Bale net is a kind of plastic woven net which is used for silage bale, grass bale, hay packing, etc. Bale net is fast becoming an attractive alternative to twine for the wrapping of hay bales.
Bale net is made by the machine with the cross stitch. About raw material, bale net is made of high density polyethylene which is environmental friendly, can meet resistance requirement of the ultraviolet intensity both in Northern and Southern Hemispheres, and is suitable for all crops under all conditions.
Bale net is usually made by rolls for its convenient to put into the Bale Machine. The machine can pack the hay with bale net only, and also can pack the hay first with bale net, then pack with plastic Silage Wrap outside.
The tension of each thread of the bale net is not less than 60N (6.12KG or 13.5pounds). In each roll, the last 450 feet have 4 inches width cordon, which can remind worker to prepare the new roll in advance.
Specifications of Bale Net:
Width of bale net: 1.23m, 1.25m, 1.28m, 1.3m, 1.5m, other size can be customized.
Length of bale net: 2000m, 3000m, 3600m, other size can be customized.
Inner Core: paper core.
G/M2: 8G/M2, 9G/M2, 9.5G/M2, 10G/M2, etc.
Inner Core Size: 3``/76mm.
Color of Bale Net: White, Green edge, Blue edge, Red edge, other colors can be customized.
Package: Bale net rolls are usually packed on pallets. The pallet size can be 1.2*1.0m, 1.1*1.1m, or other size. Bale net is stacked one by one on the pallet, and then fastened by packing belt to make them stable.
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2. The model and stocking quantity were mainly shrimp, and the cultivation pattern of Pengze was mixed. The 0.25-fold length of Macrobrachium praecosum desalinated 20,000 ducks per mu, and the mixed-breeding body was 5-7cm long.
3. Before stocking, prepare to drain the pool water 50 days before seedling clearance, remove excess silt, level the bottom of the pool, and expose to the sun for 20-30 days to plug the leak. 10-15 days before planting, disinfection and disinfection, water depth 1m, splash lime 125-250 kg / mu or bleach powder 15-20 kg / mu, kill wild fish, bacteria and parasites. In addition, 0.8 kg of trichlorfon was used per acre to kill mixed shrimp and aquatic insects. Check the pool water before releasing the seedlings, and confirm that the toxicity has passed. Fertilizers were used to cultivate natural baits (plankton) 7-10 days prior to seedlings to improve the survival rate.
4. Seedlings of Macrobrachium rosenbergii were released in May-June, and Macrobrachium rosenbergii was completely dehydrated and kept in the pond for 2-3 days. 1 month after the release of the shrimp seedlings, Pengze oyster species were stocked.
5. Feeding management
- Water quality control: The previous period (15 days after planting) is mainly water-filled, and a small amount of water is changed. In the middle and later periods, the water is frequently changed according to the water quality. Generally, the water is replaced once every 2-3 days, and the water exchange rate is 20%-40%; transparency The early stage is 20-30Cm, and the middle and late stage is 30-50cm. Each pool is equipped with l-2 aerators.
- Feed: Macrobrachium rosenbergii (15 days after laying) is mainly fed with zooplankton, with a small amount of egg tarts, tofu and so on. In the middle and late period, fresh feed (such as small fish, shellfish, etc.) is used together with compound feed. Feed 3 times a day, feed once in the morning, evening, and midnight, and set up 1-2 bait stations per pool to observe their feeding conditions. The amount of feed depends on the quality of water, weather, and food intake. Peng Peng mainly feeds on zooplankton, organic debris, etc., so there is no need to feed the feed.
6. Disease prevention and control Pengze 鲫 strong life, generally no obvious disease. Macrobrachium rosenbergii experienced bacterial black spot, fungal black shank, and filamentous algae during the experiment.
Black spot disease is taken to improve water quality, and it is splashed with 0.5ppm-0.7ppm potassium permanganate and changed 50% in 24 hours. Black leeches are splashed with 10ppm-15ppm lime, and the water exchange is increased. For the growth of filamentous algae, fertilization was used to reduce the transparency of the pool water, and 0.5 ppm-0.7 ppm copper sulfate spill was used in combination to kill the filamentous algae.
7. Peng Peng harvested until the end of December harvest. Macrobrachium rosenbergii began to be marketed in October, with a specification of about 50 fish/kg, and it was finished at the end of December (water temperature below 16°C).
Peng Zeqi and Polyculture of Macrobrachium rosenbergii
1. The selection of Macrobrachium rosenbergii in ponds requires high dissolved oxygen. Therefore, ponds with sufficient water sources, fresh water, convenient drainage and irrigation, no pollution, mud bottom or sand and mud bottom are used as breeding test pools. The pool is equipped with an intake and drainage gate, with an area of ​​5-10 acres and a water depth of 1.3-1.5m.