Planting techniques and matters needing attention of Rehmannia glutinosa

Dihuang is a traditional Chinese medicine, the general people in the vegetable market is not able to buy, then some people think it is inconvenient to buy, can you plant it at home, of course, but do you know how to plant Dihuang? In order to answer everyone's doubts, Xiao Bian specially collected relevant information about rehmannia root and organized it into the following materials for your reference and reading. Let's have a look together.

How to grow rehmannia

1. Selection of land for planting rehmannia

Select a flat terrain, easy to irrigation and drainage, deep soil layer, loose soil, rich in organic matter, good water and fertilizer conservation sandy loam is appropriate, rotation period of ten years.

2. Variety selection of rehmannia

Beijing No. 1, Beijing No. 3, Jin Jiu.

III. Land consolidation

In conjunction with soil preparation, apply 5 fully fertilized coarse and mixed fertilizers per acre to control underground pests, nematodes, blight virus, stem rot and other pests. After sowing, soil disinfection treatment is carried out along the sowing belt with mixed solution of agricultural resistant 120 + Guangling to prevent diseases such as blight.

IV. Sowing of rehmannia

1. Soil disinfection of the ground: mulch in mid-April to ensure complete seeding of seedlings.

2. Suitable planting time of rehmannia root: plastic film covering shall be adopted in the middle of April to ensure that the whole seedling shall be sown at one time.

3. Seed soaking of rehmannia seedlings: 25% make Baike 1500× or Junkeduke 250× or OS-Sterling 250 times solution soak for 30 minutes, dry and wait for sowing.

4, rehmannia weeding method: soil closed chemical weeding: from the end of March to the beginning of April, seedlings before sowing with 200 ml of cloth and 45-50 kg of water for soil closed treatment.

Cultivation techniques and precautions of rehmannia

1. Dihuang planting technology

1. Environmental requirements

Dihuang is a high-light plant and should not be planted near the edge of forests or intercropped with tall crops. The whole growth period needs plenty of sunshine, sexual love dry, afraid of ponding, can be cold. Otherwise, the disease is serious. Dihuang has "three fears", that is, fear of drought, fear of waterlogging and fear of pests and diseases. When the soil temperature is 11~13℃, the germination takes 30~45 days, and 25~28℃ is the most suitable for germination. If the soil moisture is suitable in this temperature range, the germination will occur one week after planting, and the rhizome will emerge 15~20 days later.

2. Soil requirements

The growth of rehmannia has unique requirements for soil and fertilizer, so it is advisable to choose sandy loam with deep soil layer, loose fertility and good drainage. pH requirements neutral or slightly alkaline, organic matter content higher plots best. Heavy soil viscosity, waterlogging, hidden plots can not be cultivated. Special attention should be paid to the fact that rehmannia should not be cropped continuously, which is also a key measure to be paid attention to in land selection. When cultivating rehmannia root, gramineous crops should be selected as the first crop, rather than land planted with cotton, sesame, beans, melons, etc., for controlling underground pests. Combined with soil preparation, 2000kg of decomposed compost, 25kg of calcium superphosphate and 50kg of compound fertilizer are applied as base fertilizer for each mu, and then deeply ploughed for more than 25cm. Then, leveling and harrowing are carried out for fine cultivation. Generally, the width of the bed is 1.3~ 2m. At the same time, 1.5~ 2kg of 50% thiram +0.8~ 1kg of 1.8% abamectin can be mixed with 30~ 40kg of fine sand for making poison, sowing and ploughing (harrowing), nematodes, blight, stem rot and other pests.

3. Water demand

In the early stages of rehmannia growth, soil moisture requirements are low, about 10-20%. The middle and late growth period is also the root swelling period, so the soil should be kept moist, but no ponding. Because its root system is few, water absorption ability is poor, a little drought is easy to wither; soil moisture is too much, fleshy rhizome is easy to rot, so proper irrigation is needed.

4. Seedling planting

(1) Nursery. Generally speaking, cultivated rehmannia has roots as propagation material, and production is called "planting". The "seed" of rehmannia root generally selects the "reverse planting" and "seed" cultivated in July to August of the previous year, because when "reverse planting" and "seed" are used as seeds, rehmannia root has high yield, good quality and can prevent variety degradation. The concrete method is as follows: in July to August, in the improved rehmannia field planted in spring of that year, the rhizome with strong growth and no disease and insect pests is selected, the short nodes of 4 - 5cm are dug up and folded, after being slightly air-dried, the roots are planted into a field with sufficient base fertilizer according to the row spacing of 15 - 20cm and the plant spacing of about 10cm, weeding is properly carried out, topdressing is carried out, drainage is paid attention to after rain, and in the second year of spring, it is planted and excavated.

2) Planting. Each acre requires 40 to 60 kilograms of "planting." When the average temperature of the day is 18 to 21°C, 40~60 kg of "seeds" are required per mu. When planting, holes 3 cm deep are dug according to row spacing of 15~20 cm and plant spacing of 15~18 cm. Each hole is planted with 1~2 sections of seed stems covered with soil 3~4 cm. After compaction, water is poured, and then covered with film (covering film can improve ground temperature and preserve moisture at the same time). Planting rehmannia is usually the best.

II. Precautions for rehmannia cultivation

Make sure the seedlings are full 0.71776. When digging, open a 35 cm deep groove at the end of the crucible, process the organic rehmannia, and process it into rehmannia by using a special oven, that is, into commodities. Organic yellow leaves, flowers, rhizomes can be used as medicine. Yellow leaves in the late growth of rehmannia, select healthy, disease-free plants, appropriate removal of some leaves, shade drying can be. Organic yellow leaf treatment acne and hands, tinea pedis, flowers have thirst and treatment of kidney deficiency, lumbago effect. Therefore, harvesting should be carried out at an appropriate time. The harvest of organic yellow flowers should be in flowering, choose sunny days, combine with bud picking operation to collect flowers and buds, carefully pick roots and dry in shade.

Method for picking rehmannia root

Cut the stems and leaves of the ground with a shovel or sickle. Be careful not to cut too deep to avoid damaging the roots. After the ground part is cut off, use a rake to hold the cut stems and leaves aside and expose them to the ground for easy harvesting of rhizomes. Use a shovel or pick to dig at one end of the ridge, and the depth of the ditch is about 35 cm. Digging depth to not damage the roots as well, organic yellow easy to break, so excavation must be careful. The picking process should also minimize root damage. The yield per mu can reach 2000 ~ 2500 kg.

Read the above information, do not know if there are some people to dispel the idea of planting it? In fact, this kind of planting is very demanding. Without professional knowledge and technical equipment, it is difficult to plant successfully. Therefore, everyone should go to the store to buy it honestly. It will not be particularly expensive.