密度与行距配置对向日葵冠层结构及光合特性的影响

凌一波, 冯云格, 王斌杰, 张凯, 陈年来

Effects of Density and Row Spacing on Canopy Structure and Photosynthetic Characteristics in Sunflower

Ling Yibo, Feng Yunge, Wang Binjie, Zhang Kai, Chen Nianlai

表3 密度与行距对向日葵盛花期叶绿素含量和光合特性的影响

Table 3 Effects of density and row spacing on chloroghyll content and photosynthetic function of sunflower at flowering stage

处理 Treatment 叶绿素含量Chlorophyll content (mg/g) Pn [μmol/(m2·s)] Tr [mmol/(m2·s)] 上Above 中Middle 下Bottom 上Above 中Middle 下Bottom 上Above 中Middle 下Bottom D1R1 2.38a 2.67a 2.18ab 15.89ab 7.62a 3.43a 7.93a 4.44a 3.14a D1R2 2.46a 2.83a 2.42a 16.89a 8.07a 4.12a 8.13a 5.00a 3.25a D1R3 2.45a 2.66a 2.24a 16.75a 7.99a 3.32a 7.62ab 4.91a 2.87ab D2R1 2.37a 2.61a 1.74c 14.98abc 4.81bc 0.83b 6.33c 2.59bc 2.18cd D2R2 2.45a 2.66a 1.84bc 15.47abc 5.39b 1.58b 7.16b 3.00b 2.45bc D2R3 2.28a 2.60a 1.71c 14.35bc 4.52c 0.58b 5.86cd 2.35c 2.00cde D3R1 2.31a 2.54a 1.27d 11.60d 1.64e -1.01c 5.47d 2.22c 1.60ef D3R2 2.20a 2.58a 1.09d 11.22d 1.43e -1.87c 5.33d 2.03c 1.33f D3R3 2.34a 2.63a 1.66c 13.75c 2.94d 0.44b 6.21c 2.98b 1.79def