溶解氧浓度对水稻分蘖期根系生长及氮素利用特性的影响

胡继杰,钟楚,胡志华,张均华,曹小闯,刘守坎,金千瑜,朱练峰

Effects of Dissolved Oxygen Concentration on Root Growth at Tillering Stage and Nitrogen Utilization Characteristics of Rice

HU JiJie,ZHONG Chu,HU ZhiHua,ZHANG JunHua,CAO XiaoChuang,LIU ShouKan,JIN QianYu,ZHU LianFeng

表1 溶解氧浓度对水稻分蘖期根系形态的影响

Table 1 The influence of dissolved oxygen concentration on rice root morphology at tillering stage

品种 Variety 处理 Treatment 总根长 Total root length (cm/plant) 根系总表面积 Total surface area (cm2/plant) 平均根直径 Average root diameter (mm) 根体积 Root volume (cm3/plant) 最大根长 Maximum root length (cm/plant) 根系干物重 Dry root weight (g/plant) 中浙优1号 ZZY 1 CK 3648.7a 420.6a 0.37a 3.87a 29.63c 1.59a T1 3460.2ab 398.4a 0.37a 3.68a 26.29d 1.50a T2 3703.4a 428.3a 0.37a 3.95a 33.49b 1.64a T3 3503.4ab 404.1a 0.37a 3.72a 35.20b 1.62a T4 3018.7b 394.6a 0.37a 3.13b 40.19a 1.19b IR45765-3B CK 2580.1b 328.6b 0.41a 3.34ab 23.38c 1.46b T1 2379.9b 315.2b 0.42a 3.34ab 21.25d 1.30c T2 2926.6a 373.3a 0.41a 3.80a 24.41c 1.59a T3 2480.9b 308.6b 0.40a 3.07b 28.54b 1.23c T4 1736.5c 226.2c 0.41a 2.36c 31.93a 0.90d 中旱221 ZH 221 CK 2065.6c 246.0b 0.35ab 2.14ab 23.63cd 0.98b T1 1875.9d 210.3c 0.36a 1.88b 22.43d 0.91c T2 2235.7b 243.8b 0.35ab 2.13ab 24.67c 0.99b T3 2561.3a 267.5a 0.33b 2.23a 28.17b 1.12a T4 2053.1c 231.1bc 0.36a 2.07ab 30.23a 0.99b