ICS 65.020.20B 23DB3201DB3201/T 1282008 Technical Regulation for Production of Purple Sweet potato DB3201/T 1282008 b GB/T 1.1i2000u 1 v GB/T 1.2i2002u 2 vb b b baaaabIDB3201/T 1282008 aaaaaabb b bbGB 4285 GB/T 8321 GB/T 18407.1-2001 b purple sweetpotato b spring sweetpotato5 b summer sweetpotato6 b4 GB/ T18407.12001 b aaa 1 a 18 b aabb b 150gj250g b 50% 500 50% 400 10minj12min 20j30b6 1.2mj1.3m 40cm baabb 25cmj30cm 4cmj5cm 2cmj3cm b 3 b b 20kg /m2j25k g /m2b 1.2mj1.3m 15cm b 10cm 2cmj3cm 30 2cmj3cm b b b 20kg /m2j25k g /m2b 15cm b 4 b ab 15kg/m2j20kg/ m2b 30j35 80%b 24j28b 70%j80%bDB3201/T 1282008 25cm 3dj4d b 25cmj30cm b 0.8m1.0m 0.35m 0.4mb 1500kg/667m2 6 kg 8kg 6kg 10 kg 12kgb 3cm 25cm b 4 5 6 b 2 j3 3 j4 b 3 j5 3 b 667m2 3000 /667m2j3500 /667m2 3500 /667m2j4000 /667m2b b 5d b b 2 a bDB3201/T 1282008 50dj60d 0.2% 7d 1 2 j3 100kgj120kg/667m2b GB 4285aGB 8321 Ab 150g b aaab a b ab %90% 667 50%500800 5 1000 10 50%200ml3%1000 g1500g1.8%1000 2.5%2000 50%100 ml 2 72%100 ml 23 国内外标准大全豆丁网国内外标准下载地址 http:/www.docin.com/kmust15