Choose deep, loose and fertile sandy soil. Dig 30 ~ 50 cm deep in winter, let it weather for 2 ~ 3 months, and then rake it flat in the following spring for border tillage.
2. Breeding method
Sow from March to April. Soak the seeds in clean water at 30-35℃ for 24 hours, take them out to dry the surface moisture, then sow them, dig shallow nests according to the row spacing of 50-60 cm, sow 4-5 seeds in each nest, then apply human and animal manure, and finally cover them with fine soil with a thickness of 3-4 cm.
3. Layered propagation
When it grows luxuriantly in summer, select robust branches and bury Pueraria lobata in the soil by wave or continuous layering method to make it take root. After rooting, lightly apply human and animal manure, weed frequently, cut into individual plants before germination at the end of early spring of the following year, dig up and plant. Before planting, holes were drilled according to the row spacing and plant spacing of 50 cm, with a diameter of 27 cm and a depth of 20 cm. Fill the compost and cover it with a thin layer of soil, with 1 ~ 2 plants per hole. After planting, these holes are carefully filled and compacted.
4. Cutting
Before germination in early spring, kudzu vine with short nodes and growth of 1 ~ 2 years was selected, and it was cut every 2 ~ 3 nodes, and 2 ~ 3 pieces were cut at each point. It is best to bury the cuttings in the annular or semi-annular hole with a depth of 10 ~ 15 cm, cover it tightly, and then cover it with a layer of loose soil.
5. Root propagation
When digging in winter, cut off the roots about 10 cm long and plant them directly.
6. Tian Tuan management
After emergence, thinning seedlings is needed, and 1 ~ 2 strong seedlings are left in each hole; When the height of seedlings is 17 cm, columns or scaffolding should be set to facilitate the extension of vines; When the seedling height is about 170 cm, the back of the neck bud should be removed to promote branching. Weed 2 ~ 3 times a year in intertillage, and topdressing after each intertillage, with phosphorus, potassium fertilizer and manure topdressing having the best effect.