How to grow patchouli seed planting methods and matters needing attention

The application of patchouli in China is very early, probably because most areas of our country are inland, so there will be more application and understanding of plants, so they have a very systematic understanding of the use and efficacy of plants. With the development of time, patchouli, as a kind of rural weed, has gradually become the object of planting.

How to grow patchouli

Patchouli prefers high temperature and sunny environment, and grows poorly in the shade. The area with an annual average temperature of 19: 26 ℃ is more suitable for growth. When the temperature is higher than 35 ℃ or lower than 16 ℃, it grows slowly or stops. Like to grow in a humid, rainy environment, afraid of drought, require annual rainfall of more than 1600 milliliters. The requirements of the soil are not strict, the general soil can grow, but the soil layer is deep, fertile and loose sandy loam or loam is better. For fear of stagnant water, if you plant in low-lying land that is prone to stagnant water, the roots will rot and die. The life span of seeds is 2-4 years, so seeds can be sowed every other year. Light is needed for seed germination. The optimum temperature for germination is 18-22 ℃, and the germination days are 7-10 days.

Seed planting methods and matters needing attention of patchouli

1. Sowing: the seeds are mixed with fine sand or plant ash, spread evenly on the border surface, and gently pat the border surface with a thin plate, so that the seeds are in close contact with the border surface, and the soil thickness is 1cm. Strip sowing: along the border according to the row spacing 25~30cm to open a shallow ditch, ditch depth 1~1.5cm, pour through water, seeds mixed with fine sand evenly scattered into the ditch, covered with soil 1cm, slightly suppressed.

2. Sowing amount of seedlings: 2~4g/m2, the amount of seeds used in Honda is 500,800g per 667m2. Finally, the border is covered with thin film for heat preservation and moisturizing.

3. Planting: when the seedling height is 12: 15 cm and 4 leaves, according to the plant spacing 25cm, the row spacing is 40 m, the seedlings are planted with thin dung water in cloudy days, 6 ~ 7 000 plants are planted per 667m2, and the fixed root water is poured through after planting.

4. Seedling replenishment: after sowing, when the temperature was 13: 18 ℃ and the soil moisture was suitable, the seedlings emerged in 10-12 days. When the seedling height is 10 cm to 12 cm, the seedlings should be separated from each other to remove the weak and stay strong. Strip sowing can be divided into two rows according to the plant spacing of 10 cm to 12 cm and the seedlings are staggered. There were 3 or 4 strong seedlings in each hole.

5. timely planting: when the height of Huoxiang seedlings is 12cm 15cm and 4cm 6 true leaves, according to the plant spacing of 25cm and row spacing of 40cm, choose to irrigate thin dung water in cloudy days, planting 6 ~ 7000 plants per mu, and pour through the fixed root water after planting. If missing plants are found after survival, overcast days should be chosen to replenish seedlings.

6. Topdressing management: the first topdressing of patchouli was applied 1.5 kilograms of rarefied human and animal manure per square meter after loosening the soil with a seedling height of 3 cm, and then it was carried out when the seedling height was 7 cm 10 cm, 15 cm 20 cm and 25 cm 30 cm, respectively, and should be watered after fertilization. no more topdressing after ridge closure.

7. Drainage and drought resistance: patchouli likes micro-tide soil environment. If there is no rain in case of drought after sowing and transplanting, attention should be paid to timely watering (irrigation) to resist drought and protect seedlings. In rainy weather and after irrigation, ditch cleaning and drainage should be done in time to prevent stagnant water and cause rotten roots.

8. Timely harvest: pick tender stems and leaves, seedlings from April to June, or harvest in full bloom from July to August, cut off the ground on a sunny day and dry in the sun, Kang or shade, yielding 4500kg to 7500kg per hectare, preferably those with green stems and branches, dry leaves and strong aroma.

Prevention and control of common diseases and insect pests of patchouli

1. Ring disease. It happens from spring to autumn. Spray 200-fold solution of non-toxic high-fat membrane before the onset of the disease, spray 50% carbendazim 500-1000 times solution in the early stage of the disease, and remove the residual body at the end of autumn to reduce the source of infection.

2. Brown spot. It occurred in northeast China from July to August, and the control measures were the same as those of ring disease.

3. Spot blight. It occurred in Northeast China from June to August, and the control method was the same as that of ring disease.

4. Root rot. Remove stagnant water in time, remove and destroy diseased plants in time, and disinfect disease points with lime or irrigate disease points with 50% carbendazim 500 times solution.

5. Aphids. Spray with 40% dimethoate EC 1000ml 1500 times.

6. Red spider. 6Mel-the peak occurs when the weather is dry early in August, sprayed with 40% dimethoate EC 1500 Mel 2000 times.

7. Silver leaf moth. From May to October, the larvae bite on the leaves. Spray with 1000 times of 90% crystal trichlorfon.

Perennial Root Propagation of patchouli

The advantage of perennial root transplanting is that it is very easy to survive, and the persistent root can emerge around May of the following year. Use scissors close to the ground to cut off the stumps that have died in winter, and then pour a thin dung water, which is conducive to its growth. When the seedling height is about 9-15 cm, the seedlings can be dug up in rainy or cloudy days and transplant in the field with soil. Reasonable plant spacing was controlled by transplanting. Immediately after planting, pour a thin dung water, which is conducive to survival. The perennial root began to blossom from the end of June to the beginning of July, and flowered in the middle of July when it was sown in spring.

Most of the mass cultivation of patchouli uses the method of sowing, but there is more than one method of propagation of patchouli. The persistent root propagation and cutting propagation in this paper are very suitable for patchouli. Therefore, the method of planting patchouli can be adjusted according to our actual environmental conditions.