1. sowing date
According to the base temperature and soil moisture content, when the 5 cm ground temperature is stable at about 10℃ and the soil moisture content is between15% and 20%, it is most suitable to sow about 7 days earlier than the conventional sorghum sowing date. The treatment method of bacterial soil is: using the mature sorghum black rice bacterial powder harvested last year, 7 days before sowing, mixing the bacterial soil at a ratio of 0.8%, keeping a certain temperature, and covering it with plastic sheets to germinate the bacteria. The sowing method is hole sowing, with 5-6 seeds placed in each hole, and then covered with about100g of bacterial soil, and then covered with about 5cm of soil. When sowing, the seeds should be concentrated, and the bacteria soil should cover the seeds tightly. The sorghum varieties selected are Shenza 5 and some old varieties.
2. Planting method
Reasonable planting methods can make full use of land and sunshine, facilitate field management, especially improve the inoculation rate of black rice flour. The key technology of planting sorghum black rice is how to improve the inoculation rate and achieve the goal of high yield of black rice. The experiment shows that hole sowing is the best way of sorghum, the inoculation rate is obviously higher than other sowing methods, and it saves strains and is the most ideal planting method.
fertilize the soil or land
According to the soil conditions, 3000 kg of farmyard manure, 0/0 kg of diammonium phosphate and 0/5 kg of urea can be applied per mu of medium fertility soil, or it can be adapted to local conditions.
4. Tian Tuan management
Appropriate planting density is an important factor to obtain high yield and high quality of black rice, and the key is the coordination between individuals and groups. Planting density depends on production conditions, fertilization and field management. Under conventional management conditions, the optimum density per mu is 9000 ~ 10000 plants. Sorghum seedlings should be fixed when the leaves are 3 ~ 4, and 2 plants should be left in each hole to ensure the number of seedlings per mu. Other management methods are the same as conventional sorghum production methods. Sorghum pests mainly include armyworms, aphids and sorghum borers. You can refer to the control methods of conventional sorghum production, but you should use low-toxic and high-efficiency pesticides, not high-toxic pesticides.
Timely harvest
Harvest when the quality reaches the best, and give due consideration to the yield. The best harvest time is about 70 days after sowing, when the bracts are about to be pulled out from the bracts, but they have not yet emerged. When harvesting, the bracts should be kept, cleaned and refrigerated in time, generally not exceeding 10 hour, and put into storage as soon as possible. Two crops can be harvested every year, the first 1 crop per plant 1 crop, and the second crop is 2-3 crops. 1 one grain of black rice for one crop and 0.1one grain of black rice for two crops/5 yuan. The income per plant is 0.55 yuan, and the income per mu is 5500 yuan. After deducting the expenses, the net income per mu is 5000 yuan, and the net income per 10/0 mu for planting black rice is 50,000 yuan.