椰子树叶片营养诊断技术规程DB46／T 451-2017.pdf

ICS 65.020.01 B 05 DB46 DB 46/T 4512017 Technical regulation for coconut leaf nutritional diagnosis 2017-12-20 2018-02-20 DB46/T 4512017 GB/T 1.1-2009 DB46/T 4512017 1 1 2 LY/T 1271 NY/T 1810 3 3.1 diagnosis standards for coconut leaf nutrition 3.2 diagnosis unit 3.3 leaflet(split leaves)3.4 New leaf 4 4.1 DB46/T 4512017 24.2 6 7 8 8 00 11:00 4.3“S”“V”“X”4.4 10 4.5 4.5.1 26 30 20 25 15 20 11 12 10 7 4.5.2 20 cm 30 cm 4.6 5 5.1 105 30 min 70 80 4 h 8 h 5.2 1 mm 6 6.1 LY/T 1271 6.2 LY/T 1271 7 DB46/T 4512017 3 1 8 8.1 8.2 a)b)c)0.92 2.25 0.10 0.29 0.81 1.23 Na 0.66 1.68 Ca 0.12 0.49 Mg 0.21 0.98 DB46/T 4512017 4 A A.1 A.1 hm2 0 5 6 10 11 15 15 1 2 3 4 5 6 7 8 9 DB46/T 4512017 5 B B.1 B.1 _