In the laboratory of the Institute of technology of China Agricultural University, a yellow and green agricultural machinery is particularly attractive. It turns out that this is a high-speed single grain precision seeder that won the second prize of the national science and Technology Progress Award in 2019. What's the secret of how this machine can promote the upgrading of our corn planter?
Corn is one of the main grain crops in China, with a wide planting area. In the actual production, there are some key technical problems in the seeder, such as the difficulty of straw cleaning, the low rate of single grain in precise seeding and the difficulty of seeding quality control. Zhang Dongxing, a professor at the school of technology of China Agricultural University, has been engaged in mechanized teaching and scientific research for a long time. 12 years ago, he and his team began to overcome a number of technical problems and develop a high-speed single grain precision seeder. "After the machine has been studied in the laboratory, it will encounter various problems after landing. The team has worked hard for more than ten years to solve a series of problems in the field, and finally we have this model that we are slightly pleased with." "Two years ago, we jointly developed and produced this machine with relevant manufacturers, and further promoted its application to actual production," Zhang said In 2019, the project team finally made a major breakthrough. The project innovated the key technologies of straw efficient cleaning, high-speed single grain precision seeding, uniform sowing depth control of corn with less and no tillage seeding, created a technical model, and created a series of equipment.
Zhang Dongxing pointed to the machine in the laboratory, excitedly said that in the actual operation of the high-speed single grain precision seeder, corn will fall to the field with the rotation of the mechanical plate, realizing single grain precision sowing, avoiding the heavy labor of farmers under the ground, reducing the labor cost and labor intensity, improving the uniformity of corn seedling emergence, saving the cost of seeds Through the improvement of these three aspects, the cost-effective and high-yield efficiency of corn production has been realized. It is reported that the results of the project have been applied to 15 provinces and 11 countries. The technical equipment has been transformed and applied by nine enterprises, with obvious technical advantages and strong market competitiveness, which has promoted the upgrading of the corn planter with less and no tillage in China. In 2020, Zhang Dongxing and his team will focus on promoting efficient and large-scale production in Northeast China, and at the same time, promote the annual high-yield corn production in Huang Huai Region with two crops in one year, actively follow up the international advanced production technology, carry out in-depth research on intelligence and information technology, and strive to reduce the production technology gap with the international developed countries. It is worth noting that another corn planter is also seen in the laboratory. This machine is similar to the high-speed single grain precision planter, but it is quite different after careful observation. Zhang Dongxing said that this is the next step of technical research. The machine will realize intelligent electronic drive, detect the field situation in time during operation, and realize variable sowing according to soil fertility, water content, organic matter content, etc. (source: Beijing News)
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