Where is the origin of sorghum? Sorghum sowing time and planting techniques, sorghum, é», é», hibiscus, etc., are annual herbaceous plants of Gramineae, widely distributed in China, almost all over the country, but the main producing areas are concentrated, Qinling North of the Yellow River, especially the north of the Great Wall is the main producing area. The country is divided into spring sowing early maturity area, spring sowing late maturing area, spring and summer sowing area and four cultivation areas in the southern Gaochun area. Let's take a look at the sorghum production area. Where are you!
The early-maturing areas of the spring sowing early-maturing area include Heilongjiang, Jilin and Inner Mongolia, Chengde area of ​​Hebei Province, area under the Zhangjiakou Dam, Shanxi, northern Shaanxi Province, Ningxia arid area, central Gansu Province and Hexi area, northern Xinjiang plain and basin.
The spring sowing early maturing area is at 34°30'~48°50' north latitude, 300~1000 meters above sea level, the annual average temperature is 2.5~7.0°C, the accumulated temperature of activity (the accumulated temperature of ≥10°C) is 2000～3000°C, and the frost-free period is 120～150 days. The annual precipitation is 100-700 mm. The production varieties are mainly premature and medium-early maturity. Due to the low accumulated temperature, sorghum production is susceptible to low temperature and cold damage, and technical measures for preventing low temperature and promoting early maturity should be adopted. It is cooked every year, usually in mid-May and mid-May, and harvested in September.
The spring sowing and late-maturing area is the main producing area of ​​China's Gaochun, with high yields, including Liaoning, Hebei, Shanxi, Shaanxi and other provinces, Beijing, Tianjin, Ningxia's Huangshui District, Gansu Province's eastern and southern parts. Southern Xinjiang and Dongjiang Basin in Xinjiang.
The spring sowing and late maturing area is located at 32~41°47' north latitude, with an altitude of 3 to 2000 meters. The annual average temperature is 8~14.2°C, the active accumulated temperature is 3000~4000°C, the frost-free period is 150-250 days, and the annual precipitation is 16.2-900 mm. Basically, it is cooked once a year. Due to the good heat conditions, late varieties are used for cultivars. In recent years, due to the reform of the farming system, the summer planting sorghum is planted after the wheat harvest, and it becomes a three-year ripening or a two-year ripening in a year.
The spring and summer sowing area Gaochun spring and summer and sowing area include Shandong, Jiangsu, Henan, Anhui, Hubei, Hebei and other provinces. It is located at 24°15'~38°15' north latitude, with an altitude of 24-3000 meters. The annual average temperature is 14 ~17 ° C, active accumulated temperature 4000 ~ 5000 ° C, frost-free period 200 ~ 280 days, annual precipitation 600 ~ 1300 mm.
Spring-summer sorghum and spring-sowed sorghum each accounted for about half, and spring-sown sorghum was mostly distributed on low-lying, low-lying and saline-alkali soils, mostly using mid-late maturity, and summer-sown sorghum was mainly distributed on flat-fertilizer land as summer harvest crops. After the sputum, more early maturing species with a growth period of no more than 100 days. The cultivation system is mainly based on two or two years of three seasons.
The southern Gaochun District of Gaochun District includes the southern part of Central China, all of South China and Southwest China. It is located at 18°10'~30°10' north latitude, with an altitude of 400-1500 meters, an annual average temperature of 16-22 °C, and an accumulated accumulated temperature of 5000-6000 °C. The frost-free period is 240 to 365 days, and the annual precipitation is 1000 to 2000 mm.
The southern Gaochun District has a wide geographical distribution and is mostly planted in a small number. The provinces with relatively more planting are Sichuan, Guizhou and Hunan. The varieties used are very short-lived, with scattered and sorghum varieties, most of which are sparse. The cultivation system is three-year-old, and in recent years there has been some development in the regeneration of sorghum.
This article URL: Where is the origin of Gaochun? Sorghum sowing time and planting techniques
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