秸秆还田后效对玉米氮肥利用率的影响

邹文秀,韩晓增,陆欣春,陈旭,郝翔翔,严君

Effect of Maize Straw Return Aftereffect on Nitrogen Use Efficiency of Maize

ZOU WenXiu,HAN XiaoZeng,LU XinChun,CHEN Xu,HAO XiangXiang,YAN Jun

表1 秸秆还田后效对玉米各器官干物质积累量的影响

Table 1 Dry biomass accumulation of maize under straw return aftereffect (g/plant)

处理 Treatment 籽粒 Grain 根 Root 茎 Steam 叶 Leaf 轴 Cob 总量 Total biomass CK 129.6±3.5 d 39.1±2.7 d 55.7±1.8 c 54.5±2.9 d 31.1±1.3 d 310.0±4.9 d D0 127.7±5.7 d 31.8±2.9 e 57.7±0.7 c 57.6±1.9 c 31.8±0.9 d 306.6±8.2 d D0-20 139.1±2.2 c 41.6±1.9 c 62.1±0.6 b 63.8±0.9 b 34.0±0.4 c 340.5±4.0 c D0-35 156.9±3.7 a 46.2±2.9 ab 66.5±2.2 a 66.9±1.9 a 37.7±0.6 a 374.1±4.3 a D20-35 147.8±1.8 b 50.9±4.3 a 63.4±3.7 b 62.4±2.9 b 35.7±0.8 b 360.1±5.4 b D35 114.2±1.8 e 42.7±5.4 c 47.9±1.6 d 48.9±1.9 e 28.5±1.2 e 282.3±5.5 e D50 106.2±1.7 f 32.5±1.7 de 45.5±0.9 d 45.1±1.1 f 26.1±1.3 f 255.3±2.2 f