轻简氮肥管理对华南双季稻产量和氮肥利用率的影响

彭碧琳,李妹娟,胡香玉,钟旭华,唐湘如,刘彦卓,梁开明,潘俊峰,黄农荣,傅友强,胡锐

Effects of Simplified Nitrogen Managements on Grain Yield and Nitrogen Use Efficiency of Double-Cropping Rice in South China

PENG BiLin,LI MeiJuan,HU XiangYu,ZHONG XuHua,TANG XiangRu,LIU YanZhuo,LIANG KaiMing,PAN JunFeng,HUANG NongRong,FU YouQiang,HU Rui

表8 不同氮肥管理下水稻稻米品质

Table 8 Rice grain quality under different nitrogen managements

年份/季节 Year/Season 处理 Treatment 碾磨品质 Milling quality 蒸煮食味品质 Cooking & eating 外观品质Apparent quality 糙米率 Brown rice rate (%) 精米率 Milled rice rate (%) 整精米率 Head rice rate (%) 直连淀粉含量 Amylose content (%) 胶稠度 Gel consistency (mm) 垩白粒率 Chalky grain rate (%) 垩白度 Chalkiness (%) 粒长 Grain length (mm) 长/宽 length / width 2018晚季 Late season of 2018 TC 81.75±0.12a 73.60±0.31a 68.48±0.73a 16.75±0.28a 61.00±1.47a 10.00±2.04a 1.30±0.30a 6.58±0.02bc 3.30±0.00a SNM1 81.35±0.17a 73.03±0.12a 66.68±0.54a 17.03±0.14a 60.50±1.94a 5.00±0.71c 0.68±0.11b 6.55±0.03c 3.30±0.00a SNM2 81.50±0.38a 73.23±0.46a 67.43±1.03a 16.83±0.13a 59.50±1.19a 6.25±1.6bc 0.53±0.13b 6.65±0.03b 3.30±0.00a SNM3 81.60±0.12a 72.95±0.18a 67.58±0.41a 16.93±0.18a 58.25±1.31a 7.50±0.96b 0.63±0.10b 6.78±0.02a 3.33±0.03a F值（F value） 0.55ns 0.93ns 0.99ns 0.33ns 0.62ns 8.39** 5.73* 16.33** 1.00ns 2019早季 Early season of 2019 FP 80.93±0.84a 71.43±0.71a 60.40±0.35a 15.67±0.15a 77.33±1.33a 8.67±1.67a 1.17±0.37a 6.27±0.03a 3.20±0.00a TC 81.03±0.61a 71.70±0.31a 63.70±0.85a 15.57±0.03a 78.00±0.58a 5.33±0.67a 0.57±0.09a 6.27±0.03a 3.20±0.00a SNM2 80.27±0.35a 71.17±0.45a 62.97±2.14a 15.63±0.12a 76.00±2.00a 4.00±1.15a 0.57±0.15a 6.30±0.00a 3.20±0.00a SNM4 80.77±0.13a 71.80±0.21a 63.10±0.81a 15.40±0.10a 75.33±0.88a 6.33±1.45a 0.93±0.24a 6.33±0.03a 3.20±0.00a SNM5 80.57±0.29a 71.70±0.25a 62.20±1.39a 15.20±0.26a 75.33±1.33a 5.00±0.58a 0.77±0.09a 6.27±0.03a 3.17±0.03a F值（F value） 0.32ns 1.00ns 0.30ns 1.40ns 0.68ns 2.67ns 2.53ns 2.29ns 1.00ns