Cultivating shallow ponds and mixing mudslides to generate higher incomes in aquatic production is a pattern of higher incomes。
One pool is to be selected in a well-silent location. The pool is 60 cm deep and the wall is 60 degrees. Put the bottom down. Plastic film is laid on the bottom of the pool and on the wall of the pool, which is razed with 2-3 cm thick concrete. Cement slashes were placed on the wall of the pool and sewd with cement。
2 the pool is built and then refilled, approximately 20 cm tall. Before the discharge, 500 kg of soil fertilizer, 50 kg of potassium sulphate and 20 kg of urea were dispersed evenly and evenly with the lid. When they reach the valley, they drain. Approximately 350 kg per acre with a range of 150 ~200 cm and a range of over 60 cm. Scatter forward and spray 50% more than 400-500 times more of the pharmacological fluids in order to keep them back in order to prevent decomposition. Water is pumped in time, 4-5 centimetres deep。
Schelend is grown in the same way as any other. When picking, it can wash the mud off the surface with a gun, which is simple and fast。
I'm not sure i'm going to make it
1 the growing water temperature range for mudslides is 15-30°c and the highest water temperature is 22-28°c. The pool is mixed and the drain is covered by a net in case the mud escapes。
2 the 2% salt water is to be immersed for 20 minutes or 3. 2 million units of penicillin per cubic metre for 15 minutes to prevent disease effectively. The general hydroponic density of the ponds is based on 200 ~250 kg of fish per acre and is available for 2000 ~ 3,000 tails。
3 the mud is a mosaic of fish, small plants and animals in water, microbes and organic debris, all of which are foods they like to eat. Artisanal farming can also be fed directly to aquatic insects, earthworms, maggots, ripples, snails, fish powders, wild fish meat, and ground animals. The mud is quite greedy of animal baits, and it is inappropriate to feed them too much to avoid over-eating and preventing intestinal breathing leading to death. If the animal and plant baits described above do not meet their growth needs, they may also be fed to the sediments for the exclusive expansion of particles. Artisanal farming is patrolled daily and fed twice daily: 8-9 a. M. And 4-5 p. M. The amount of bait delivered depends on water temperature. Under 20°c is 3% of fish weight, 22-28°c is 6% of fish weight, rain and hot weather are appropriately reduced by baiting, and collages are generally not fed by bait and can yield about 200 kg of acre. If baited, density can increase appropriately, with acre production of about 1,500 kg。
4 mudslides are highly resistant and very rarely ill. The general diseases are parasitic diseases, fin diseases, and printing diseases。
A. Physicopathic diseases: mainly carwheelworms, crayworms and trigenes, with infested mudslides often floating on the surface of the water and causing anxiety. Method of prevention: 0. 7 mg/l. Copper sulphate, iron sulphate (5:2) cortex spilled。
B. Barefin disease: owing to infection with bacterium, parts of the skin near the back fin fall off, white and, in serious cases, bare, non-navigated, until death. Method of prevention: 10-15 minutes of leaching with 10 ~50 mg/l of chloracin (or thycin) solution, once a day for 5 days; or 12 hours of leaching with tetracyclic solution with 10 mg/l。
C. Printed diseases: infected by a spot-producing monolithus, the stoves are generally elliptically rounded and swollen, with red spots, and the disease is mainly treated on the basis of the tail handle: 1 g bleached water per cubic metre or 2,4 g five times; or treated with bleach and bitter symphony; 1. 5 g bleached water per cubic metre on the first day, sprayed three times in the second day and used three times in a series of six days of slurry-composed slurry slurry。
Five nylons can be captured at 70 ~ 80 % at a time。
