ICS 65.020.20 CCS B 05 15 DB15/T 3445.4 2024 4 Technical code of practice for soybean-maize strip intercropping Part 4 Foot area of Yin Mountian 2024-05-31 2024-07-01 DB15/T 3445.4 2024 I GB/T 1.1 2020 1 DB15/T 3445 4 DB15/T 3445 1 2 3 4 5 6 SAM/TC 20 DB15/T 3445.4 2024 II 1 2 3 4 5 6 DB15/T 3445.4 2024 1 4 1 2 GB 4404.1 1 GB 4404.2 2 GB 5084 GB/T 8321 GB 15618 GB/T 15671 3 soybean-maize strip intercropping 4 10 2100 105 d 5 5.1.1 DB15/T 3445.4 2024 2 GB 15618 5.1.2 25 cm 15 cm 5.2.1 280 cm 5.2.2 GB 4404.2 GB 4404.1 5.2.3 35%1:75 1:100 6.25%1:200 1:300 GB/T 15671 6 4+4 40 cm 60 cm 70 cm 4.2 m 14 cm 18 cm 2 3 16 cm 14 cm 1 1 4+4 6+4 DB15/T 3445.4 2024 3 40 cm 60 cm 70 cm 5.2 m 14 cm 18 cm 2 3 16 cm 14 cm 2 2 6+4 7 10 cm 8 10 4 5 10 cm 10 12 5 6+3 cm 4 cm 3 cm 5 cm 8 48 h 10 m/667 m 20 m/667 m 9 N 2.5 kg/667 m 3 kg/667 m P2O5 4 kg/667 m 6 kg/667 m K2O 3 kg/667 m 5 kg/667 m 90%100 g/667 m 150 g/667 m+0.15 kg/667 m+DB15/T 3445.4 2024 4 20 mL/667 m 100 g/667 m 150 g/667 m+150 g/667 m 200 g/667 m 30 kg N 12 kg/667 m 15 kg/667 m P2O5 4 kg/667 m 6 kg/667 m K2O 6 kg/667 m 8 kg/667 m 40%1:2:1 60%3 4 2 3 20 m/667 m 30 m/667 m GB 5084 10 90%100 mL/667 m 125 mL/667 m+70%20 g/667 m 30 g/667 m 30 kg 3 5 4%60 mL/667 m+38%100 mL/667 m 30 kg 1 2 25%100 mL/667 m 120 mL/667 m+75%2 g/667 m 30 kg 5%25 g/667 m 50 g/667 m 30 kg 10.3.1 GB/T 8321()10.3.2 100 62.5 g/L 300 mL 400 mL 50%1000 40%1000 50%500 2%0.3%95%3500 50%75%500 800 30%2000 7 d 10 d 2 3 20%43%5000 10.3.3 40%500 mL/667 m 50 kg 4.5%1500 4.5%1500 2.5%2000 3 DB15/T 3445.4 2024 5 11 50%30%