氮钾配施对油菜产量及氮素利用的影响
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李静,闫金垚,胡文诗,李小坤,丛日环,任涛,鲁剑巍
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Effects of combined application of nitrogen and potassium on seed yield and nitrogen utilization of winter oilseed rape (Brassica napus L.)
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Jing LI,Jin-Yao YAN,Wen-Shi HU,Xiao-Kun LI,Ri-Huan CONG,Tao REN,Jian-Wei LU
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表2 不同氮肥和钾肥用量对2016-2017和2017-2018年油菜籽产量构成因素的影响
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Table 2 Effects of different nitrogen and potassium fertilizer application rates on yield components of rapeseed in 2016-2017 and 2017-2018 growing season
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处理
Treatment | 单位面积角果数
Number of pods per unit area (No. m-2) | 平均
Average | 角粒数
Seed number
(No. pod-1) | 平均
Average | 千粒重
1000 seed weight
(g) | 平均Average | | 2016/2017 | 2017/2018 | 2016/2017 | 2017/2018 | 2016/2017 | 2017/2018 | | N0 | K0 | 1245 b | 1059 b | 1152 | 24.7 a | 24.4 b | 24.5 | 3.3 a | 2.9 a | 3.1 | | K60 | 1444 ab | 1160 b | 1302 | 25.4 a | 24.7 ab | 25.0 | 3.2 a | 3.1 a | 3.2 | | K120 | 1575 a | 1290 ab | 1432 | 26.1 a | 25.4 ab | 25.8 | 3.1 a | 3.1 a | 3.1 | | K180 | 1679 a | 1503 a | 1591 | 25.8 a | 25.8 a | 25.8 | 3.1 a | 3.1 a | 3.1 | | 平均 Average | 1486 | 1253 | 1369 | 25.5 | 25.1 | 25.3 | 3.2 | 3.0 | 3.1 | | N90 | K0 | 2981 c | 2272 c | 2626 | 24.1 b | 23.4 b | 23.8 | 3.2 a | 2.9 a | 3.1 | | K60 | 3408 bc | 2742 b | 3075 | 25.7 ab | 26.3 ab | 26.0 | 3.4 a | 2.9 a | 3.1 | | K120 | 3591 ab | 3250 a | 3421 | 25.1 ab | 25.1 ab | 25.1 | 3.2 a | 2.9 a | 3.1 | | K180 | 4114 a | 3479 a | 3796 | 26.3 a | 26.6 a | 26.4 | 3.1 a | 2.9 a | 3.0 | | 平均 Average | 3523 | 2936 | 3230 | 25.3 | 25.4 | 25.3 | 3.2 | 2.9 | 3.1 | | N180 | K0 | 3649 c | 2662 c | 3156 | 24.3 c | 22.7 b | 23.5 | 3.2 b | 3.0 a | 3.1 | | K60 | 4508 b | 3593 b | 4051 | 26.3 b | 26.3 a | 26.3 | 3.4 ab | 3.0 a | 3.2 | | K120 | 4720 a | 4838 a | 4779 | 27.5 a | 26.8 a | 27.1 | 3.5 a | 3.0 a | 3.3 | | K180 | 4751 a | 5024 a | 4888 | 27.7 a | 27.0 a | 27.4 | 3.3 b | 3.0 a | 3.1 | | 平均 Average | 4407 | 4029 | 4218 | 26.5 | 25.7 | 26.1 | 3.4 | 3.0 | 3.2 | | N270 | K0 | 3455 c | 2151 d | 2803 | 24.0 c | 22.7 b | 23.4 | 3.4 a | 3.2 a | 3.3 | | K60 | 4791 b | 3626 c | 4209 | 26.2 b | 27.3 a | 26.8 | 3.5 a | 3.1 a | 3.3 | | K120 | 5406 ab | 5138 b | 5272 | 27.5 ab | 26.0 a | 26.8 | 3.3 a | 3.2 a | 3.2 | | K180 | 5953 a | 5710 a | 5832 | 28.1 a | 27.4 a | 27.7 | 3.3 a | 3.0 a | 3.2 | | 平均 Average | 4901 | 4156 | 4529 | 26.4 | 25.9 | 26.2 | 3.4 | 3.1 | 3.3 | | 方差分析 ANOVA | F值 F-value | | 氮肥 Nitrogen (N) | 491.6** | 6.3** | 9.6** | | 钾肥 Potassium (K) | 119.2** | 50.4** | 2.9* | | 年份 Year (Y) | 57.2** | 4.9* | 92.5** | | N×K | 14.9** | 3.7** | 1.0ns | | N×Y | 3.1* | 0.9ns | 2.9* | | K×Y | 6.9** | 2.3ns | 2.2ns | | N×K×Y | 1.7ns | 0.7ns | 1.7ns |
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