First, the choice of ploughing speed The requirements for ploughing are not recultivation, no ploughing, no arbitrage, no witnessing, and deep farming to meet agronomic requirements. The ILS-220 one-way double-blow plow is matched with the hand-drag, and the forward speed of the III-IV gear should be selected when plowing.
2. Rotary ploughing speed selection The requirements for rotary ploughing are: after the ploughing of dry land, the soil is finely crushed, the surface is smooth, and the porosity of the soil layer is suitable; after paddy field cultivation, the pulp rots and mashes, which is suitable for rice transfer (casting or transplanting). Hand tractors supporting rotary cultivator, dryland operation selected I-II file, rotary arbor rotation speed selected low speed 188 rev / min; paddy field operation selected II-III file, rotary turret shaft speed selected high speed 240 rev / min.
Third, sowing speed selection requires consistent broadcast depth, uniform sowing, no missed broadcast, replay and line breaks, good coverage, does not hurt the seeds. The 2BC-6A mini-drilling machine equipped with hand-dragging has better performance, and ploughing, smashing, opening, sowing, earth covering, and suppressing several processes are completed at one time. When the soil moisture content is lower than 20%, the forward speed is selected from II to III. When the soil moisture content is greater than 30%, the forward speed is selected from the II file. In general, the I-II file is selected.
Fourth, the trenching speed selection refers to the digging of field drains in wheat fields and cotton fields. The requirement for trenching is dimensional stability. The trench walls are smooth and the trenches are straight and clear. Hand-deployed IKSQ(H)-35A compact disc trencher, when the soil is loose and shallow, the depth of the ditch is shallow, the tractor forward speed can be selected as II (1125m/h); in other cases, all I file (625 meters/hour).
5. Parallel speed selection refers to the row of trenches excavated for wheat transplanting. Requires deep groove and stable line spacing. Hand-deployed IKMP-2 type cotton seedling transplanter, should choose forward speed II file.
6. Harvesting speed Selecting the harvesting operation requires less harvesting loss, cutting at a lower level (5 to 6 cm), and placing the harvested crops in order. Hand-mounted 4GL-130 harvesters have a flat surface, low soil moisture content, normal crop growth density, few weeds, and no lodging. IV speeds are available. In other cases, the third gear is selected.
VII. Seeding speed After selecting artificial wheat for seed speed, in order to prevent dew-seeds, deep-seeds and cluster-seeds, hand-to-seed IG-120 cover-seedling machines can be used to achieve uncovered seeds, consistent seed cover depth, and uniform grain distribution. Common forward speed is II-IV.
8. Paddy field speed selection refers to the leveling operation of paddy fields when rice is planted or thrown. It is required to have a flat field surface, good debris and weeds, and a slurry of pulp. Hand-disposed M-74 tractor diverter field for paddy field formation. Select III-IV speed forward.
Nine, straw returning to the field of speed over straw selection, chopping, embedding requirements completed once. The operation quality requirements are: the length of the chopped straw is 10-15 cm, the embedment depth is 2.5 cm or more, and there is no floating and exposed phenomenon. Generally choose the I-II file advance speed, the actual production uses more I files.
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