4.The Agriculture Arch film single span greenhouse construction method and steps are as follows: (1) Planning orientation: according to the size and trend of the plot area, planning the orientation, length and width of
the greenhouse;
(2) buried anchor: on the planned plot, along the things on both sides of the border to play two rows of line
pressing anchor pit, 80 cm deep pit, the pit 40 cm in diameter, two rows of anchor hole distance of 13.5 m, symmetry, 25 per row,pits and pit 2 meters north-south spacing, close to plot the north and the south edge of the first line and
last line anchor pit deep 100 cm;After the anchor pit is played, the buried anchor line is buried. When the anchor is buried,
one end of the annulus is exposed to the ground by 5 ~ 10 cm, so as to serve as a visible sign when the soil is cultivated after unloading the shed. The other end of the annulus is buried in the pit with long bricks, and the anchor is stepped on and pressed tightly.Line pressing buried anchor, dig two rows in two rows of line pressing anchor inside anchor pit support line, two rows of anchor pit supporting line 12 meters away things, parallel arrangement, 24 per row, pits and pit 2 meters between the north and south spacing, just between the two line pressing, pit depth, crater diameter and line pressing anchor pit, dig into shore line anchor, after anchoring the same method and line pressing;Thrust
(3) the pillars: the thing between lateral support line anchor pit, from progressive symmetrical in both sides insert the column, side column spine, waist, waist column and the distance of 2.5 meters,spine edge column with waist column
2.1 meters, the boundary line of column and brace anchor 1.4 meters, the side column about 60 Angle with the ground,
after plug in the spinal column, waist, side column and brace line anchor in a straight line;
(4) fixed support line: pull the support line on the anchor, side column, waist column and middle spine of the support line, and fix the two ends well to keep the support line in a tight state;
(5) the installation of the side frame: two side frames are installed at the southern and northern ends of the planned plot. The side frame should be aligned with the support line. The inner side is supported by the appropriate length of the pillar, and the outer side is tensioned with the wire.
(6) buckle shed film: after the work done buckle shed film, buckle shed film to choose in the morning windless weather;Shed film after pulling, to the north and south ends of the edge frame outside the shed film buried in the soil, and keep the surface of the shed things do not leave wrinkles, north and south collapse tight state;
(7) fixed pressure line: buckle shed film, every two support line in between the
shed film with pressure line tension, the shed film pressure, made of internal support and external pressure type.