The latest course on Seedling raising techniques and methods of Ipomoea aquatica

Asparagus is a common vegetable in our life, it is suitable to grow in a warm and humid environment, is not cold-resistant, and will lead to the death of stems and leaves in case of frost, so it is less in the north. The breeding of asparagus affects its yield and quality. Let's take a look at the breeding techniques of asparagus with Xiaobian.

1. Seed selection

Asparagus can be propagated by seeds and cuttings, but many cuttings are used in production, generally using seed propagation. Seed reproduction must first select seeds, to choose those full particles, bright color, disease-free, moth-free seeds, so as to ensure the germination rate, the seed storage time can not be too long, and the storage method should be appropriate.

2. Soaking seeds to accelerate germination

The seed coat of hollow cabbage is relatively thick, if sowing directly, it may germinate slowly because the temperature is too low, and if long-term overcast and rainy weather occurs after sowing, it may also lead to seed rot, so it is necessary to accelerate germination before sowing. You can soak the seeds in warm water of about 30 degrees for a day, make them absorb enough water, and fish them out. Wrap it with wet cloth and put it into a budding box to promote germination, keep the constant temperature at about 30 degrees, and sow seeds when more than half of the seeds are white.

3. Sowing fish fry

There are many ways of sowing and raising seedlings of hollow cabbage, which can not only improve the seedling of nutrition bowl, but also raise seedlings in plate of substrate, which is more laborious and less used in production. 72-hole or 128-hole hole plates can be selected for seedling raising with substrate, and light substrates such as peat, vermiculite or perlite can be selected, which have the advantages of low specific gravity, water retention and air permeability. After mixing them with organic fertilizer at the ratio of 2:1, the substrate and hole plate are disinfected, and then the seeds can be sown. Sowing is to put the matrix into the hole plate, put 2-3 seeds in each hole after irrigation, cover with a layer of film to keep warm and moisturizing, and remove the film after the seedlings are unearthed.

4. Seedbed management

First of all, it is necessary to do a good job in temperature control, keep about 25 degrees during the day and above 10 degrees at night, and the matrix must be in a moist state at the seedling stage. When the seedlings grow to more than 5 cm, foliar fertilizer can be sprayed once, and 0.2% urea and potassium dihydrogen phosphate solution can promote the rapid growth of seedlings. When the seedlings grow to about 10-15 cm, they can be planted.

The above is the introduction of asparagus seedling technology, hope to help you, want to know more related knowledge, please pay attention to us.