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(1) Checking the technical status Before working on the planter, it is necessary to check whether the various components are deformed, whether the fasteners are loosened, and whether the fastening, transmission, cultivation, and adjustment of the system operation are flexible, and the double disk openers and openers are up and down. Whether the mechanism is deformed. (2) Line spacing, sowing volume, and the adjustment line spacing of the marker are determined according to the technical requirements of agricultural production. The number n of openers that can be installed can be calculated as follows: n=L effective/ b +1 L effective: open ditch Mounting bracket effective beam length b: Leading distance If the calculated opener is singular, then the middle opener is installed in the middle of the opener mounting bracket; if it is even number, it is centered on the middle of the mounting bracket. Install symmetrically on both sides. When the transmission speed ratio is fixed, the seeding amount can be changed by changing the working length of the seeding sheave with the sowing amount adjustment handle. The greater the length of the groove wheel into the seed box, the larger the broadcast volume; otherwise, it is small. According to the requirements of agriculture and production, the actual seeding rate q can be calculated as follows: q = per acre sowing volume (kg/acre) * pi * seeder wheel diameter (m) * number of rotation of the ground wheel * line spacing (m) (1+Ground slip coefficient)/666.7 (kg) The specific method is to support the seeder so that the seed box is horizontal, the ground wheel can rotate freely, the opener is dropped, and the seed amount adjustment handle is placed in an appropriate Location. Add - a fixed number of seeds, and include seedlings, and inoculate the inoculation bag under the seedlings. Then, at a speed similar to that of the official work in the field, the walking wheel is evenly rotated 20 to 30 rounds, and the seed amount in each inoculation bag is weighed and compared with the actually calculated seeding amount q (the actual calculation of the wheel slip The coefficient - generally takes 0. 05~0. 1). Marker length calculation. In order to make the row spacing of the adjoining two row spacings normal, no replays and missed broadcasts will occur, guiding the tractor to run correctly, and the length L of the marker (distance from the furthest row opener to the marking line). Tractor center line alignment trace: L=(B+b)/2 If the tractor is driving in the wrong direction, the tractor's right front wheel is often used to align the print, so the left and right stroke lengths are not equal: L Left (B+b )/2+A/2 L Right (B+b)/2-A/2 B: Broadcasting amplitude b: Leading distance A: Center distance of the front wheel of the tractor (3) Before the pilot planter operation, field trial broadcasting should be conducted firstly. The sowing quantity, sowing depth (achieved by adjusting the depth of the trenching ditch opening), the quality of the covering soil, the adjacency row spacing, etc. are checked and adjusted until all the items meet the requirements, and formal sowing operation can be performed. First calculate the number of return seeding Q (kg): Q = 2 acres sowing volume (kg) * broadcast amplitude (m) * sowing stroke length (meters) / 666. 7 Then add - quantitative in the seed box The seeds were screeded and marked, and a sowing seed for a round trip was added to the seed box for sowing. After the broadcast-a round trip, see if it is flush with the mark; if not, adjust the position of the adjusting handle, and then perform the trial broadcast until it meets the requirements. (4) Checking the seeding quality Often, check the various seed metering devices using the groove working length template to see if there is any change. Randomly take more than 10 measuring points along the diagonal direction of the plot to check the sowing depth. The deviation should not exceed plus or minus 1 cm. Checking the number of m and m actually seeded per m length within the sowing line can be calculated by the following formula: m=mu sowing volume (kg/mu)*line spacing (m)*106/666. 7 thousand grain weight(g) finished broadcast After the plot and the area, the area sown and the actual seeding rate and the mu seeding volume are checked, and if they do not meet the requirements, they are adjusted.