种植密度和植物生长调节剂对玉米茎秆性状的影响及调控

徐田军,吕天放,陈传永,刘月娥,张译天,刘秀芝,赵久然,王荣焕

Effects of Plant Density and Plant Growth Regulator on Stalk Traits of Maize and Their Regulation

XU TianJun,LÜ TianFang,CHEN ChuanYong,LIU YueE,ZHANG YiTian,LIU XiuZhi,ZHAO JiuRan,WANG RongHuan

表5 不同处理条件下玉米茎秆外皮穿刺强度变化

Table 5 The change of rind penetration strength of maize basal culm under different treatments (N·mm-2)

年际 Year 密度 Plant density (×104 plant/hm2) 处理 Treatment 节位 Node 12展叶期 V12 吐丝期Silking stage 乳熟期Milk stage 收获期 Harvest stage 3 4 5 3 4 5 3 4 5 3 4 5 2015 6.0 (D1) CK 27.9bc 20.9c 17.8c 50.4b 43.6bc 38.4b 60.1b 54.0b 48.2b 56.3b 50.2b 43.6b TR 42.6a 37.5a 27.1a 56.6a 52.9a 48.7a 65.1a 63.3a 58.5a 60.9a 57.8a 53.1a 7.5 (D2) CK 24.2cd 17.2d 14.1d 43.5c 39.6cd 35.5c 55.6c 50.0bc 43.5c 52.3d 45.9cd 38.9d TR 31.2b 29.0b 24.2a 48.1b 44.6b 38.7b 58.5b 53.1b 47.7b 54.8cd 49.3b 42.7bc 9.0 (D3) CK 21.8d 15.0d 13.0d 34.9e 31.5e 25.4d 42.2d 39.5d 35.4d 40.6e 36.5e 32.1e TR 29.7b 25.5b 21.0b 40.0d 37.1d 32.7c 53.3c 47.5c 43.7c 52.2d 45.5cd 40.8c 2016 6.0 (D1) CK 26.4c 18.8d 16.6d 48.5b 42.0b 36.5b 56.8b 49.9b 45.8b 54.4b 48.6b 40.5b TR 39.3a 36.2a 25.8a 53.4 a 51.2a 45.6a 63.3a 60.4a 56.1a 58.2a 55.3a 51.4a 7.5 (D2) CK 22.6d 16.0e 13.2e 41.3d 37.7c 33.4c 52.3c 47.4c 41.2d 49.0d 43.3d 36.5d TR 29.6b 26.7b 23.2b 46.9c 42.9b 35.5b 55.0b 51.3b 43.7bc 50.7c 46.0c 40.9b 9.0 (D3) CK 20.1e 14.3f 12.7e 33.5f 30.0e 23.6e 40.7d 37.7e 34.7e 37.7e 34.6e 30.4e TR 27.0c 23.5c 19.8c 37.6e 36.0d 30.8d 50.5c 44.8d 41.3cd 48.9d 42.5d 38.0c 变异来源 Source of variation 密度Plant density ** ** ** ** ** ** ** ** ** ** ** ** 年际 Year ** ** * ** * ** * ** ** ** ** ** EC ** ** ** ** ** ** ** ** ** ** ** ** 密度×EC Plant density× EC * ** NS NS NS ** NS * * ** * ** EC×年际 EC×Year NS NS NS NS NS NS NS NS NS NS NS NS 密度×年际 Plant density×Year NS NS NS NS NS NS NS NS NS NS NS NS 密度×EC×年际 Plant density× EC× Year NS NS NS NS NS NS NS NS NS NS NS NS