| To investigate the effect of sowing dates on the growth, development, and yield of late rice in the central Guangxi region, the experiment was conducted using the late rice variety "Yexiang Youlisi" in the suburb of Shatang Town, Liuzhou City in 2022. Four sowing dates were set, and the differences in the developmental stages, plant height, dry weight, and yield of late rice under different sowing dates were compared. The results showed that during the early nutritional stage, the time required for S1-S4 was basically the same.During the reproductive stage, the time needed for S3 and S4 was significantly longer than that for S1 and S2. The plant height and aboveground dry weight of S1 and S2 were significantly higher than those of S3 and S4, and the yield factors of S1 and S2 were significantly better than those of S3 and S4. However, the various indicators of growth, development, and yield formation for S1 and S2 showed no significant differences. In the central Guangxi region, there was little difference in the growth, development, and yield of late rice sown in mid to late July, but there was poorer growth and development, and lower yield when sown in late July, and there was even a possibility of complete crop failure. To make full use of light and temperature resources, and alleviate the pressure of simultaneous harvesting and planting of double cropping rice, mid-July is the optimal sowing period for late rice in the central Guangxi region. |
