equation, dynamic simulation, growth rhythm