Peppermint seed price and planting method

Peppermint is a kind of aromatic crop with special economic value, also known as wild mint, night incense, Yindan grass and so on. It is a perennial herb of the family Labiatae, widely distributed in temperate areas of the northern hemisphere, and is widely cultivated in various parts of our country. Jiangsu and Anhui are traditional authentic producing areas, but the cultivation area is decreasing day by day. Let's take a look at the price and planting methods of mint seeds.

How much is the mint seed?

The market price of peppermint seeds is about 200 yuan per jin. Peppermint has strong adaptability to temperature, its rhizome can survive the winter, can withstand the low temperature of-15 ℃, and the most suitable temperature for growth is 25-30 ℃. Like the sun, long sunshine can promote the flowering of peppermint and is conducive to the accumulation of peppermint oil and menthol. The requirement of soil is not very strict, except for sand, over-viscosity, over-pH and low-lying soil with poor drainage, the general soil can be planted, sandy loam and alluvial soil are better, and the pH value is 6-7.5.

What kinds of mint do you have?

1. Purple stem purple vein: purple stem purple vein mint seedling stem is purple, the middle and lower part of the stem is purple or lavender, and the upper stem is cyan. Most varieties have low seed setting rate, weak branching ability and stress resistance, unstable volatile oil yield, but high menthol content in the oil.

2. Green stem mint: the base of the stem is purple, the upper part is green in the seedling stage, the base of the stem is lilac in the middle and later stage, and the middle and upper part is green. Most varieties have high seed setting rate, strong branching ability and stress resistance, and the yield of volatile oil is stable, but the quality of oil is not as good as that of purple stem type.

Planting method of peppermint

1. Land selection and preparation: mint is not strict with the soil and can be cultivated except for over-acid and over-alkali soil. Choose the scattered land with sufficient light on the edge of the pond, house, canal and so on under the conditions of drainage and irrigation, which is fertile and flat. Sand, lack of light, dry and easy to stagnant land is not easy to plant. Land that has been planted with mint can not be replanted until it has been fallow for about 3 years. Turn the soil deeply, apply rotten compost, soil miscellaneous fertilizer, calcium superphosphate and bone meal as base fertilizer, 37500 to 45000 kg per hectare, rake fine, shallow hoe once, turn the fertilizer into the soil, crush the soil, rake flat to make the bed 200 cm wide.

2. Seedling propagation

① rhizome propagation: the seed roots were cultivated in late April or late August. After the aboveground stems and leaves were harvested in early winter, the rhizomes were left in place as seed plants.

② ramet propagation: peppermint seedlings about 15 cm high, should be between seedlings, supplement seedlings, at this time can be used between the seedlings of transplanting.

③ cuttage propagation: from May to June, the aboveground stem branches were cut into 10 cm long cuttings for cuttage, and then transplanted to the field after rooting and sprouting.

3. Transplanting method: mint was transplanted before germination in the early spring of the second year, early planting and early sprouting, long growth period and high yield. When planting, dig up the rhizome, select the sturdy, short internode and disease-free rhizome as the seed root, cut it into a small section 7 to 10 centimeters long, and then cut a trench 10 centimeters deep on the finished border surface according to the row spacing of 25 centimeters. The seed root is placed obliquely in the ditch to cover the fine soil, step on the soil and water according to the plant distance of 10 cm.

4. Field management

① check seedling replanting: after the basic whole seedling in the field, the seedling should be checked in time, and the missing seedling or sparse seedling should be replanted.

② intermediate tillage weeding: after the whole seedling, inter-row ploughing weeding, artificial weeding among plants, in order to preserve soil moisture, increase soil temperature, eliminate weeds and promote seedling growth. Ploughing and weeding for 2 or 3 times before closing. Remove weeds from the field before harvest to prevent the smell of other weeds from affecting the quality of peppermint oil.

③ peeling and topping: when the plant grows vigorously in May, the terminal buds should be removed in time to promote the growth of lateral branches, stems and leaves, which is beneficial to yield increase.

④ topdressing in time: when the seedling height is 10cm to 15cm, apply 10kg urea per mu, spray 5ml spray Shibao + 150g potassium dihydrogen phosphate + 150g urea twice.

⑤ scientific watering: peppermint needs more water in the early and middle stages, especially in the early growth stage, the root system has not yet been formed and needs more water, generally watering one water for about 15 days, and watering 4 times for 5 times from seedling emergence to harvest. After sealing, it should be irrigated gently to avoid excessive growth of stems and leaves, lodging, resulting in the shedding of the lower leaves and reducing the yield. The water will be cut off 20-25 days before harvest.

5. Disease and pest control

① black shank disease: occurs at the seedling stage and can be sprayed with 70% chlorothalonil or 40% carbendazim 100g 150g with water during the onset period.

② peppermint rust: easy to occur in May to July, with 25% trimethoprim 1000-1500 times liquid blade spray.

③ spot blight: it occurs from May to October. 65% of Dysen zinc is sprayed at the initial stage of the disease, which can be controlled once a week.

④ bridge worms: the damage period is around mid-June and late August, and the general population density is up to 10 heads per square meter. the enemy can kill 1520 milliliters per mu, spray it twice, or spray 1000 times with 80% dichlorvos.