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3 秸秆还田后效对玉米各器官氮素累积量的影响

Table 3 Nitrogen accumulation in different organs of maize under different straw return aftereffect

处理 Treatment	氮素累积量Nitrogen accumulation (mg/plant)
处理 Treatment	籽粒 Grain	根 Root	茎 Steam	叶 Leaf	轴 Cob	总量 Total
CK	1568.2±139.0 cd	125.7±17.4 bc	96.0±4.4 b	189.0±9.7 b	106. 9±3.0 d	2085.7±135.1 c
D₀	1558.4 ±179.1 cd	135.1±16.2 ab	101.0±3.3 b	199.3±8.0 b	114.1±9.3 cd	2107.9 ±166.1 c
D_0-20	1722.2±64.7 bc	137.0±10.9 ab	108.8±1.5 a	228.7 ±17.4 a	117.8±1.5 bc	2314.5±39.8 b
D_0-35	1975.8±136.1 a	150.1±12.9 ab	116.0±5.2 a	234.4±12.6 a	129.8±3.1 a	2606.1±135.7 a
D_20-35	1828.0±180.4 ab	162.1±29.2 a	111.6±9.6 a	218.2±11.6 a	123. 7±3.5 ab	2443.5±171.5 ab
D₃₅	1487.9±209.5 d	134.3±20.9 ab	84.3±4.0 c	169.5±5.2 c	98.4±5.6 e	1974.3±199.0 c
D₅₀	1335.8±29.2 d	99.8±6.3 c	80.1±2.7 c	156.1±4.3 c	89.9±4.7 f	1761.6±25.6 d