Main problems to be solved in rice mechanization of direct seeding planting

In the rice production areas where China's accumulated temperature is relatively affluent, for the large-scale, economically developed rice areas, the mechanization of the direct seeding of rice should be developed with emphasis on the following issues:
1) Rice seed processing technology and equipment. Seed processing is an important part of the rice broadcast technology. Seed treatment technology can solve the problems of seed coating and germination rate, and reduce the seed amount of direct seed rice.
2) Efficient and quality soil preparation equipment. Another important aspect of the live rice broadcasting technology is to improve the quality of soil preparation. Therefore, it is necessary to research and develop large-scale and highly efficient soil preparation equipment.
3) Rice direct seeding precision seeder. After solving the problems of seed and soil preparation, the precise distribution of seeds in the field must rely on the high-efficiency rice direct seeding precision plant. This implement can adapt to different seeds in terms of performance, and can achieve accurate plant spacing and row spacing in the field. For the later growth of rice to create a good condition.
23. What are the rice mechanized live broadcast machines?
At present, China's water diverter and drought digger are mostly adopting external groove wheeled seeding methods, such as the Hujia J-2BD-10 type of water diverter and the Sukun 2BD-8 type of water di , 2BG-6 rice and wheat less (free) tillage seeding machine and its improved type of dry direct seeding machine.
1) Hujiao J-2BD-10 and Sukun 2BD-8 rice water diverter all use uni-wheel drive, the power is 3-horsepower diesel engine, the seeding mode is drilled, the number of rows sown is 10, 8 rows, and the sowing speed is both For 2 meters, the sowing rate is adjustable from 60 to 75 kilograms per hectare, and the productivity is 0.53 hectares per hour. The structure is lightweight, light and flexible, and can fully reflect the characteristics of rice water live broadcasting, labor saving and cost saving.
2) 2BG-6 rice-rice seed drill, which is matched with Dongfeng-12 walking tractor and can complete the procedures of rotary cutting of soil, hoeing, ditching, seeding, earth covering and repression. The working mode is shallow spinning, broadcast 1.2 meters, line number 6 or 5 lines, broadcast depth 10 to 50 mm, broadcast volume 60 to 110 kg/m3, productivity 0.23 to 0.4 hectares/hour.
3) At present, many kinds of sowing forms of live broadcasting machines have been developed in many regions of China, such as the rice seeding machines jointly developed by Jiangsu Agricultural Machinery Extension Station and the Institute of Water Hydraulics and Agricultural Machinery of Suzhou City. Number 6 rows, row spacing 300 mm, hole spacing 120 mm, working efficiency 0.25-0.35 hectares/hour. The 2BDQ-8 vibrating airflow type of a water-based direct-flow machine adopts a vibrating type seeding method and an air blowing type method for earth insertion. The number of rows is 8 rows, and the productivity is 0.4 hectares/hour. The 2BD-5 man-made rice on-demand machine, produced in Yulin, Guangxi, has five lines of sowing, a sowing volume of 1.25 meters and a productivity of 0.13 to 0.20 hectares per hour.
Due to the fact that the original water diverter has a single wheel running mechanism and an integral support plate, the body is bulky, the operation is difficult, the labor intensity is high, and there are unsafe factors; the groove wheel type metering device does not adapt to the physical characteristics of the rice seed, and the seeding performance Instability, high insult rate, there are many areas are currently developing new type of water to overcome the shortcomings of the direct broadcaster, such as the Kunshan agricultural machinery research, the use of belt-type institutions, the upper row type, the advantage is not to injure. At the same time, the split type floating board is used to avoid the phenomenon of large pallets picking mud and water.