How to select Sudan grass seeds? What are the methods of raising seedlings?

Sudan grass is an annual herb of Gramineae and sorghum, and it is also a very good forage grass. Its nutritional value is very low, palatability is good, all kinds of livestock like to eat, and it is also one of the high-yield and high-quality green words for fish. It generally blossoms and bears fruit from July to September. So how to choose the seed of Sudan grass? What are the methods of raising seedlings? Next, let's have a look with the editor.

First, how to select Sudan grass seeds?

Select the full, disease-free and insect-free seeds of Sudan grass, dry them for 1-2 days before sowing, and then soak the seeds with 0.2% potassium dihydrogen phosphate or warm water for 6-8 hours to break dormancy and improve seed germination. In addition, mixing seeds with trimethoprim can prevent the occurrence of rust.

Second, what are the seedling raising methods of Sudan grass?

1. Land consolidation

We need deep ploughing to plant Sudan grass, and we need to plough the land and apply some fertilizer to the soil the day before sowing, and wait until the next year to fertilize the soil again, and fine ploughing, these steps can not be omitted, because the growth of Sudan grass needs adequate fertilizer, and this is the guarantee that Sudan grass can grow into high-quality forage grass.

2. Sowing time

We must control the sowing time. The soil temperature suitable for Sudan grass germination is 12-14 degrees Celsius. Because of the vast territory of our country, the temperature of different regions will also be different, so when we sow seeds, we should not stick to the time. April-June is the sowing time that most areas can choose.

3. Sowing and raising seedlings

The sowing method is generally row sowing, and the sowing distance is controlled at 20cm; it can also be 3-5 grains per hole, 40cm spacing, and plant spacing 15-20cm.

In addition, in order to control the cost, we should also control the sowing amount of seeds. It is generally recommended that we sow 2.5~3kg per mu, sowing depth 3-5cm, clay should be shallow sowing, sand should be deep.

4. Post-broadcast management

When the seeds emerge, we should eradicate the weeds. In addition, we should carry out appropriate fertilization and watering according to the actual situation.

5. Harvest

When it grows to about 1 meter, we can cut it, and the stem is rich in sugar. If it is used to prepare silage, it should be harvested from heading to flowering. If it is used to prepare hay, we should wait until it blossoms to cut it. At this time, its stems and leaves are softer than corn and sorghum, and the stalks are thinner than them, so it is easy to prepare.

III. The main value of Sudan grass

1. Pasture

The grassland of Sudan can be grazed and fed by cattle, sheep, pigs, horses and other livestock without fear of swelling disease. Generally, the first grazing is at the early jointing stage, the second is at the booting stage, the third is at the heading stage, and the fourth is before or after the frost.

2. Green feeding

Sudan grass can be harvested and fed by stages as a high-quality green and succulent feed for horses, cattle, sheep, pigs, rabbits and fish. Generally, when the plant height is 50-70 cm, it can be harvested for the first time, and then every 20-30 days. If the young fresh grass of Sudan grass is fed to pigs, it can account for 1x3-1 of fresh grass, which can be beaten or crushed. Cattle should be fed with 30-40kg of fresh grass every day; sheep and rabbits can be fed whole or cut short; when feeding fish, the fresh grass can be crushed and fed, the effect is better.

3. Prepare hay

The tillering stage is long, the number of tillers is large, the growth is rapid, and the regeneration ability is good. It can be cut two to three times a year. The yield is high and stable, the grass quality is good, the nutrition is rich, and its protein content ranks first among the annual grasses.

The above is the introduction of Sudan grass, Sudan grass is a kind of green fodder, because of its low dry matter content, it can only be used as the raw material of formula feed. At present, Gaodan grass, which has the hybrid of Yajin sweet sorghum and Sudan grass, has more advantages than ordinary Sudan grass, mainly due to the increase of dry matter content and sugar content, as well as the palatability of feed.

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