双季稻双直播模式不同早稻秸秆还田方式下氮肥运筹对晚稻生长发育和土壤理化性质的影响

江敏, 何爱斌, 孙会娟, 满建国, 聂立孝

Effects of Nitrogen Management on Growth and Development, Soil Physical and Chemical Properties of Late-Season Rice under Different Straw Retention Treatments of Early-Season Rice in Direct Seeding Mode of Double-Season Rice

Jiang Min, He Aibin, Sun Huijuan, Man Jianguo, Nie Lixiao

表1 不同早稻秸秆还田方式下2种氮肥运筹对晚稻产量及其构成因素的影响

Table 1 Effects of different straw retention treatments of early-season rice on yield and its components of late-season rice under two nitrogen managements

氮肥运筹 Nitrogen management 处理 Treatment 产量 Yield (t/hm2) 穗数 Panicle number (×104/hm2) 穗粒数 Grain number per panicle 结实率 Seed-setting rate (%) 千粒重 1000-grain weight (g) N1 CK 8.23±0.11de 518±11d 81±3cd 83.0±1.0c 21.4±0.3a SR 8.64±0.07c 534±26c 85±2bcd 82.8±2.2c 20.8±0.5bc SR+L 9.06±0.13ab 542±9b 82±2cd 88.8±1.1a 20.8±0.1bc SR+S 7.98±0.28e 424±23f 101±3a 81.3±2.0c 20.7±0.4bc SR+L+S 7.98±0.18e 507±46e 84±9bcd 81.8±3.1c 20.8±0.3bc 平均 8.38B 505B 86A 83.5A 20.9A N2 CK 8.50±0.27cd 509±35e 86±6b 83.8±1.4bc 20.7±0.7bc SR 8.75±0.19bc 542±13b 80±3d 86.8±2.1ab 21.1±0.2abc SR+L 9.37±0.33a 562±13a 81±4d 89.5±1.3a 20.9±0.2bc SR+S 8.62±0.44cd 532±32c 82±3cd 84.5±2.4bc 21.1±0.2ab SR+L+S 8.66±0.49c 542±20b 85±5bc 82.3±2.7c 20.6±0.3c 平均 8.78A 537A 83B 85.4A 20.9A ANOVA N ** *** ** ** ns S *** *** *** *** * N×S ** *** *** * **