Cultivation techniques of planting Fangfeng and High yield

Fangfeng likes a warm and humid climate, resistant to drought, afraid of waterlogging, too humid is not good for growth, to loose, fertile, good drainage, deep sandy loam is the most suitable.

1. Soil preparation and fertilization

Fangfeng is a deep-rooted plant. Deep soil should be selected in cultivation, and sufficient base fertilizer should be applied during soil preparation, with high-quality ring fertilizer 3000Muth5000kg per mu, calcium superphosphate 50kg, potash fertilizer 15kg, deep ploughing more than 30cm, rake leveling and fine furrow.

2. Sowing method

Generally speaking, the seeds of Fangfeng can not be sown in the same year, so the seeds must be treated by accelerating germination. First, gently rub the seed on the ground, let the seed coat break slightly, then soak it in warm water of about 35 ℃ for 3 hours, remove it and put it into a basin with a little wet sand, place it in an environment of 20 ℃ and 25 ℃ to promote germination, and sow when the seed is white.

3. Sowing seeds at the right time

There are two seasons of sowing: spring sowing and autumn sowing, spring sowing in March-April and autumn sowing in September-October. The seedlings emerged early and evenly in autumn sowing, and emerged 1 week after sowing (20 ℃) and 2 weeks (15 Murray 17 ℃).

4. Planting specifications

In the whole border, the row spacing is 30cm, the depth is 1mm, the sowing rate is 2.50kg per mu, and the soil is covered with 1cm after sowing and slightly suppressed (trampled with feet). If possible, the grass can be covered to preserve soil moisture.

5. Rhizome propagation

In early spring, the ungerminated Fangfeng rhizome was dug out in the seed field left last year, and the root segment was cut according to the length of 4murmur5 cm, which can not only raise seedlings, but also be directly planted in the field, digging holes in each hole according to row spacing of 30 cm and plant spacing of 20 cm, planting a section of rhizome at each point, watering it once a week or so, and hoeing when the land is slightly dry, which is beneficial to seedling emergence.

6. Field management

6.1 the seedlings were fixed 1 month after emergence, and when the height of the seedlings was 10 Mel 15 cm, the seedlings were fixed according to the distance between 10 Mel and 15 cm.

6.2 weeding and soil cultivation found that weeds were loosened and weeded before June, but could not be weeded in the field after July. Cultivate the soil before the rainy season to prevent lodging. Cultivate the soil to protect the root strip before freezing, cover with a layer of manure after winter, and apply the dung into the ground in the next spring.

6.3 Fertilizer irrigation needs suitable moisture from sowing to seedling emergence. When the seedling height is more than 10 cm, the root goes deep into the ground, has strong drought resistance and is watered as little as possible. Pay attention to drainage in the rainy season to prevent stagnant water from rotting roots. If the base fertilizer is more and the quality is good, the plant growth is exuberant, the first year can not be topdressing fertilizer, the second year early spring return to green, mu compost or human feces and urine 1000 kg, superphosphate or compound fertilizer 25 kg, ditch application; can also be used only 20 kg diammonium sulfate, plus phosphate fertilizer.

6.4 bolting and direct seeding in the field generally does not bolt and blossom in that year, but from June to July in the following year, except for planting, those who are found to be bolting should be removed in time, because the rhizome will be woody and hollow after flowering, and the nutrient content is low, so it is difficult to be used as medicine.

7. Disease and pest control

Root rot: irrigate the roots of diseased plants with 5% lime water, spray with 1000 times of 50% acetaminophen solution; powdery mildew: spray Baume 0.20 limestone sulfur mixture of 0.30 degrees or 1000 times of 50% topiramine; yellow Phoenix butterfly: spray 80% dichlorvos, 1000 colors, 1500 times, once every 5 times for 7 days, spray 2 colors for 3 times or spray cyanobacteria for 3 times Fennel silkworm borer: spray with 1000 times of 90% trichlorfon or 80% dichlorvos in the early morning or evening; for serious underground pests, you can use 50% phoxim EC to mix seeds with 0.1% seed volume, or use dichlorvos EC mixed with a small amount of wheat bran to kill.

8. Harvesting and processing

Before germination in spring or in winter. When digging, open a ditch on one side of the border to prevent the root from being cut off, remove the soil after excavation, remove the fibrous root when the sun is semi-dry, then dry it to 90% dry, tie it into a small handful according to length, and then dry it to the whole dry.