Tooth harrow BZSS-1 (weight

The BZTS-1 heavy harrow is used for crushing blocks and loosening layers after plowing, combing out weeds, cultivating meadows and pastures. The BZSS-1 medium harrow is designed for loosening and leveling the field surface, destroying weed seedlings, breaking clods, applying fertilizers, harrowing seedlings of grain and industrial crops. The lightweight BZLS-1 harrow is used for harrowing crops, destroying the surface crust, planting seeds and mineral fertilizers, and leveling the surface before sowing.

Tooth harrows are used to cultivate the soil to a depth of 3...10 cm. The diameter of the lumps after treatment should be no more than 5 cm, the depth of the furrows is 3...4 cm. In the spring, winter crops are cultivated with tooth harrows: the top layer of soil is loosened and dead plants are removed. The number of damaged plants should not exceed 3%.

Characteristics

1	Destination indicators	BZTS 1.0	BZSS 1.0	BZLS 1.0
1.1	Working width, m	1,0	1,0	1,0
1,2	Operating speed, km/h	up to 12	up to 12	up to 12
1.3	Processing depth, cm	up to 8	until 6	5-6
1,4	Weight, kg	42	35	30
1,5	Overall dimensions, mm
—	Length	1352	1352	1352
—	Width	970	970	970
—	Height	220	220	205
1,6	Pressure on tooth, kg	1,6-2,0	1,2-1,5	0,6-1,0
1.7	Tooth pitch, cm	50	50	50
2	Reliability indicators
2.1	Warranty period, months	12	12	12
2.2	Service life, years	8	8	8

Types

1) The BSO-4 mesh harrow is intended for:

loosening the top layer of soil and destroying weeds on crops when seedlings appear,
for harrowing potato ridge plantings.

The harrow section is made up of a frame to which a mesh cloth is attached with chains. The BSO-4 working bodies adapt well to field unevenness. The blade links are made from round steel rods with pointed or blunt toothed ends.

Harrow sections are connected to the NUB-4.8 hitch beam with rods and chains. Chains hold the sections in the raised position. The timber is positioned so that the front and rear rows of harrow teeth are equally deep . The chains should sag , which allows the harrow sections to follow the field topography.

2) The ShB-2.5 trail harrow is used for spring harrowing in order to cover moisture and level ridges in fields plowed under plowed soil.

Two links are attached to the vaga by chains. Each link has a knife for cutting ridges, a rake for loosening the soil, and a train of steel angles connected by chains to level the soil surface.

To adjust the depth of processing, use the lever to change the angle of the knife.

3) The BP-8 mounted spring harrow is designed for combing out weeds and loosening the surface layer of soil clogged with stones. BP-8 is composed of:

main section
two side intermediate
two extreme sections.

It is permissible to detach the side and outer sections and change the working width of the harrow within 8.4; 6; 3.6 and 3 m. The harrow is equipped with teeth with spring struts. The teeth are fixed on the cross bars of the frame in four rows.

To level the field surface, a leveler, rotary and spring harrows are additionally attached to the BP-8.

4) The rotary hoe is intended for spring loosening of the soil on winter crops and pre-sowing treatment in order to destroy the soil crust and weeds.

The working parts of the hoe are needle-shaped disks with concave needles with sharp ends . Several disks mounted on an axis form a battery. Adhering to the soil, the discs rotate and make 150 injections per 1 m² , destroying the soil crust.

To reduce damage to cultivated plants when processing crops, batteries are attached to the frame so that the needles are directed with the convex side in the direction of movement (the disk rotates in the direction of arrow K).

To intensively loosen the soil and destroy weeds, the batteries are rotated 180° (the disk rotates in the direction of arrow M). By changing the mass of ballast on the site, the working depth is adjusted to 9 cm.

Tags: harrow

Harrowing the soil

Harrowing is understood as soil cultivation, including technological operations of loosening, mixing and leveling the surface without turning over layers and layers of soil. It is necessary when caring for agricultural plants, to destroy the soil crust and destroy young, immature weeds.

Harrowing thins out thickened crops, embeds fertilizers, increases the aeration of the upper arable layer and retains moisture in the soil.

Depending on the cultivated crop, harrowing is carried out after sowing and seed emergence.

The best crumbling and mixing of the soil occurs when it is harrowed at a humidity of 50-70% of its full moisture capacity. When harrowing dry soils, the teeth of the implement go deep shallowly and unevenly, so the blocks are incompletely crumbled and the soil is sprayed. Too wet soil does not mix well, hardly crumbles, and an unfavorable surface microrelief is created.

When harrowing, the tractor is used less efficiently than in other types of soil cultivation; therefore, it is very important to carry it out at higher speeds with fewer harrows in the unit. The combination of harrowing with cultivation and other types of processing is considered the most optimal. This minimizes the adverse impact of heavy machinery on the soil structure. It is recommended to harrow the top layer of a plowed field at a speed of 7-8 km per hour. In the spring, when harrowing winter crops and seedlings of row crops, the tractor speed can be slightly reduced (6 km/h). When harrowing at higher speeds, the necessary loosening of the soil is achieved and labor productivity increases.

Agrotechnical requirements for harrowing

After passing the harrow, the soil should be finely lumpy, with a particle diameter of no more than 3 cm. When harrowing winter crops, row crops and perennial grasses, weeds should be completely destroyed, and no more than 3% of cultivated plants should be damaged. To avoid mistakes, subsequent strips of treated soil overlap the previous ones by 15-20 cm.

Harrowing is used as a method of caring for fallows, crops and grasslands. Harrowing can be carried out separately or simultaneously with plowing, cultivation, sowing and other techniques.

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Characteristics

Types

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