江淮下游不同播期对稻-麦周年作物产量、品质及温光资源利用的影响

陈天晔, 袁嘉琦, 刘艳阳, 许轲, 郭保卫, 戴其根, 霍中洋, 张洪程, 李国辉, 魏海燕

Effects of different sowing dates on crop yield, quality, and annual light-temperature resources utilization for rice-wheat double cropping system in the lower reaches of the Yangtze-Huaihe Rivers valley

Tian-Ye CHEN, Jia-Qi YUAN, Yan-Yang LIU, Ke XU, Bao-Wei GUO, Qi-Gen DAI, Zhong-Yang HUO, Hong-Cheng ZHANG, Guo-Hui LI, Hai-Yan WEI

表5 播期对稻麦周年辐射分配的影响

Table 5 Effect of sowing date on the distribution of radiation resources of rice-wheat double cropping system

水稻品种 Rice cultivar 水稻播期 Rice sowing date 小麦播期 Wheat sowing date 水稻季Rice season 小麦季Wheat season 周年Annual 辐射量 Radiation (MJ m-2) 辐射分配率 Radiation distribution date (%) 辐射量 Radiation (MJ m-2) 辐射分配率 Radiation distribution date (%) 辐射量 Radiation (MJ m-2) 两季比 Wheat season/rice season 南粳9108 Nanjing 9108 R-I W-I 3043.5 a 2773.7 a 47.98 5641.2 a 0.91 W-II 52.64 2706.8 b 46.82 5561.4 b 0.89 W-III — — — — R-II W-I 3009.9 b 2773.7 a 47.98 5692.7 a 0.92 W-II 52.06 2706.8 b 46.82 5613.0 b 0.90 W-III 2659.0 c 45.99 5516.6 c 0.88 R-III W-I 2929.8 c — — — — W-II 50.68 2706.8 a 46.82 5636.6 a 0.92 W-III 2659.0 b 45.99 5569.7 b 0.91 连粳11 Lianjing 11 R-I W-I 2979.2 a 2773.7 a 47.98 5576.9 a 0.93 W-II 51.53 2706.8 b 46.82 5497.1 b 0.91 W-III — — — — R-II W-I 2914.9 b 2773.7 a 47.98 5597.7 a 0.95 W-II 50.42 2706.8 b 46.82 5518.0 b 0.93 W-III 2659.0 c 45.99 5421.6 c 0.91 R-III W-I 2814.8 c 2773.7 a 47.98 5588.5 a 0.99 W-II 48.69 2706.8 b 46.82 5521.6 b 0.96 W-III 2659.0 c 45.99 5454.7 c 0.94