减源对不同密度春玉米开花后干物质及 氮、磷、钾积累转运的影响

曹玉军,吴杨,刘志铭,崔红,吕艳杰,姚凡云,魏雯雯,王永军

Effects of Sources Reduction on Accumulation and Remobilization of Dry Matter and Nitrogen, Phosphors and Potassium of Spring Maize Under Different Densities After Flowering

YuJun CAO,Yang WU,ZhiMing LIU,Hong CUI,YanJie LÜ,FanYun YAO,WenWen WEI,YongJun WANG

表5 不同处理籽粒氮磷钾积累及营养器官养分转运贡献率

Table 5 Effects of source reduction on N, P and K accumulation and the contribution of remobilized N, P and K to grain under different treatments

年份 Year 种植密度 Planting density (×104 plants/hm2) 处理 Treatment 成熟期籽粒 氮积累 Grain N at physiological maturity (g/plant) 营养器官 氮转运贡献 Proportion of remobilize N in grain from vegetative organs 成熟期籽粒 磷积累 Grain P at physiological maturity (g/plant) 营养器官 磷转运贡献 Proportion of remobilize P in grain from vegetative organs 成熟期籽粒 钾积累 Grain K at physiological maturity (g/plant) 营养器官钾 转运贡献率 Proportion of remobilize K in grain from vegetative organs 2014 6.0 CK 2.13 41.12 0.38 43.45 0.69 55.40 T1 1.56 59.11 0.35 47.24 0.57 60.74 T2 1.79 54.89 0.36 43.61 0.60 58.63 T3 1.85 50.60 0.36 43.47 0.64 60.41 9.0 CK 1.72 39.72 0.32 33.02 0.51 60.30 T1 1.41 52.60 0.25 44.99 0.41 75.14 T2 1.61 48.92 0.28 38.74 0.43 73.20 T3 1.96 35.03 0.34 31.38 0.53 59.16 2015 6.0 CK 2.15 42.64 0.35 46.56 0.67 54.30 T1 1.58 61.20 0.29 54.72 0.49 73.12 T2 1.87 52.84 0.33 48.54 0.54 63.18 T3 1.92 48.77 0.34 49.24 0.57 59.92 9.0 CK 1.72 45.75 0.32 31.41 0.49 62.91 T1 1.35 57.39 0.24 41.51 0.39 70.20 T2 1.50 53.83 0.26 37.84 0.41 73.31 T3 1.92 40.32 0.34 29.58 0.52 58.88 ANOVA 年份 Year ns ns ns ns ns ns 密度 Density ** ** * ** ** * 处理 Treatment ** ** * ** ** **