ICS 65.020.20 B 05 :55974-2017 DB46 DB46/T 428—2017 2017-09-05 2017-12-05 DB46/T 428—2017 GB/T 1.1-2009 1 DB46/T 428—2017 1 Bougainvillea spp. 2 LYJ 128 LY/T 1000 LY/T 1970 NY/T 5010 DB46/T 429 3 LYJ 128 NY/T 5010 4 4.1 4.2 4.3 4.4 2.0 m 2.5 m 1.2 m 5 m 6 m 50% 4.5 2 DB46/T 428—2017 cm 15 cm 20 cm 3 cm 5 cm 1 cm , 40 cm 50 cm 80 cm 100 5.5 7.0 EC 3 cm 5 5.1 5.2 6 6.1 LY/T 1970 pH 0.65 ms/cm 6.2 1:1:1 3:1:1 1:1 6.3 40% 5d 10 L 200 0.1% 50% 150 3d 6L 7 6 cm×9 cm 10 cm ×15 cm 54 cm× 28 cm 18 128 LY/T 1000 100 cm 200 cm 8 8.1 3 DB46/T 428—2017 8.2 1 5 3 5 1 3 60 40 60 20 40 1 10 20 8.3 a) 300 mg/L b) c) 500 mg/L 400 mg/L 3 h 1 h 9 9.1 11 9.2 1d 2d 9.3 1/3 1/4 6 cm 10 cm 3 cm 5 cm, 1/2 1/3 9.4 1 cm cm 2 9.3 9.5 4 DB46/T 428—2017 9.5.1 50% 9.5.2 20 30 30 20 9.5.3 85% 95% 75% 90% 9.5.4 80% 90% 9.5.5 9.5.6 DB46/T 429 10 10.1 2 cm 3 cm 10.2 11 A ________________________ 5