种植密度和施氮量对优质常规稻桂育12产量和米质的影响

李虎, 黄秋要, 吴子帅, 刘广林, 陈传华, 罗群昌, 朱其南

Effects of Planting Density and Nitrogen Application Rate on Yield and Rice Quality of High-Quality Conventional Rice Guiyu 12

Li Hu, Huang Qiuyao, Wu Zishuai, Liu Guanglin, Chen Chuanhua, Luo Qunchang, Zhu Qinan

表2 种植密度和施氮量对桂育12晚稻经济性状及产量的影响

Table 2 Effects of planting density and nitrogen application rate on economic characteristics and yield of late rice of Guiyu 12

处理 Treatment 有效穗数 Effective panicles (×106/hm2) 最高苗数 Maximum number of seedlings (×106/hm2) 成穗率 Panicle formation rate (%) 千粒重 1000-grain weight (g) 结实率 Seed-setting rate (%) 穗粒数 Grain number per panicle 穗长 Panicle length (cm) 株高 Plant height (cm) 产量 Yield (×103 kg/hm2) A1 2.79a 6.10b 46.86a 22.15a 79.94a 140.52a 24.15b 116.56cB 6.56a A2 2.78a 6.78a 41.41b 22.33a 80.81a 142.38a 24.41ab 119.09bB 6.31a A3 2.82a 6.69ab 42.32ab 22.16a 81.03a 139.22a 25.01a 124.04aA 6.41a B1 2.67bB 5.88bB 46.29aA 22.16a 80.81a 142.64a 24.41a 120.82aA 6.57a B2 2.84aA 6.58aAB 43.55abAB 22.28a 81.41a 137.47b 24.69a 120.48aA 6.36a B3 2.89aA 7.11aA 40.75bB 22.17a 79.57a 142.01ab 24.47a 118.39bB 6.34a A1B1 2.70b 5.14cC 53.15aA 21.63bB 79.24a 143.10a 23.60b 116.60bB 6.70a A1B2 2.79ab 6.03bB 46.76bA 22.47aA 79.65a 137.42a 24.46a 118.90aA 6.48a A1B3 2.89a 7.12aA 40.67cB 22.36aA 80.95a 141.03a 24.39a 114.17cC 6.48a A2B1 2.60bB 5.67bB 46.00aA 22.53a 82.63a 141.88ab 24.07a 119.70a 6.30a A2B2 2.87aA 7.20aA 39.93abAB 22.28a 81.46ab 138.72b 24.48a 118.67a 6.40a A2B3 2.86aA 7.47aA 38.31bB 22.17a 78.35b 146.53a 24.70a 118.90a 6.22a A3B1 2.71a 6.82a 39.72a 22.32a 80.57a 142.95a 25.57a 126.17aA 6.72a A3B2 2.85a 6.51a 43.97a 22.08a 83.10a 136.25a 25.13ab 123.87bAB 6.21a A3B3 2.90a 6.74a 43.28a 22.09a 79.42a 138.48a 24.32b 122.10cB 6.30a A 0.72 5.29 5.09 0.60 0.76 3.03 6.47 67.60** 1.52 B 9.23** 12.90** 5.90* 0.32 1.41 3.00 0.57 17.08** 1.66 A×B 0.53 4.51* 4.83* 3.77* 1.78 0.71 3.01 7.96** 0.79