How to choose the seeds of Zhonglou? What are the methods of raising seedlings?

Rhizoma thunbergii, also known as seven leaves and one flower, belongs to Liliaceae. With the development of its value, its medicinal value is getting more and more attention, and the market demand is further increasing. However, due to the scarcity of wild resources, more and more farmers are planting heavy buildings. So how to choose the seeds of heavy building? What are the methods of raising seedlings? Next, let's have a look with the editor.

First, how to select the seeds of Zhonglou?

The seeds of Rhizoma thunbergii should be selected, which are full, mature and free of disease, mildew and damage, mixed with clean fine sand with 2 ∶ 1, scrubbed and washed, soaked in 500 times carbendazim for 1 hour, buried in wet sand, treated for 4 months after 20 ℃ treatment, and sowed after rooting, paying attention to moisturizing during this period.

Chonglou seed, like a giant panda, is post-mature, that is to say, the shell of Chonglou seed explodes naturally, and the seed red is attractive, but in fact it is not really mature, in fact, its seed germ has not yet been formed. it still needs to mature again in the later stage to complete the soundness of the germ. As a result, it takes one spring and one winter for the seeds to emerge after they go to the ground.

Based on the above situation, it takes two years for the seeds to go to the ground, which leads to a lot of problems, such as the seeds do not sprout for too long, the seeds do not sprout when there is not enough water, and the seeds rot when they are not sterilized. there are a series of problems, such as seed decay, too many bacteria in the field, and so on.

Second, what are the breeding methods of Chonglou?

1. Selection of nursery sites.

The heavy building seed bed should choose the open land or sloping land with high terrain, good drainage, soil rich in organic matter and good shade (20%), and the dry land should build 3-4 layers of shade net. Choose a sunny day, ploughing the fields and leveling the beds. Border width 120 cm, ditch width 30 cm, ditch depth 25 cm, ditch to smooth, conducive to drainage.

2. Sowing and raising seedlings

The treated seeds can be sown on demand, strip sown or dispersed. When sown in humus soil and fine sand (2 ∶ 1), the seeds should be covered with 1.5 cm thin soil layer and covered with loose hairs to preserve moisture, which is not only conducive to seedling emergence, but also conducive to shelling cotyledons to ensure seedling emergence rate.

During this period, it is necessary to keep the seedbed moist and shady, and avoid soil hardening, dryness and excessive sunshine. The seedlings usually emerge in 3-4 months.

3. Transplanting

The seed seedlings were transplanted 3 years after emergence, and the row spacing was 10 × 20 cm. The cuttings with apical buds were planted according to the row spacing of 10 × 20 cm, and those without terminal buds were dug out when the adventitious buds had been formed in the following winter, and planted according to the row spacing of 20 × 30 cm. After transplanting, cover with loose hair or humus to moisturize and maintain a shady environment. The transplanting time should be in winter, after the seedling of the aboveground stem, when the rhizome is dormant, and pay attention to protect the terminal bud and fibrous root from damage in the process of transplanting.

At present, there are basically two ways of raising seedlings in heavy buildings, one is traditional breeding, that is, seeds are naturally scattered on the ground, a very small number of seedlings emerge in the first year, or even no seedlings, and then seedlings begin to emerge in the second year. Another way is artificial intervention to promote germination, breaking the natural law of heavy building seeds to make its early emergence, artificial germination is now a variety of, there are sand hidden primitive germination, useful artificial hormone germination, a variety of.

The above is the introduction of heavy buildings. Friends who want to plant heavy buildings must understand the physiological habits of heavy buildings. In the process of raising seedlings in heavy buildings, it is often due to unreasonable nutrition collocation and management, and unscientific ways of breaking dormancy, which leads to the destruction of the growth of heavy buildings, and then affects the yield and quality of heavy buildings.

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