The latest course of Sorghum Seedling raising techniques and methods

Sorghum is one of the most important grain crops in China. It is planted all over the country. The yield and quality of sorghum are determined by the strength of sorghum seedlings. It also determines the economic benefits of farmers. So how can we cultivate sorghum seedlings? Let's take a look at sorghum seedling technology.

1. Select improved varieties

To cultivate strong seedlings, first of all, we should choose improved varieties, according to the local planting environment, soil and temperature to choose, for example, in the lower altitude areas, we should choose varieties with low plants, high yield in the first season and strong regeneration ability, such as red cherokee rose and green shell. If you do not double harvest, do not leave regeneration, you can also choose strong resistance, and used to make wine is blind change red rose fruit, green shell foreign varieties.

2. Selection of nursery grounds

Sorghum has developed roots and strong adaptability to soil, so it has low requirements for soil and can tolerate saline-alkali and barren soil. However, in order to cultivate strong seedlings, the soil of the nursery land should be sandy loam with loose soil, deep soil layer and rich organic matter, and the seedlings are sensitive to saline-alkali, so it is not suitable to raise seedlings in saline-alkali land. The acidic soil should be planted after proper improvement.

3. Seed treatment

Before sowing, seeds should be screened first, small seeds, shriveled seeds and diseased seeds should be eliminated, large seeds and full seeds should be selected as production seeds, and the selected seeds should be exposed to sunlight for 2-3 days in a sunny day to improve their germination rate. Chemical seed dressing before sowing to control diseases, deficiencies and underground pests.

4. Timely sowing

Timely sowing is the premise of improving seedling germination, seedling uniformity and strong seedling. Sorghum planting is not resistant to low temperature when it sprouts. If sowing too early, it will lead to germination. It is extremely susceptible to disease infestation, affecting yield, and sowing too late will affect the growth period. When sowing, soil moisture content is 20%, late-maturing varieties are sown early and early-maturing varieties are sown late. We should sow seeds reasonably and control the density. Generally, the row spacing of plants is about 15×20cm, the best sowing depth is 3- 5 cm, and the soil covering is 2- 3 cm.

5. Seedling management

After sowing, it is necessary to cover the seedlings with plastic film for heat preservation. When the seedlings grow to 3-4 leaves, they are thinned once. When 5-6 true leaves are planted, the seedlings are fixed. When the seedlings are fixed, strong seedlings, weak seedlings and miscellaneous plants should be kept. In the seedling stage, 2-3 times of intertillage should be carried out, one time at the time of seedling determination, the first time after 10-15 days of seedling determination, and the third time before jointing stage. The intertillage can be combined with weeding and topdressing to make the seedlings grow strong. Sorghum in the seedling stage of the water requirements of the whole growth period of 10%, so in this period to pay attention to the changes in water, not too much too little.

The above is sorghum seedling technology, hope to help you, want to know more sorghum planting knowledge, please pay attention to us.