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3 播期对稻麦周年产量的影响

Table 3 Effect of sowing date on the annual yield of rice-wheat double cropping system

水稻品种 Rice cultivar 水稻 播期 Rice Sowing date 小麦播期Wheat seeding date 水稻季Rice season 小麦季Wheat season 周年Annual 产量 Average yield (t hm-2) 日产量 Grain yield per day (kg hm-2 d-1) 占周年 产量比 Proportion of annual total yield (%) 平均产量 Average yield (t hm-2) 日产量 Grain yield per day (kg hm-2 d-1) 占周年 产量比 Proportion of annual total yield (%) 周年产量 Annual yield (t hm-2) 日产量 Grain yield per day (kg hm-2 d-1) 两季产量比 Rice/ wheat 南粳9108 Nanjing 9108 R-I W-I 11.32 a 71.65 a 58.11 8.16 a 39.04 a 41.89 19.48 a 53.96 a 1.39 W-II 59.30 7.77 b 38.85 a 40.70 19.09 b 54.23 a 1.46 W-III — — — — — — — R-II W-I 11.01 b 71.49 a 57.43 8.16 a 39.04 a 42.57 19.17 a 53.70 a 1.35 W-II 58.63 7.77 b 38.85 a 41.37 18.78 b 53.97 a 1.42 W-III 62.99 6.47 c 33.87 b 37.01 17.48 c 51.56 b 1.70 R-III W-I 10.39 c 68.81 b — — — — — — — W-II 57.21 7.77 b 38.85 a 42.79 18.16 b 52.64 a 1.34 W-III 61.63 6.47 c 33.87 b 38.37 16.86 c 50.18 b 1.61 连粳11 Lianjing 11 R-I W-I 10.74 ab 70.21 b 56.83 8.16 a 39.42 a 43.17 18.90 a 52.22 b 1.32 W-II 58.03 7.77 b 39.24 a 41.97 18.51 b 53.20 a 1.38 W-III — — — — — — — R-II W-I 10.93 a 73.85 a 57.18 8.16 a 39.42 a 42.82 19.09 a 52.64 b 1.34 W-II 58.37 7.77 b 39.24 a 41.63 18.70 b 53.63 a 1.41 W-III 62.74 6.47 c 34.23 b 37.26 17.40 c 51.83 c 1.69 R-III W-I 10.33 b 71.74 b 55.86 8.16 a 39.42 a 44.14 18.49 a 51.07 b 1.27 W-II 57.06 7.77 b 39.24 a 42.94 18.10 b 52.00 a 1.33 W-III 61.48 6.47 c 34.23 b 38.52 16.80 c 50.14 c 1.60