In 2007, Xiangyang Hongze Lake Aquatic Product Development Co., Ltd. Gaojicun Aquaculture Base implemented crayfish culture in paddy fields. Two paddy fields with a total area of ​​104 acres, a total of 25330 kilograms of crayfish were harvested, 238 kilograms of carp were 420 grams/tail, rice was 42,950 kilograms, and the average output value of the mu was 5623.5 yuan, and the average profit per mu was 3679.2 yuan.
Field requirements require sufficient paddy fields, good water quality, no pollution, convenient irrigation and drainage, and good water retention performance.
The basic facilities are along the inside of the rice paddy field to dig the shrimp farming trenches, with a width of 2-5 meters, a depth of 0.7-0.8 meters, and a slope ratio of 1:2.5. If the area of ​​the plot is larger, the field trenches should be excavated in the field, and the width of the ditch 1 Meters, 0.5-0.6 meters deep. Shrimp farming and field trenches account for about 20% of the total area of ​​rice fields. And use the soil excavated in the open shrimp ditch to reinforce and increase the field ridge. Arrange drainage pipes, and install dense nets at the inlet and outlet to prevent crayfish from escaping. And surrounded by Tianshui calcium plastic plate or thick plastic film surrounded by 0.4-0.5 meters high escape wall, the root depth of 0.3 meters into the soil.
After 15 days of stocking, the sterile water cultured shrimp and shrimp seedlings were injected 0.6-0.8 meters deep, and 75 kg of lime slurry was used for disinfection and disinfection. After 1 week, 200-300 kilograms of fertilized manure fertilizer was applied per acre.
A total of 7,800 kilograms of crayfish with a specification of 150-180 tails/kg were stocked during the seasons from April to June, ensuring that more than 10,000 juvenile shrimps were stocked per acre, and 625 were found.
During the initial feeding period, the feed is mainly fed with some fish pulp and chopped small fish. The feed amount is 0.5%-1% of the total weight of the shrimp. With the gradual increase of the water temperature, the crayfish feed is mainly granules. Feed-based, early grain feeds kept roughly 35% of crude protein, feeding increased from 1% to 3%; summer and hot seasons, feeding pelleted feed, supplemented with wheat, corn and fresh water, after Mid-Autumn The main feed pellet feed, feeding gradually reduced to about 1% of the total weight of crayfish in the pool. In the summer and autumn high temperature season, continuous sunny days are selected, and appropriate application of compound fertilizers such as calcium, magnesium, and phosphate fertilizers is performed 2-3 times to promote aquatic weed growth.
The rice plantation is planted with high-quality, high-yield, lodging-resistant mid-season rice varieties. When rice is in the field, it should be lightly sunned, and the water surface can be reduced to expose the field surface. In the case of rice pest control, high-efficiency and low-toxicity pesticides should be selected. The liquid medicine should be sprayed on the rice stems and leaves as much as possible, and not sprayed into water so as to avoid crayfish pesticide poisoning. When crayfish are cultivated in paddy fields, the water depth of the paddy fields should generally be maintained at about 20 cm, except for drying in the fields.
Crawling crayfish is harvested in time according to the growth specifications of the crayfish after the yellow rice is cooked or the rice is harvested.
Pcr Real Time,Personal Pcr Syetem,Personal Pcr Real Time,Personal Real-Time Pcr Syetem
Jiangsu Dinai Bioengineering Co.,ltd. , https://www.dinaipcr.com