The grid cluster is a modern cluster tool. The structure is reasonable, and there are many camp sites, many cross-border camps, bright whites, good deconsolation, and high rates of catching, which can effectively improve the quality of silkworm cocoons. First, preparations 1. Tuft ligation: Zhang species equipped with 180-200 tufted pieces, using two pieces of the same direction of connection, tufted piece on the long border of a bundle of 1.3 meters long and 2.5 centimeters wide bamboo pieces With fine lead wire ligation and reinforcement, it is a rack-mounted checkered cluster. 2. New cluster treatment: After ligation of the tufts, appropriate amounts of mulberry leaf water should be sprayed and exposed to sunlight several times to increase the new tufting hole rate. 3, Tufting preparation: natural clusters, the distance between the layers should be 70-80 cm, so that after the cluster can raise the tufted tablets; to catch the silkworm, to be ready to collect the large hole of mature silkworm Membrane, set aside a tufting stand, the inner width of the tufted frame is 1.1-1.2 meters, the distance between the layers is 70-80 centimeters, and the film is spread on the ground and the straw is scattered. Second, on the cluster method 1, the silkworm on the cluster method: (1) on the cluster, the first floor of the plastic film, the double clusters of tablets spread on the film; the use of large-hole film to collect appropriate cooked silkworm; Silkworm 320 heads. (2) After mature silkworms have climbed on the tufted pieces (about 10-20 minutes), raise the tufted pieces and place them on the parallel long bamboo poles at the bottom of the cradling rack. The tuft spacing is 12 centimeters; when the lower layer is full, , Move up one by one in the order of priority, the top and bottom tufts remain in alignment. (3) After most of the mature silkworms have entered the hole and urinate (about 24 hours on the cluster), the underlying material is removed. 2, the natural cluster method: (1) fifth instar on the 4th day of sand removal, see the two days before the maturity level silkworm seat, silkworm silkworm place to leave the wall more than 30 cm. (2) A small amount of early-maturing silkworms catch the silkworm upper tufts. When they are ripe at 5%, they add ecdysone. When about 30% of the silkworms are mature, the leaves are thin-fed and then the tufts are clustered. The tuft spacing is 12 cm. (3) After most of the mature silkworms have entered the hole and urinate (after approx. 24 hours after the last squat), gently raise the racking rack and then remove all the silkworm sand. Third, the protection of the cluster 1, the management of the cluster: (1) on the night of the cluster, picked up the landing of silkworms on the cluster. (2) On the next day after the last day of the cluster, the “Yanshan Silkworm†shall be timely removed. 2. Cluster environment: (1) Strengthen ventilation and ventilation. After a day of clustering, open the window to keep the micro air flow moist. (2) Maintain proper temperature. Keep the temperature at 24-25°C and warm it if it is lower than 20°C. (3) The light should be uniform. Be properly obscured to prevent uneven light. IV. Sterilization and Storage After the stencil clusters are used, the attached floating filaments are first roasted on the fire tank and then sterilized with chemicals. They are covered with large sheets of plastic film, exposed to sunlight for 5 hours, and then uncovered. Film, put the pieces in a cool place and dry them, then expose them to sunlight. The disinfected tufts should be bundled flat and stored in a dry clean room. During sericulture, checkered clusters cannot be stored in the silkworm room.
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