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

Alfalfa, also known as alfalfa, alfalfa, etc., leguminous alfalfa perennial herbs. Due to its high protein content, calcium, phosphorus and multivitamin content are also relatively rich characteristics, known as the "king of grass" reputation in the breeding community. It is cultivated in China, and now it is cultivated in all countries of the world. It is an excellent forage plant, which can be used as green manure or medicine. How do you select alfalfa seeds? What are the breeding methods? Let's take a look at it together with Xiaobian.

How to select alfalfa seeds?

The seeds of alfalfa are small, ovate, generally 1-2.5 mm long, smooth, yellow or brown. When planting alfalfa, be sure to choose plump, mold-free seeds, such as Algonquin or introduced stress-resistant, high-yield varieties.

Alfalfa early growth rate is particularly slow, seedlings must be staggered weeds rampant season sowing, intensive cultivation can be conducive to alfalfa seed germination and neat emergence rate.

2. What are the breeding methods of alfalfa?

1, planting soil preparation

The seeds of alfalfa are small and grow slowly at seedling stage. Before sowing, fine soil preparation is required. Weeds in the field need to be completely removed. Deep ploughing and fine harrowing are required to make the ground flat, the soil broken and weedless. Finally, sufficient base fertilizer is applied to the ploughed field. Organic fertilizer is selected as the base fertilizer, and it must be decomposed organic fertilizer. When planting alfalfa grass, be sure to choose close to water, loose, fertile acid soil to plant, can also choose to plant with sand.

2. Sowing time

Divided into spring sowing, autumn sowing. Spring sowing in Wenquan County is generally in late March or early May, and the ground temperature is stable above 5℃. Autumn sowing is generally in late August and early September, so that alfalfa has about 60 days of growth time before winter comes. After sowing in autumn, soil moisture is good, weed harm is light, emergence rate and survival rate are high, which is an ideal sowing time.

3. Sowing seedlings

The seeds sown should be washed, screened and dried to make the purity of the seeds reach 90%. Before sowing, bacterial fertilizers such as rhizobia fertilizer and seeds can be fully stirred. Generally, one kilogram of rhizobia can be mixed with ten kilograms of seeds, which can improve the yield. When sowing, we should ensure that the temperature can be within 25 degrees Celsius, and sufficient water is needed, but there should be no accumulated water in the field.

4. Seedling management

First of all, check seedlings. If dead seedlings or fallen seedlings are found, they should be supplemented or assisted in time, and watering and fertilizing seedlings should be carried out. The growth of alfalfa grass needs sufficient water, but there can be no accumulated water in the field. If there is accumulated water, it must be discharged in time. After the alfalfa is mature, it can be harvested, but after each harvest, we must remember to fertilize and weed, which can promote the growth of alfalfa branches and leaves. Its regeneration ability is strong, and it can be cut two to five times a year, but most places should be cut three times a year.

The above is the introduction of alfalfa, alfalfa is a perennial forage variety, because the seed is small, seedling growth speed is slow, planting should try to avoid the season of wild weeds, apply sufficient base fertilizer, especially farm manure is the best, pay attention to rainy season waterlogging, harvest in time at the beginning of flowering, prevent lodging phenomenon.

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