1. Selecting precision and semi-precision seeders in accordance with local conditions to implement precision and semi-precision seeding is an important measure to achieve precision agriculture with machinery. Practice has proved that, under the existing conditions of soil fertility and fertility, appropriate reduction in seeding rate makes wheat seedlings suitable starting point, reasonable dynamic structure, adequate light in the field, robust individual development, and large and heavy grains, which is widely accepted by farmers. High yield measures. Addition of precision and semi-precision seeders should be adapted to local conditions. If the field is medium in fertility, the agronomics adopt the cultivation method of both the main stem and the spike and the tiller to form the heaviness. The basic seedlings are required to reach 180-2.7 million plants/hectare (sowing 90- 135 kg/ha), with a yield of 5250 to 6,000 kg/ha, an external groove wheeled metering device equipped with 16 straight grooves should be selected, which can complete the procedures of rotary ploughing, trenching, sowing and repression. Semi-precision seeder. If it is a field with superior fertility, a small population and cultivation method based on tillering shall be used, requiring that the basic seedlings reach 1.2 to 1.8 million plants/hectare (60 to 90 kg/hectare sowed), and the yield will reach 6750 kg/ha or more. It is necessary to select a seeder equipped with a socket wheel type and a conical disc type, which can complete the operations of rotary ploughing, ditching, and covering and repression at a time. The choice of precision, semi-precision seeders also varies with power machines. The specifications of the precision and semi-precision seeders are designed based on the size of the power and the mounting method of the tractor.