How to manage growing mint?

How to manage growing mint? Please introduce in detail 1. Peppermint management method 1. Mint seedling preparation: after transplanting in early April, when the seedling height is 10 cm, replenish the seedling and keep the plant spacing at about 15 cm, that is, 20, 000 to 30, 000 seedlings per mu. 2. Weeding in middle ploughing: 3 times in mid ploughing from March to April. As the peppermint root system is concentrated in the soil layer of 15 cm, the underground rhizome is concentrated in the soil layer of 10 cm, so the ploughing should be shallow rather than deep. After the first harvest, hoe again and clear the drain. 3. Mint topdressing method: generally 4 times, the first time in February, 1000 kg of dung water per mu was applied to promote the growth of seedlings. The second time, when the seedling height was about 15 cm, 1500 kg of dung water or 20 kg of ammonium bicarbonate was applied per mu. The third time after the first mint harvest, 1500 kg of concentrated dung water and 50 kg of cake fertilizer were applied per mu to promote early growth after harvest so as to increase yield. The fourth time in early September, when the seedling height was 30 cm, 1000 kg of dung water was applied per mu. In addition to applying sufficient nitrogen fertilizer, it is also necessary to apply appropriate amount of phosphorus and potassium fertilizer. 4. Mint water management: high temperature, dryness and summer drought occurred from July to August, so it is necessary to irrigate and resist drought in time. In the rainy spring and summer plum rain season, drainage ditches should be dredged and stagnant water should be eliminated in time. 2. Control methods of peppermint diseases and insect pests 1. The harm and control methods of peppermint rust: the pathogen is a kind of basidiomycetes in fungi, which is harmful to leaves and stems. It is easy to occur when it is rainy or too dry from May to June. The orange-yellow and powdery summer spore pile appeared on the back of the leaf, and the dark brown and powdery winter spore pile occurred in the later stage. When the disease is serious, the leaves wither and fall off, resulting in the death of the whole plant. Prevention and cure method: spray sodium with 300 times of liquid enemy or spray with Bordeaux liquid of 200 Bordeaux. Stop spraying 20 days before harvest. 2. The harm and control methods of peppermint spot blight: also known as white star disease, the pathogen is a half-known fungus in fungi, harmful to leaves. From May to October, the leaf spot was small round and dark green, then gradually expanded into gray-dark brown, the center was gray-white, white star-shaped, upper black spots, gradually withered and fell off. Prevention and treatment methods: ① found that diseased leaves were removed and burned in time; at the initial stage of the onset of ②, sprayed with 200 Bordeaux solution or 65% Dysen zinc wettable powder. Stop spraying 20 days before harvest. 3. The harm of small land tiger and its control methods: it belongs to the family Lepidoptera, which harms leaves and buds. The leaves are killed by larvae, resulting in holes. Control method: spray with 800 times of 90% trichlorfon powder or 100 times of 50% fenitrothion. Stop taking medicine within 20 days before harvest. Third, peppermint harvesting and processing methods: 1, mint seed. In late April or late August, excellent seeds and plants were selected in the field and moved to the pre-prepared seed land according to the row spacing of 20 × 10 cm. After cultivation and digging in early winter, 7080 new white rhizomes could be obtained. The seed stem of 1 mu of reserved land can be used for about 6 mu of planting land. 2. Mint harvesting method: it is better to harvest twice a year. The first time is from late June to early July, no later than mid-July, otherwise the second harvest will be affected, and the second time will be carried out before flowering in early October. Harvesting should take place from 12:00 to 2 p.m. on a sunny day, when the leaves contain the highest amount of oil and brain. 3. Mint processing method: after harvest, spread out to dry for 2 days, tie it into small handfuls, hang it up to dry or dry in the sun. Turn frequently when basking in the sun to prevent rain and night dew, otherwise it is easy to become moldy and deteriorate. Home-made distillation equipment can be used for processing in the producing area, the peppermint stems and leaves are distilled into peppermint oil, and after cooling, they precipitate and crystallize. After separation and purification, menthol can be obtained. Click to get more mint planting technology click to get more medicine planting technology