Planting techniques of raw land

Rehmannia glutinosa, Rehmannia glutinosa, which is the root of Scrophulariaceae, is a perennial herb and a traditional Chinese medicine. It has the effects of clearing away heat and cooling blood, tonifying yin and promoting fluid, hemostasis, anticoagulant, treating fever, Yin injury, sore throat and other diseases. there is a great market demand, which is very popular at home and abroad, so many people grow it to get rich. So how should it be planted? Let's take a look.

1. Land selection and preparation

The raw land has a very strong adaptability, wild multi-growing sandy land and barren slopes with good drainage. It likes the environment with sufficient light and is suitable for planting in loose and fertile soil. If the soil is sticky or hard, it will affect its root tuber growth and yield. If the soil drainage is not good, it is easy to accumulate water, it will lead to root rot, in addition and continuous cropping. It is best to rotate with sorghum, vegetables, cotton and other crops for 3-4 years. When planting, turn the soil deep into 30cm, turn it deeply with fertilizer, and rake flat to make the bed.

2. Seed selection and planting

The selection of seedlings for sowing should be strictly regulated, and those with disease-free and strong growth should be selected. After seed selection, the seedlings should be folded into small segments about the size of 5cm and hung for 1-2 hours, so that the wounds can be healed and sown. Sowing is reasonable and close planting, generally about 100kg of seeds per mu, covering soil 5-7cm after sowing and watering. In low temperature areas, the ground temperature can be increased by covering the ground. As long as the temperature and water are suitable, seedlings can generally emerge in 25-30 days.

3. Fertilizer and water management

When fertilizing raw land, more phosphorus and potassium fertilizer should be applied, and sufficient base fertilizer is also extremely important for yield. in order to make the seedlings grow fast, it is necessary to top fertilize at the same time, then 15 kilograms of urea per mu can be applied, which can be washed in dissolved water. it can also be watered immediately after fertilization to speed up fertility absorption, and in the middle of growth, that is, in July, when topdressing phosphate fertilizer per mu is 10-20 kg. In the growth of the land, we should frequently water and keep the soil moist, but in the later stage of growth, when the tuber grows, it is very easy to cause rotten roots because of stagnant water, so watering should be based on the principle of no drought, no watering at noon and no watering at noon.

4. Field management

When the seedlings grow above 10cm, one plant should be left in each hole. If the seedlings are missing, the seedlings should be replenished, and the seedlings should be carried out in cloudy days, and it is best to transplant them with soil. In the early stage of plant growth, the seedling is too small, and the root system is relatively shallow, so as not to affect the seedling growth, weeding should be shallow hoe, can also be pulled out by hand, so as not to damage the root system, and if planted in a large area, herbicides are recommended. When growing, in addition to the main root, there will also grow some slender underground stems, called bark roots, which will damage a lot of nutrients of the plant and should be removed in time.

The above is the planting technology of raw land, hope to help you, want to know more about the planting of medicinal materials, please pay attention to us.