FI97848C - Method for sowing forest in the field - Google Patents

Description

97848

Method for sowing forest in the field. - Förfarande för att besä en äker med Skog.

. The invention relates to a method for sowing a forest in a field according to the preamble of claim 1.

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The applicant's previous Finnish patent application FI 951663 discloses a forest seed drill and a method for sowing a forest. This drill and method are particularly suitable for reforestation. The object of the present invention was to develop the device and the method in question so that they are also suitable for afforestation of fields. To achieve this object, the method according to the invention is characterized by the things set forth in the characterizing part of claim 1.

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In the method according to the invention, the cover plant is first sown in the field in the normal way and only then, before the seedling has germinated, seed of at least two tree species is sown in rows so that in each row a mixed tree is sown, one of which is a fast growing tree. grassland after two years at the latest. As a protective plant, for example, oats or rye or a suitable plant species used for cultivation in each country can be used.

When sowing tree seeds in the field, a deep cavity in the field should be avoided and therefore the structure of the seed drill according to the aforementioned FI application 951663 has been slightly modified. The perimeter of the dish does not need different types of wood. various shaping claws for seeds, but the plate may have a smooth edge or be provided with pins or similar members to ensure rotation. In addition, a support and sealing wheel 35 is arranged in connection with the disc, with which the height of the seed drill can be adjusted.

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The invention will now be described in more detail with reference to the accompanying drawings, in which Fig. 1 is a schematic plan view of an embodiment of a forest seed drill suitable for the method according to the invention, Fig. 2 is a schematic side view of a seed drill according to Fig. 1, and Fig. 3

The seed drill according to the figures comprises a seed unit 1 fastened to the transverse frame beam 6a of the body part 6 to be connected to the tractor by an articulation 9, formed by longitudinal rods 7, 8, between which a disc 2 with associated seed members 12-16 is mounted. The plate 2 is mounted in an adjustable angular position between the longitudinal bars 20 7, 8. This angular position adjustment can be performed, for example, by holes 10 formed in the end of the outer longitudinal rod 7 and by a fastening member 30 connected to the end 24 of the plate 24 shaft, through which an elongate fastening groove 31 is formed, through which a suitable fastening member, e.g. 10. The shaping of the end of the rod 7 with the holes 10, e.g. as shown in Figure 1, makes this adjustment of the angular position a very simple operation. However, when sowing tree seeds in a field, the position of the disc is practically substantially parallel to the sowing rows and the possibility of adjusting the angular position is not necessary. In the embodiment shown in Fig. 1, there are two seeding units 1 mounted in such a way that the discs 2 are turned to angle work 35 opposite to the direction of travel A of the machine. Such seeding units 1 can also be mounted on the transverse beam 6a only in one piece or in several pieces, e.g. three or four pieces. Each sowing unit is additionally provided with a support and sealing wheel 32, which is provided with a height-adjusting member 33, which may be, for example, a crank-operated lifting screw. In the embodiment shown, the wheel 32 is connected to the rear end of the rod 7 in the direction of travel A as seen.

Figures 2 and 3 show in more detail an embodiment of the seed sowing members 12-16 of a seed drill suitable for the method according to the invention. The essential element of the sowing members is at least two cogwheels 12a, 12b, 12c mounted on the same shaft 24 as the disc 2, which cavities are in each case intended for seeds of different species of wood. A separate seed hopper 13 is arranged above each cogwheel and below it a funnel 14 from which a seed feed tube or trough 15 leaves. Figure 3 shows in more detail a structural section of the cavity wheels. Each cavity wheel 12a-12c in each case has at least one cavity 19 and 20 and 21, respectively, for receiving seeds from the seed hopper 13. Each cavity wheel is further provided with a scanning groove 22 passing through said at least one cavity 19-21, in which a scanning member 16 14 and further into the supply pipe 15. In addition, each side of this scanning groove 22 preferably has mounting grooves 23 in which the lower edges of the opposite side edges of the seed hopper 13 can be mounted. The lower edge of the seed hopper is preferably sealed against the upper surface of the cavity wheel in question by means of a suitable sealing member (not shown). Inside the outermost cogwheels 12a, 12c are provided bearing means (not shown) for rotating the cogwheels around the shaft 24. In order to fasten the plate 2, in the illustrated embodiment example 35 (Fig. 3), a flange member 17a is attached to the cavity mounting sleeve, e.g. by welding, and on the opposite side of the plate 2 there is another flange member 17b. 34 to ensure the rotation of the plate, which rotation in turn causes the cavity wheels to rotate.

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The cavity wheel 12a with the largest cavity 19 is intended for birch seeds and the cavity wheel 12b with the smallest cavity 20 for spruce seeds and the cavity wheel 12c with a slightly larger cavity 21 for pine-10 seeds. The cavities of the cogwheels can be made according to the individually available seed size (processed or unprocessed seed) and the cogwheels can be individually replaced if required. The cavities of the cavity wheels are suitably dimensioned so that at least two seeds are sown in each cavity from each cavity.

In the method according to the invention, the protective plant is first sown in the field in the normal way and only then, before the protective plant has germinated, seed of at least two different tree species is sown in at least one row a fast-growing tree, such as birch, which, under its shade, overcomes herbaceous vegetation.

25 Another type of tree is more suitably a conifer, such as pine or spruce.

Claims (2)

97848 A method for sowing a forest in a field, characterized in that the method first sows a protective plant and then a tree seed, which method uses a seed drill (1) for sowing at least two different species of wood at the same time. seeds in at least one machine direction row with a disc (2) and at least two different coulter wheels (12a-12c) for sowing 10 different seeds mounted on the same shaft (24) as the disc (2). Method according to Claim 1, characterized in that oats, rye or other protective plants suitable for the field and / or climate in question are used as the protective plant, the soil being first adapted to sowing the protective plant, the protective plant being sown and the seed of at least two species being sown. one is a fast-growing tree species, such as birch, that 20 helps control grass vegetation. 97848