Yang Jianjun, secretary of Panshan County Party Committee, said that "Panshan Model" can achieve 650 kilograms per mu of rice in crab paddy fields, with an output value of 1.95 yuan per mu and a profit of 1.65438 yuan per mu; The yield of Eriocheir sinensis is 30 kg per mu, with an output value of 1.80 yuan and a profit of 1.05 yuan. The yield of beans per mu 18kg, the output value is 65 yuan, and the profit is 50 yuan. The comprehensive benefit of rice, crab and beans totals 2200 yuan. Compared with the traditional culture mode, the rice yield per mu increased by 8%, the crab yield by 20%, the 350 yuan yield per mu, the 50 yuan yield per mu, and the comprehensive benefits of rice, crab and beans increased by 800 yuan. Professor Wu Wang, the country's chief aquatic expert, commented on the "Panshan Model": rice+aquatic products = food security+food security+ecological security+increasing farmers' income+increasing enterprises' efficiency, that is, "1+ 1=5".
The comprehensive cultivation technology of rice and crab "Panshan mode" has been continuously improved and summarized, and the technical level has reached the leading level in China. With the recognition and great attention of the state, the province and the municipal government, Panshan Model, as the first paddy field fishery model in China, has been popularized all over the country. The comprehensive cultivation technology of rice and crab "Panshan mode" has reached 654.38+0.3 million mu in the main rice producing areas in northern China. Among them, Dawa County, taian county, Faku County, Liaoyang County, Shenyang City, donggang city City, Liaoyang City and other cities and counties in Liaoning Province have a demonstration and promotion area of 6,543,800 mu. In addition, through technology export, it has been extended to more than 20 provinces, cities and regions such as lankao county, Tang Haixian, Qiqihar, Jiutai, Jilin, Tongliao, Ulanhot, Xinjiang Construction Corps and Ningxia Hui Autonomous Region. More than a dozen demonstration pilots have been established, making the demonstration and promotion area in other provinces reach more than 300,000 mu. At the same time, we provided 1 10,000 Jin of high-quality crabs to these demonstration pilot units, and sent more than 10 technical backbones to these pilot units for on-site guidance all the year round. Regularly organize experts to carry out roving guidance in each pilot and provide them with technical services. It should be said that the "Panshan model" has become an effective way for local farmers to get rich.
With the "Panshan Model", Panshan County became "the first county of crab industry in China" on September 1 15.
The technical points of "Panshan Mode" summarized by Eriocheir sinensis are as follows:
1. The rice planting method is double rows in big ridges, and the conventional 9-inch one ridge is changed to 6-inch and 12-inch two ridges for interval transplanting.
2. Temporary pool for site works10m x 25mx1.0m; The annular groove is trapezoidal, with an upper opening of 1.2m, a bottom width of 0.6m and a depth of 0.5m. ..
3. Put 70~80 crabs/kg about 500 crabs in the standard density mu.
4. Stocking time: a small amount of Elodea nuttallii is cultivated in the ring ditch in late April every year, and the wintering Eriocheir sinensis is put into a temporary breeding pond disinfected with quicklime, and the fine feed is observed on time and in quantity, and then put into the field in time 15~20 days after transplanting.
5. Plant non-GMO soybeans at a distance of 7 inches.
6. Daily management
(1) water quality control: apply 5 kg/mu of quicklime to the crabs every time they shell, and sprinkle 0.6~0.8 kg/mu of activated photosynthetic bacteria after 48 hours; Deepen the water layer as much as the rice allows.
(2) Bait feeding: Crab seedlings are scattered in the temporary culture pond until early July, and are mainly fed with high-quality complete feed and small fish and shrimp; From mid-July to mid-August, the feed is mainly green feed, but also small fish, shrimp, snails and mussels; After mid-August, high-protein concentrated feed was mainly used, and new corn and new sorghum were also used.
(3) scientifically fertilizing and raising crabs; Apply organic fertilizer 100 kg per mu before rotary tillage; Slow green manure and topdressing should be applied less, and the amount of fertilizer applied each time should not exceed 3 kg/mu.
(4) Before releasing crabs for disease control, use quicklime (70kg/mu) mixed with10cm water for disinfection, and sprinkle 20kg of quicklime on each mu in the field to supplement calcium. The crabs were disinfected with 3% salt water or potassium permanganate solution before entering the pool.
(5) Monitor the ammonia nitrogen value, dissolved oxygen content, ph value and nitrite in the water at all stages of culture, and take measures such as changing water to adjust the numerical range suitable for rice growth and crab growth.