基于季节性降雨的双季稻生育后期干湿交替灌溉对稻谷产量及品质的影响

刘萍, 邵彩虹, 张红林, 刘光荣

Effects of Dry-Wet Alternate Irrigation on Double Cropping Rice Yield and Quality during Late Development Stage under Seasonal Rain Condition

Liu Ping, Shao Caihong, Zhang Honglin, Liu Guangrong

表2 齐穗后停止灌溉时间对双季稻产量的影响

Table 2 Effects of stop-irrigation time after full-heading on double cropping rice yield

品种 Variety 处理 Treatment 有效穗数 Productive panicle (×104/hm2) 穗粒数 Grains per panicle 结实率 Seed setting rate (%) 千粒重 1000-grain weight (g) 理论产量 Theoretical yield (kg/hm2) 实际产量 Harvested yield (kg/hm2) 湘早籼45 0d 370.5Bb 85.2Bb 85.8Aa 23.3Aa 6296.2Bb 6634.5ABa Xiangzaoxian 45 7d 367.5Bb 92.4Aa 85.5Aa 23.3Aa 6755.1Aa 6826.5Aa 14d 391.5Aa 83.7Bbc 81.2Bb 22.8ABab 6055.5Cc 6304.5Bb CK 403.5Aa 82.5Bc 81.3Bb 22.3Bb 6031.6Cc 5719.5Cc 泰优398 0d 351.0Aa 143.1Aa 81.2Bc 22.9Bb 8493.0Bb 8419.5ABb Taiyou 398 7d 355.5 Aa 141.2ABab 85.7Aa 23.6Aa 8724.0Aa 8536.5Aa 14d 357.0Aa 139.8ABb 83.8ABab 23.3Aa 8391.0Bb 8287.5Bc CK 358.5Aa 137.7Bb 82.2Bbc 23.1ABa 7960.5Cc 7687.5Cd