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4 不同处理水平下玉米茎秆抗折力的变化

Table 4 The change of snapping resistance of maize basal culm under different treatments (N·mm-2)

年际 Year 密度 Planting 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 358.7bc 250.9b 244.7ab 500.9b 350.8b 275.8b 648.1b 605.7b 431.7b 523.4b 468.9b 403.3b TR 542.9a 384.6a 278.2a 639.2a 421.3a 388.0a 779.2a 670.1a 589.4a 634.6a 568.9a 521.6a 7.5 (D2) CK 270.9d 244.3bc 164.1cd 366.0c 286.5c 193.6d 555.8c 479.6d 381.2c 419.7d 309.9d 251.2e TR 385.0b 288.6b 222.5b 538.5ab 329.1b 290.3b 627.7b 539.8c 458.1b 489.7c 386.6c 348.9c 9.0 (D3) CK 247.2d 189.9c 122.6d 326.9c 204.9d 176.5d 436.7d 403.5e 281.1d 333.4e 287.7e 204.6f TR 304.8cd 236.1bc 170.0c 487.5b 268.4c 234.6c 526.2c 495.0d 381.7c 402.3d 312.3d 283.6d 2016 6.0 (D1) CK 330.5c 290.9b 231.2b 505.3b 401.4b 374.9b 654.8b 522.6c 477.0b 546.5b 365.5c 302.4c TR 527.4a 343.4a 253.3a 619.9a 510.6a 437.8a 744.1a 606.4a 513.2a 615.4a 470.6a 380.6a 7.5 (D2) CK 255.2f 232.5d 148.2d 362.5d 280.1d 294.9d 568.9d 445.2e 362.9e 504.1d 332.5d 267.1d TR 349.2 b 268.5c 208.5c 458.8c 350.3c 238.9c 632.3c 535.2b 422.7c 534.4c 399.3b 318.5b 9.0 (D3) CK 202.9e 176.0e 109.7e 276.5f 217.3f 176.1f 467.9f 367.0f 272.4f 396.8f 238.2f 192.2e TR 297.0d 223.2d 148.5d 302.1e 255.4e 194.4e 587.5e 468.4d 391.0d 452.3e 297.7e 274.7d 变异来源 Source of variation 密度 Plant density ** ** ** ** ** ** ** ** ** ** ** ** 年际 Year * NS * ** ** ** NS ** * ** ** ** EC ** ** ** ** ** ** ** ** ** ** ** ** 密度×EC Plant density×EC * NS NS NS * * NS NS NS ** ** * EC×年际 EC×Year NS NS NS NS NS ** NS NS * ** NS ** 密度×年际 Plant density× Year NS NS NS NS NS ** NS NS NS ** NS ** 密度×EC×年际 Plant density× EC× Year NS NS NS NS * ** NS NS ** * ** **