Sorghum planting: what are the temperature requirements for sorghum?

What are the temperature requirements for sorghum? Please introduce that sorghum is a temperature-loving crop. The whole growth period requires a higher temperature than the municipal system. However, in different growth stages, the temperature requirements are also different. The lowest temperature for sorghum germination is 6 ℃. Sowing at this temperature can produce seedlings, but they germinate slowly and are easy to be infected by pathogens, so that the seedlings are infected or the seeds are moldy, and the emergence rate is low. The optimum temperature for sorghum germination is 25-30 ℃. When the gradient was as high as 44-50 ℃, germination slowed down or stopped. During the period from seedling emergence to jointing, the optimum temperature for sorghum growth was 20-25 ℃. At the seedling stage, the sorghum seedlings stopped growing when the low temperature was below 10 ℃. Sorghum seedlings are not resistant to low temperature and frost. The anti-freezing ability of sorghum buds was the weakest, and the freezing injury occurred when the temperature dropped to 3 ℃. But the temperature is too high and the growth is too fast. The seedling is thin and weak, which is also disadvantageous to plant growth. The period from jointing to heading is the most prosperous period for sorghum growth. The optimum temperature in this period is 2530 ℃. Can the right temperature promote? The differentiation of ear and the growth of stem and leaf, the moderate low temperature in this period? Panicle differentiation is beneficial. If the temperature is too high, the growth and development of the plant will be accelerated, the small size of the panicle will be less, and the stems and leaves will be studied carefully, which is not conducive to the later growth. When the temperature is more than 38 ℃, the growth and development of the plant is affected. The suitable temperature during flowering and pollination period is 26-30 ℃, which requires strict temperature. Low temperature will delay flowering and affect flowering and pollination. When the temperature is lower than 15 ℃, the plant can not bloom and pollinate normally, which can easily lead to poor pollination and decrease the seed setting rate. Large temperature difference between day and night is required from grain filling to maturity, which is beneficial to dry matter accumulation and grain filling maturity. The appropriate temperature in this period is 20-30 ℃, and the night temperature is required to be above 15 ℃, otherwise the pulp will be pulped. Early frost injury often results in poor maturity, poor grain fullness and decrease of 1000-grain weight. In the sorghum area of northern China, low temperature in autumn is the main factor affecting grain filling maturity. Therefore, when introducing varieties, we must understand the growth characteristics of introduced varieties, and we must not introduce late mature varieties blindly. Click to get more sorghum planting technology click to get more grain planting technology