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3 不同处理条件下玉米株高、穗位高、重心高度和节间长度的变化

Table 3 The change of plant height, ear height, culms gravity height and internodes length under different treatments

年际 Year 密度 Planting density (×104 plant/hm2) 处理 Treatment 株高 Plant height (cm) 穗位高 Ear height (cm) 穗位系数 Ear position coefficients 重心高度 Culm gravity height (cm) 1-6节间长度 Internodes length between one to six node (cm) 7节以上节间长度 Internodes length above seven (cm) 2015 6.0 (D1) CK 311.0c 110.2c 0.35b 77.5d 95.3bc 181.1f TR 306.2d 104.3e 0.34b 72.2e 85.4d 196.7c 7.5 (D2) CK 314.5b 116.6b 0.37a 86.3b 103.8a 187.2e TR 306.3d 106.2d 0.35b 79.8c 93.0c 202.5b 9.0 (D3) CK 325.8a 124.4a 0.38a 90.3a 109.5a 193.6d TR 317.0b 109.3e 0.32c 84.7b 96.4b 209.4a 2016 6.0 (D1) CK 276.7bc 112.1bc 0.37a 95.7c 83.6c 172.7e TR 272.7c 94.0d 0.35ab 87.0d 76.2e 183.2cd 7.5 (D2) CK 281.7b 118.3ab 0.38a 100.7b 88.8 b 179.9d TR 278.7bc 96.7cd 0.36ab 90.5d 78.0e 190.4b 9.0 (D3) CK 287.7a 124.0a 0.39a 106.0a 91.5a 186.6bc TR 284.7a 103.0ab 0.37a 93.7c 82.0d 198.1a 变异来源 Source of variation 密度 Planting density ** ** ** ** ** ** 年际 Year ** ** ** ** ** ** EC ** ** ** ** ** ** 密度×EC Plant density× EC NS NS NS NS NS NS EC×年际 EC×Year NS ** NS * NS NS 密度×年际 Plant density×Year NS NS NS NS NS NS 密度×EC×年际 Planting density×EC×Year NS NS NS NS NS NS