36results about How to "Improve seeding uniformity" patented technology

The invention discloses an inner positive pressure combined seed metering device, which comprises a front housing, a rear housing, a seeding disc, a seed unloading wheel and a seeding shaft; the wall thickness of the seeding disc is evenly distributed along the circumferential direction A number of combined holes composed of filling grooves and inoculation holes; air holes are provided on the bottom of the filling groove of each combined hole, and an air hole channel is opened on the seeding tray at the position of each air hole, and the air hole channel includes a A curved channel and a horizontally arranged straight channel, the edge of the cover plate of the rear housing is provided with an arc-shaped through hole, and the other end of the straight channel runs through the rear and the arc-shaped through hole on the rear housing along the axial direction of the seed tray It is connected with the atmosphere through the arc-shaped through hole. The inner seed filling type is combined with the air pressure type. In the seed filling stage, the seeds are first filled into the filling groove, and then pressed onto the air holes. Due to the constraints of the applied force and the depth of the filling groove, the The seeds will not slip out within a certain range, which increases the time for the seeds in the filling groove to be pressed and attached to the air holes.

The invention relates to a grafted cistanche mechanical sowing method. A device used in the method is composed of a seed box, a feed opening, a synchronous transmission shaft, a feeding device, a feeding door, a sowing box, and a feeding trigger switch. According to the sowing method, a little amount of seeds is sprayed at small intervals of distance, namely seeds are sprayed once at every interval of distance. A proper distance between seed sowing is guaranteed, and at the same time, a sowing machine walks, so seeds can be continuously and uniformly sprayed. Precise mechanical sowing of cistanche seeds is realized. The grafting effect and sprouting effect are good. The mechanization of whole cistanche grafting process is realized. The problems that the planting cost is high and the seed waste is severe in the cistanche plantation industry are solved. Precious cistanche seed resources are greatly saved. The cistanche grafting cost is largely reduced. The development of artificial cistanche plantation industry is promoted.

The invention belongs to the technical field of rice machine-planting and planting, and discloses a quantitative machine-planting method for rice. According to the basic number of machine-planted seedlings per hole (cluster) under a specific yield target, according to the sowing method, the survival rate of machine-planted seedlings is calculated and the machine-planted seedlings are The utilization rate and the seedling rate of the seedlings in the seedling trays are used to determine the number of seeds sown in the trays. Positioning, quantitative and uniform sowing are carried out by means of hole seeding and drill seeding, and the machine-planting method of corresponding horizontal seedling times is matched. Realize the accurate digitization of seeding rate and improve the uniformity of the distribution of machine-planted seedlings.

The invention relates to a caterpillar band recess next-to-ground precise seed discharging device, and belongs to the field of agricultural machinery and equipment. The caterpillar band recess next-to-ground precise seed discharging device comprises a rack, wherein the rack is provided with a seed discharging cabin with a seed distribution hole; a seed discharging caterpillar band which can be connected with a driving mechanism is arranged in the seed discharging cabin; the lower part of the seed discharging caterpillar band corresponds to the position of the seed distribution hole; the caterpillar band is provided with at least row of recesses along the length direction of the caterpillar band; each group of recesses is connected through a seed unloading ditch; each seed unloading ditch forms an annular form along the length direction of the seed discharging caterpillar band; the width of each recess is greater than the width of the seed unloading ditch, and the depth of each recess is the same with the depth of the seed unloading ditch; the lower part of the seed discharging caterpillar band is provided with a sliver sheet; and one edge, which is far away from the seed unloading ditch, of the sliver sheet is fixed on the rear cabin plate of the seed discharging cabin. The caterpillar band recess next-to-ground precise seed discharging device changes a way of carrying out seed distribution after seed discharging into a way of simultaneously carrying out seed discharging and seed distribution, the seed discharging device is connected with a ditching device into a whole, a seed metering process and a seed distribution process are combined into a whole, so that a sowing quantity can be precisely controlled, and seedling space distribution can be precisely controlled.