At present, with the rise in food prices, feed prices have risen, making fish feed costs more expensive and economic benefits falling. In order to reduce the cost of fish feed and ensure the efficiency of fish production, it is necessary to make full use of Tanggu, Chipo and short-term idle fields, and timely plant high-quality and high-yield green fodder for fish. The technical measures for planting grass and raising fish are described below. Choosing grass seeds and planting timely manner Planting grass requires high yield and ensuring grass supply all year round. Practice shows that each mu of pond is equipped with 300~400 square meters of grassland, which can ensure the need for growing fish and ensure the annual supply of forage. The spring grass is mainly composed of alfalfa and ryegrass. It is a perennial forage, sowing in spring and autumn, 80~100 square meters per mu of ponds, grass supply from the beginning of April, and harvesting 3 times by the end of June; ryegrass planted at the end of August and early September, per acre pond 80 to 100 square meters of sowing, began to supply grass in April, cut once every 25 days, can be cut 3 to 4 times, with the cricket with feeding. In the summer after October, I was able to supply grass, just in contact with Sudan grass and hybrid pennisetum. Sudan grass and hybrid pennisetum are the main varieties in summer, and the grass is planted with 150~200 square meters per acre pond, which can be planted in stages. It will be planted in early March, grass for mid-June, early in June, grass for mid-July, and grass for 70 cm. After each forage is cut, it should be fertilized in time to make it grow longer. Reasonable match stocking For the cultivation of grass and fish, the herbivorous fish should be the main fish, such as grass carp, scorpionfish, omnivorous fish such as polyculture carp, loach, stingray, pond carp, etc. The ratio should be reduced. It is necessary to enlarge the size of grass carp, which has strong feeding ability, fast growth and low mortality, which is most beneficial to increase production. Although the head of the head is slow, it has a high economic value and can swallow the debris left by grass carp. Because the food intake is not comparable to grass carp, it should be won by quantity when stocking. The cockroaches, loach, stingrays, and pond lice eat the bait, and the amount of stocking increases with the increase in yield. The stocking ratio obtained by the grazing fish and the fish manure discharged from the head lice can be relatively reduced. Strengthen feeding management The daily amount of grass can be increased or decreased according to the weather conditions, water quality, fish appetite and activities of the day. Generally, the green feed is fed from 8 to 9 am, and it is eaten at 4 to 5 in the afternoon. If it is shorter than the above time, the amount of feeding on the next day should be increased according to the amount. If the food is not finished or the weather turns bad, the next day will be reduced. The grass slag that can't be eaten should be removed in the evening of the same day, so as not to rot and consume a lot of oxygen and destroy the water quality. Planting grass to raise fish, the water depth increased by 15~20 cm, and reached the highest water level of 2~2.5 meters in mid-June. I will replenish water once every 10 days. Ponds with poor water quality or high stocking density. Each time the water exchange capacity can reach 20%~30% of the original pool water, so that the pool water is always fat, live, tender and cool, the transparency is about 30 cm, and the pH is between 7 and 8. Komatsu Swing Parts,Komatsu Swing Gearbox Parts,Komatsu Swing Motor Parts,Komatsu Excavator Swing Parts JINING SHANTE SONGZHENG CONSTRUCTION MACHINERY CO.LTD , https://www.sdkomatsuexcavatorparts.com