Two-section fixed-point and fixed-plant blanket type tobacco seedling raising method

Abstract

The invention belongs to the technical field of blanket type seedling raising, and discloses a tobacco two-section type fixed-point and fixed-plant blanket type seedling raising method which comprises the following steps: designing and determining the position of a seed hole for seedling raising and sowing by adopting a fixed-point seedling raising mode according to the operation parameters of a planting type transplanter; after tobacco seedlings are sown and before root systems start to be horizontally coiled, seedling trays are placed in water receiving trays, or the seedling trays are placed in seedling compartments, and plastic cloth is laid at the bottoms of the seedling compartments to prevent water added into the seedling compartments from permeating; when the seedling age is about 25-30 days and the root system at the bottom of the substrate starts to be horizontally coiled, the seedling tray is placed on a seedbed above the ground, the seedbed is 80-100 cm above the ground, and a bed board is hollowed out, so that the bottom of the seedling tray is transparent, water and water are not stored at the bottom of the seedling tray, and air permeability is kept; seedling type management: after the tobacco seedlings emerge uniformly (cotyledons are completely expanded), thinning is performed for the first time, redundant weak seedlings in a seedling tray are removed, one plant is fixed in each hole, if a missing plant exists in the seedling tray, temporary planting and seedling filling are performed when the second to third true leaves of the tobacco seedlings are born, namely in a large cross period, and it is ensured that the seedling tray does not have the missing plant.

Description

technical field [0001] The invention belongs to the technical field of blanket-type seedling cultivation, and in particular relates to a two-stage fixed-point and fixed-plant blanket-type method for raising tobacco seedlings. Background technique [0002] At present: Under the background of the development of tobacco mechanization operations, high-speed transplanting machines are currently the cutting-edge transplanting mode. The working principle of the high-speed transplanting machine is to rotate and move the blanket-shaped tobacco seedlings through the mechanical planting arm, and evenly divide the seedling trays on the seedbed horizontally and vertically, and the roots and stems of the tobacco seedlings, together with the substrate, pass through the mechanical wall. The grabbing tool at the front end is implanted into the soil after grabbing, which is also called seedling transplanting. Therefore, the mechanical operation requires that the tobacco seedlings be easy to ...

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Problems solved by technology

[0004] (1) The rate of missing plants is high. For the tobacco seedlings raised by the method of raising rapeseed blanket seedlings, the rate of missing plants in mechanical transplantation in the field is as high as 50%-60%. Increase the density of seedling trays, and the rate of missing plants in field transplanting remains high.

[0005] (2) The density is too large, the quality of transplanted seedlings is poor, and it cannot reach the standard of strong seedlings for tobacco seedlings

[0006] (3) The workload is heavy, and semi-artificial sowing is used for the blanket seedling cultivation of rapeseed, which is time-consuming and labor-intensive

[0007] (4) The current method of raising tobacco seedlings, the root system of the tobacco seedlings cannot form a blanket shape, which is not suitable for the operation of the high-speed transplanting machine

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