How to grow sorghum for high yields? Detailed explanation of key planting techniques

Sorghum is one of China's ancient crops, and it has a wide range of uses. According to different uses, it can be divided into grain sorghum, sugar sorghum and forage sorghum, with high economic value and planting value. But how to achieve high and quality yields when planting is a question that directly relates to farmers' income. Below, Qinnong Net brings you the high-yield planting techniques for sorghum.

1. Reasonable crop rotation

Crop rotation is one of the important measures for achieving high sorghum yields. Sorghum should not be planted continuously; continuous cropping not only greatly reduces its yield, but also makes pests and diseases more likely to occur, and disease outbreaks are more serious. The sorghum plant is relatively tall, its root system is well developed, and it has a strong ability to absorb water and nutrients, so reasonable crop rotation is best, and the previous crop is best being a legume crop.

2. Land preparation and fertilization

Before planting, deeply plow the soil. This serves to use the sun to whiten and sterilize the soil, and secondly to loosen the soil so that it remains in a loose state. When preparing the land, pay attention to uniformity, without missing any spots or plowing twice. After plowing and before planting, apply sufficient base fertilizer to the soil so that the seedlings can grow quickly. When fertilizing, mix the fertilizer and soil evenly.

3. Seed treatment

In order to achieve the goal of high yield, when selecting seeds, combine them with the local planting environment and choose varieties with strong drought resistance, lodging resistance and disease resistance. To ensure the seed germination rate, select plump, large grains and remove shriveled, small ones, then place them in the sun to dry for 2-3 days. This can kill bacteria on the seed coat, giving a high germination rate and uniform sprouting. Then use warm water to soak the seeds and promote germination. After soaking the seeds in warm water for 12 hours, wrap them in a wet gauze and place them in a greenhouse to promote germination, taking them out once a day to rinse with clean water. When the seeds show sprout tips, they can be sown.

4. Timely sowing

Sorghum has different temperature requirements at each growth stage. For example, the minimum temperature for germination is 6-7 degrees, while the temperature for emergence is 20-25 degrees, so the sowing time must be controlled well. Generally, missing the best sowing time leads to poor plant growth, thereby affecting yield. The best sowing time is generally in early May. Drilling or dibbling can be used. Sowing should be uniform, and after sowing, cover with soil and press down. When sowing, pay attention to reasonable close planting and control the plant and row spacing.

5. Field management

Field management is divided into early, middle and late stages. The early stage is mainly seedling management, promoting the growth and development of the seedling root system to achieve the goal of strong seedlings. When sorghum seedlings grow 2-3 true leaves after emergence, pull out the weak, diseased and small seedlings, leaving the robust sorghum seedlings. The middle stage mainly promotes plant growth, strengthens fertilizer and water management, and carries out intertillage and weeding, etc., to promote the growth of stems and leaves, ensure normal panicle differentiation, and achieve the goal of high yield. Carry out intertillage and weeding in time to avoid weeds grabbing nutrients. The late stage is mainly maintenance, preventing premature aging of the plants, promoting early maturity and increasing grain weight.

The above are the high-yield planting techniques for sorghum brought by Qinnong Net. To achieve high and quality yields in sorghum, pest and disease control is also an important point. Pest and disease protection work should focus on prevention, combined with agricultural control and chemical control.