Seed price and planting method of sweet sorghum

Sweet sorghum is a variety of grain sorghum of Gramineae sorghum. It originated in Africa and spread to China through India during the Wei and Jin dynasties. It was planted as a forage and sugar crop for a long time. It is known as "northern sugarcane" and has a wide range of uses. It not only produces grain, but also produces sugar and syrup. It can also make wine, alcohol and monosodium glutamate. Let's take a look at the seed price and planting method of sweet sorghum.

How much is the sweet sorghum seed per jin?

The price of sweet sorghum seeds is about 10-15 yuan per jin, but it varies according to the quality, variety and market of sweet sorghum seeds. Sweet sorghum has a long history in China, distributed from Heilongjiang in the north, Sichuan, Guizhou, Yunnan and other provinces in the south, Uygur Autonomous region in the west, Jiangsu and Shanghai in the east, especially in the lower reaches of the Yangtze River. However, with the improvement of people's living standards in urban and rural areas, it is no longer a staple food, and the cultivated area is reduced, and now there is only sporadic cultivation.

Sowing method of Sweet Sorghum

1. Land selection and soil preparation: sweet sorghum has developed root system and strong water absorption and fertilizer absorption, so it is appropriate to choose flat, loose and fertile land for planting, and the requirements for the previous stubble are not strict, including corn stubble and soybean stubble. But before sowing, we must do fine soil preparation, rake the ground flat and fine.

2. Seed selection and drying: sweet sorghum was selected or screened by wind before sowing, small, shrunken and diseased seeds were eliminated, and large and full seeds were selected for production. At the same time, choose sunny weather and dry for 2-3 days to improve seed bud potential and bud rate.

3. Chemical seed dressing: sweet sorghum seed dressing before sowing can choose high-quality seed coating agent to control smut, seedling diseases, element deficiency and underground pests, or 25% vermicellin wet powder can be used to mix seeds according to 0.3-0.5% of the seed amount.

4. Sowing time: the sowing date of sweet sorghum is determined according to the growth period of varieties, soil temperature and soil moisture. Generally, the soil temperature of 5 cm plough layer is stable at 10: 12 ℃, and the soil water content is 15-20%. Late-maturing varieties are sown early at the right time, and early-maturing varieties are sowing late at the right time.

5. Sowing density: the sowing density of sweet sorghum is based on the principle of "fertile land should be dense and thin land should be sparse". It is usually 65-70 cm ridge with double rows of equidistant strips on the ridge, and the general sowing rate of dwarf varieties is 15-22.5 kg / ha.

6. Sowing depth: the sowing depth of sweet sorghum is 3-4.5 cm, but the sowing depth of different soil types should be controlled flexibly, those with close adhesion and easy consolidation should be sowed shallow, and those with poor soil moisture conservation in sandy land can be sowed properly.

Planting methods of Sweet Sorghum

1. Seedling fixing: sweet sorghum seedlings should be fixed during the period of 3 to 4 leaves and 5 to 6 leaves. The seedlings should be kept at equal distance, strong seedlings, positive seedlings, no double seedlings and second stubble seedlings, and miscellaneous plants should be pulled out to improve the purity and give full play to the yield-increasing effect of improved varieties.

2. Intertillage management: sweet sorghum was ploughed for 2 times at seedling stage, the first time was combined with fixed seedlings, and the second time was carried out 10 days later. Intertillage was carried out before and after jointing, which was combined with topdressing and soil cultivation to promote growth and enhance the ability of preventing wind, lodging and soil moisture storage.

3. Timely irrigation: the water requirement of sweet sorghum at seedling stage accounts for about 10% of the total water requirement during the whole growth stage, 50% at jointing and booting stage, 15% from booting to flowering stage, 20% at filling stage, and about 5% at mature stage. It should be irrigated at jointing, flowering and filling stage.

4. Rational fertilization

① sweet sorghum should be planted with sufficient base fertilizer combined with soil preparation, with phosphate fertilizer as the main fertilizer, 35% special compound fertilizer 30kg / mu, combined with organic fertilizer 15002000kg.

After emergence, ② sweet sorghum can be fertilized with seedling extraction fertilizer according to seedling emergence. At jointing stage, rotten agricultural fertilizer 1000 kg / mu and urea 10 kg / mu can be applied.

③ sweet sorghum can apply 1000 kg / mu of agricultural fertilizer and 20 kg / mu of urea at booting stage.

④ sweet sorghum can apply 1000 kg / mu of agricultural fertilizer and 8 ~ 10 kg / mu of urea during filling stage.

⑤ sweet sorghum was sprayed with appropriate amount of potassium dihydrogen phosphate from heading to filling stage to promote early maturity and increase yield.