秸秆还田后效对玉米氮肥利用率的影响
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邹文秀,韩晓增,陆欣春,陈旭,郝翔翔,严君
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Effect of Maize Straw Return Aftereffect on Nitrogen Use Efficiency of Maize
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ZOU WenXiu,HAN XiaoZeng,LU XinChun,CHEN Xu,HAO XiangXiang,YAN Jun
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表4 秸秆还田后效对玉米各器官15N积累量及分配率的影响
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Table 4 15N accumulation and distribution in different organs of maize under straw return aftereffect
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处理
Treatment | 累积量 Accumulation (mg/plant) | 比例 Proportion (%) | 籽粒
Grain | 根
Root | 茎
Steam | 叶
Leaf | 轴
Cob | 籽粒
Grain | 根
Root | 茎
Steam | 叶
Leaf | 轴
Cob | | CK | 408.8±29.4 d | 20.6±0.9 b | 18.8±0.9 b | 45.2±1.6 d | 37.7±1.2 cd | 77.0 | 3.8 | 3.6 | 8.5 | 7.1 | | D0 | 438.8±34.1 cd | 37.3±9.9 a | 14.8±1.6 c | 47.0±1.5 cd | 39.8±3.3 c | 76.0 | 6.5 | 2.5 | 8.1 | 6.9 | | D0-20 | 491.3±22.4 bc | 33.0±2.9 a | 16.8±1.3 bc | 57.7±4.8 bc | 45.8±1.2 b | 76.2 | 5.1 | 2.6 | 9.0 | 7.1 | | D0-35 | 564.0±14.9 a | 38.1±0.9 a | 28.2±1.7 a | 70.8±7.2 a | 59.3±2.2 a | 74.2 | 5.0 | 3.7 | 9.3 | 7.8 | | D20-35 | 537.1±18.8 ab | 36.4±2.5 a | 27.4±2.4 a | 68.1±9.5 ab | 56.4±1.2 a | 74.1 | 5.0 | 3.8 | 9.3 | 7.8 | | D35 | 451.7±16.1 cd | 21.7±0.8 b | 19.5±0.8 b | 47.5±1.3 cd | 33.9±0.8 de | 78.7 | 3.8 | 3.4 | 8.1 | 5.9 | | D50 | 407.5±19.6 d | 20.4±0.9 b | 18.0±0.9 bc | 44.3±0.7 d | 318.0±0.4 e | 78.1 | 3.9 | 3.5 | 8.4 | 6.1 |
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