A leaf inclination angle distribution model, which is applicable to simulate leaf inclination angle distribution in six heights of layered canopy at different growth stages, was established by component factors affecting plant type in rice. The accuracy of the simulation results was validated by measured values from a field experiment. The coefficient of determination (R2) and the root mean square error (RMSE) between the simulated and measured values were 0.9472 and 3.93%, respectively. The simulation results showed that the distribution of leaf inclination angles differed among the three plant types. The leaf inclination angles were larger in the compact variety Liangyoupeijiu with erect leaves than in the loose variety Shanyou 63 with droopy leaves and the intermediate variety Liangyou Y06. The leaf inclination angles were distributed in the lower range in Shanyou 63, which matched up with field measurements. The distribution of leaf inclination angles in the same variety changed throughout the seven growth stages. The leaf inclination angles enlarged gradually from transplanting to booting. During the post-booting period, the leaf inclination angle increased in Shanyou 63 and Liangyou Y06, but changed little in Liangyoupeijiu. At every growth stage of each variety, canopy leaf inclination angle distribution on the six heights of canopy layers was variable. As canopy height increased, the layered leaf area index (LAI) decreased in all the three plant types. However, while the leaf inclination angles showed little change in Liangyoupeijiu, they became larger in Shanyou 63 but smaller in Liangyou Y06. The simulation results used in the constructed model were very similar to the actual measurement values. The model provides a method for estimating canopy leaf inclination angle distribution in rice production.
ZHANG Xiao-cui, LU Chuan-gen, HU Ning, YAO Ke-min, ZHANG Qi-jun, DAI Qi-gen
. Simulation of Canopy Leaf Inclination Angle in Rice[J]. Rice Science, 2013
, 20(6)
: 434
-441
.
DOI: 10.1016/S1672-6308(13)60161-4
Donald C M. 1968. The breeding of crop ideotypes. Euphytica, 17: 385–403.
Gao L Z, Jin Z Q, Zhang G S, Shi C L, Ge D K. 2000. A numerical model to simulate the incident radiation and photosynthate for rice canopies with optimum plant type. J Jiangsu Agric Sci, 16 (1): 1–9. (in Chinese with English abstract)
Li Y M, Wang R C, Wang X Z, Shen Z Q. 2003. Simulating rice leaf angle inclination distribution by elliptical distribution function. J Biomath, 18(1): 105–108. (in Chinese with English abstract)
Ling Q H. 2000. Crop Population Quality. Shanghai: Shanghai Scientific and Technical Publisher: 59–69. (in Chinese)
Liu J D, Cao W X, Jin Z Q, Yu Q. 1997. An agrometeorological model for simulation of radiation distribution in maize canopy. J Nanjing Agric Univ, 20(3): 13–19. (in Chinese with English abstract)
Liu S D, Zhang F C, Hu N, Liu J. 2008. Simulative study on the light distribution in rice canopy with different crop type. J Anhui Agric Sci, 36(11): 4375–4378, 4385. (in Chinese with English abstract)
Lu C G, Yao K M, Hu N. 2011. Agricultural performance and analysis of a model for describing layered leaf area index of rice. Agric Sci Chin, 10(3): 351–362.
Matsuo T M. 1990a. Great Achievement of Rice Science, Morphology. Tokyo: Nousangyoson Culture Society, (1): 419–423. (in Japanese)
Matsuo T M. 1990b. Great Achievement of Rice Science, Physiology. Tokyo: Nousangyoson Culture Society, (2): 238–242. (in Japanese)
Reynolds J F, Chen J L, Harley P C, Hibert D W, Dougherty R L, Tenhunen J D. 1992. Modeling the effects of elevated CO2 on plants: Extrapolating leaf response to a canopy. Agric Forest Meteor, 61(1-2): 69–94.
Ross J, Nilson T. 1968. A mathematical model of radiation regime of the plant cover. In: Actinometry and Atmospheric Optics. Tallinn, Valgus: 263–281. (in Russian)
Shen G R, Wang R C, Li Y M, Wang S Z, Shen Z Q. 2001. Study on rice cluster architecture and radiation transfer. Acta Agron Sin, 27(6): 769–775. (in Chinese with English abstract)
Shen N W, Qian Q, Zhang G H. 2009. Research progress on rice rolled leaf and its application in breeding program. Mol Plant Breeding, 7(5): 852–860. (in Chinese with English abstract)
Yu Q. 1994. A study of crop growth model and climate productivity. Nanjing: Nanjing University. (in Chinese)
Zhang J, Wang Y M, Zhao Y D, Li J P. 2009. Dynamic simulation of leaf inclination angle distribution based on ellipsoidal function. Trans Chin Soc Agric Mach, 40(4): 157–160. (in Chinese with English abstract)
Zhang R H. 1996. Experimental Remote Sensing Model and Its Land Surface Process. Beijing: Science Press: 129–131. (in Chinese)
