The ridge indica and ditch fish is used for digging fish farming in paddy rice fields to form a three-dimensional planting system so that rice fields can increase yield, increase income and increase efficiency. Specific operating techniques are as follows: First, the choice of fish rice fields: should choose convenient irrigation and drainage, flooding can not flood, water conservation of double-season rice fields. Second, the construction of the ridge rice trench fish field: 1, the inlet and outlet with a screen net pulled, while the rat hole, soil dog hole blocked to prevent leakage and fish escape. 2. According to the area and shape of the plot, open 2-3m on the inner side of the field ridge: a word, cross or well-shaped fish ditch, 50-60cm wide, 30-40cm deep, and at the top of each ditch A 2 square meter wide pit was dug at the intersection of the ditch and trench, and the pit depth should be more than 1 meter. Third, the principle of restocking: Xiangyun Yun is an omnivorous fish, it can not be mixed with carp, tilapia or earth carp polyculture, but can be mixed with grass carp, carp, bighead fish polyculture. Fourth, the stocking specifications and the number of: a single mu can be put 12 Xiangxiang cloud seedlings 200-300 tail, mixed raising mu Xiang Yun Yun 100-150 tail, and put another grass carp or razor clam, big head fish 50-100 tail. If the summer flowers are directly introduced into paddy fields, 400-500 acres can be placed, but the individuals may be slightly smaller when arrested. Fifth, ridge rice trench management methods: 1, according to conventional farming methods for management. After the fish species is under the pond, duckweed is introduced and artificial feed is fed regularly, positioned, and quantitatively. The amount of feed fed on a daily basis is about 5% of the total fish body weight. 2. When paddy fields are sprayed with pesticides, certain types of pesticides must be carefully selected to prevent dead fish. The use of chemical fertilizers, to control the pH of the water, PH value should be between 7. 5-8. 3, in the paddy field should be the main application of farmyard fertilizer. 4. After the early rice is harvested, the fields shall be filled with water in time to increase the water body and increase feed organisms to extend the breeding growth period. VI. Methods for rearing feed scorpions, bullfish, or tilapia as feed fish may refer to this technique.
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