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3 不同减源处理干物质积累与转运

Table 3 Effects of different source reduction on dry matter accumulation and transport

年份 Year 种植密度 Planting density (×104 plants/hm2) 处理 Treatment 叶片干重 Leaf weight (g) 转运量 Remobilization (g/plant) 转运率 Remobilization efficiency (%) 茎鞘干重 Stem-sheath weight (g/plant) 转运量 Remobilization (g/plant) 转运率 Remobilization efficiency (%) 吐丝期 Silking stage 成熟期 Mature stage 吐丝期 Silking stage 成熟期 Mature stage 2014 6.0 CK 46.0a 38.3a 7.7b 16.7d 136.2a 122.2a 14.0d 10.3c T1 30.5d 21.6d 8.9a 29.1a 136.3a 108.0c 28.5a 20.8a T2 38.0c 29.4c 8.6a 22.5b 136.1a 110.4c 25.6b 18.8a T3 42.0b 33.5b 8.5ab 20.3c 135.9a 117.1b 18.8c 13.7b 9.0 CK 42.0a 35.5a 6.5a 15.9c 124.8a 108.1a 16.8c 13.4c T1 30.7d 24.0d 6.7a 21.8a 124.3a 100.7 23.7a 19.0a T2 33.5c 27.1c 6.4a 19.2b 125.0a 104.2 20.7b 16.6b T3 36.1b 30.2b 6.0b 16.5c 124.2a 106.5 17.7c 14.3c 2015 6.0 CK 45.4a 38.4a 7.0b 15.5d 140.9a 123.7 17.2d 12.2c T1 32.2d 23.0d 9.2a 28.4a 141.0a 109.7 31.3a 22.2a T2 38.8c 30.1c 8.7a 22.4b 140.5a 114.9 25.6b 18.2b T3 41.1b 32.7b 8.4ab 20.5c 141.1a 120.6 20.5c 14.5c 9.0 CK 42.3a 35.8a 6.5a 15.3c 127.1a 110.6 16.5c 13.0c T1 30.3d 23.2d 6.9a 23.2a 127.1a 100.3 26.8a 21.1a T2 32.7c 26.0c 6.7a 20.5b 127.4a 104.3 23.2b 18.2b T3 36.7b 30.7b 6.1a 16.4c 127.5a 110.0 17.5c 13.7c