机插密度和穗肥减量对优质食味水稻品种籽粒淀粉合成的影响

陈云, 刘昆, 张宏路, 李思宇, 张亚军, 韦佳利, 张耗, 顾骏飞, 刘立军, 杨建昌

Effects of machine transplanting density and panicle nitrogen fertilizer reduction on grains starch synthesis in good taste rice cultivars

CHEN Yun, LIU Kun, ZHANG Hong-Lu, LI Si-Yu, ZHANG Ya-Jun, WEI Jia-Li, ZHANG Hao, GU Jun-Fei, LIU Li-Jun, YANG Jian-Chang

表4 穗肥减半对优质食味水稻品种产量、直链淀粉含量、总淀粉含量和食味值的影响(2019年)

Table 4 Effects of halving panicle nitrogen fertilizer on grain yield, amylose content, total starch content and taste value in good taste rice cultivars in 2019

品种 Cultivar 处理 Treatment 产量 Grain yield (t hm-2) 直链淀粉含量 Amylose content (%) 支链淀粉含量 Amylopectin content (%) 总淀粉含量 Total starch content (%) 食味值 Taste value 南粳9108 Nanjing 9108 正常穗肥用量 NR 11.3 a 11.5 a 54.8 a 66.3 a 75.9 b 穗肥用量减半 HR 11.0 a 10.9 b 54.9 a 65.8 a 79.6 a 南粳5055 Nanjing 5055 正常穗肥用量 NR 10.7 a 10.2 a 55.9 a 66.1 a 78.4 b 穗肥用量减半 HR 10.4 a 9.5 b 53.7 b 63.2 b 82.7 a 南粳46 Nanjing 46 正常穗肥用量 NR 10.1 a 11.3 a 55.2 a 66.5 a 73.3 b 穗肥用量减半 HR 9.9 a 10.4 b 54.1 a 63.5 a 78.6 a