After the sorghum enters the heading and flowering stage and the filling stage, the management has entered the final stage. Only by doing well the late field management of sorghum can we ensure a bumper harvest of sorghum. Reapplying jointing fertilizer Sorghum needs the most fertilizer at the jointing and heading stage. Therefore, when the base fertilizer is sufficient and the fertilizer is small and only enough for one top dressing, it should be applied early in the jointing stage or a few days in advance. If the amount of fertilization is large, or there is the possibility of defoliation in the later period, the application should be divided into two according to the principle of first heavy and then light. Watering and draining Sorghum is in urgent need of water at the jointing, heading and filling stage, but it should be prevented from lodging caused by premature irrigation and internode elongation in the later period, so a small amount of multiple irrigation is required. If the soil water content exceeds 76% of the field water holding capacity, it cannot be irrigated. At the beginning of heading and grouting, the demand for water is more urgent and will reach a peak. Water demand in this period accounts for 36% of the total growth period. If drought is encountered at this time, the number of ears will decrease, which will seriously affect the development of young ears, cause the deterioration of spikelets and florets, and decrease the seed setting rate, which directly leads to a serious decline in yield. Cultivating soil After the jointing period, intertillage and deep intertillage can keep the soil loose, cut off part of the root system, inhibit the growth of the above-ground part, promote the production of new roots, expand the area for absorbing water and fertilizer, and have a positive effect on the formation of strong stems and large spikes and increase yield. The role of soil cultivation is to prevent lodging, maintain moisture content, concentrate soil nutrients in the rhizosphere, promote aerial roots to extend to the soil, and enhance the ability to absorb water and fertilizer. The latter period of intertillage should be combined with soil tillage to promote root removal, early growth and rapid growth, and enhance wind resistance, lodging resistance, drought resistance, and soil moisture retention capacity. Spraying plant hormones During the growth period of sorghum, spraying some plant hormones at the right time can adjust the relationship between plant vegetative growth and reproductive growth, prevent lodging, shortness of breath and nitrogen and phosphorus movement, and make plants flower early, accelerate filling, maturity, and increase production. Commonly used plant hormones include ethephon and chlormequat. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for handling. phone Tourmaline heating mat,Jade mattress,Natural jade and tourmaline mat,Tourmaline infrared heat mat Guangzhou Fuerle Health Technology Co., Ltd , https://www.fuerlehealth.com
Key Points of Field Management in Late Sorghum