Efficient planting technique of peppermint

Peppermint alias Su mint, South peppermint, for the Labiatae plant peppermint, with the whole grass medicine, with the evacuation of wind and heat, clear leader, regulating qi and relieving depression and other effects. Peppermint has strong adaptability and is planted in the area of 300m-1000 m above sea level, and its oil and menthol content is high. It likes warm and humid environment and the optimum temperature for growth is 20 ℃-30 ℃. It belongs to long sunshine plant. Sex likes plenty of sunshine, sufficient sunshine and dry weather are required in the budding and flowering stage, neutral soil, sandy loam, loam and humus soil with ph 6.5 and 7.5 can be planted. Peppermint likes fertilizer, especially nitrogen fertilizer, avoid continuous cropping. Flowering from July to October and fruiting from September to November. First, rhizome propagation. From late October to early November, on the flat border, the horizontal trench was made according to the row spacing of 25 cm-30 cm, with a depth of 10 cm, and then the rhizome was dug up from the seed field, and the white, sturdy and short internodes were cut into small segments of about 10 cm in length, and then planted into the ditch according to the plant spacing of 15 cm. After planting, apply thin dung water, cover fine soil, rake flat compaction, generally use white tender new rhizome about 100 kilograms per mu. Second, seedling propagation. The fields with good growth, unified varieties and no diseases and insect pests were selected as seed plots. Immediately after the autumn harvest, ploughing, weeding and topdressing. From April to May next year, when the seedling height was 15 cm, the seedlings were pulled and transplanted, and the transplanting site was dug according to the row spacing of 20 cm and the plant spacing of 15 cm, and 2 seedlings were planted in each hole. After planting, the soil was pressed, and then the roots were fixed with thin human and animal manure water. Transplanting should be carried out before "Qingming Festival", which can increase leaf yield and oil yield. Third, planting technology. Land selection, soil preparation and fertilization. It is suitable to choose loam or sandy loam with fertile soil, flat terrain, convenient drainage and irrigation, sufficient sunshine, no mint planting in 2-3 years, over-acid or over-alkaline soil, barren sand soil and land with insufficient sunlight, drought and waterlogging. Before planting, cultivate deeply and carefully, apply about 2500 kilograms of rotten barnyard manure, compost or soil manure per mu as base fertilizer, then make a high border with a width of 1.5m and a depth of 15cm, and open a drainage ditch with a width of 30cm-40cm.