At present, there are several modes for adopting more gargle arrangements: In terms of species arrangement throughout the year, ryegrass + sudangrass + ryegrass, ryegrass + mexican corn + ryegrass are used. In the arrangement of planting area, it is determined by estimating the amount of pasture production and the number of stocks of herbivorous fish, but the ratio of planting area to water surface is generally set at 0.2-0.3:1. In areas with low planting levels and low yields, the grass area can be slightly increased. The proportion of the various species is mainly based on the number of old and larvae of herbivorous fish. If there are more species of old fishes, the planting area of ​​ryegrass (autumn sowing) is slightly larger than that of Sudan grass and so on. Conversely, the area of ​​spring sown varieties with more larvae should be more than that of autumn sowing varieties. In this way, the yield of pasture can be adapted to the feeding capacity and food intake of herbivorous fish. Second, sowing cultivation Sultan grass is usually planted from February to March, and about 2.5 kilograms of sows per 667 square meters (1 acre) can be used for on-demand and on-demand drilling. Seedling transplanting seedlings is more than twice as productive as on-demand seedlings. More than 10 grains per hole, 18 to 25 centimeters from the hole, 1 to 2 centimeters deep, and 18 to 25 centimeters apart. When the grass grows to 4 seedlings, transplanting begins, and the spacing is 6 cm 6 cm, and 4 to 6 roots per plant. After sowing, 100 kg of manure can be sprinkled every 667 square meters. Harvesting begins in May. For each harvest, 200 to 250 kilograms of manure is applied per 667 square meters. It can receive 8 to 10 times in one year, and the annual output is 7500 to 8,000 kilograms. Ryegrass is planted in early September after the beginning of autumn, sowing 1 kg per 667 m2. Can be broadcast, depth 2 to 3 cm, spacing 20 cm evenly sowing, covered with thin soil. When the seedlings grow to 4 leaves, they are transplanted with 6 to 7 centimeters per row and 7 to 8 roots per plant. The ryegrass began to be harvested in October. After each harvest, 300 to 400 kilograms of urea fertilizer or 5 to 10 kilograms of urea was applied per 667 square meters, and a total of 8 to 10 harvests were performed. The output of fresh grass per 667 square meters was over 7,500 kilograms. Some species, such as Mexican corn and other seeds, are suitable for large-scale on-demand methods and will be gradually deleted after emergence. It is best not to use transplanting methods because the seedlings return green after transplanting for a long time. If the weather is not normal, the survival rate of the seedlings will be reduced, resulting in seedlings. In order to advance the sowing and transplanting time, it is also possible to adopt the thin film seedling seedling transplanting method commonly used in vegetable planting. In short, when using different sowing and planting methods, more appropriate methods should be determined based on the different characteristics of pasture varieties and their own techniques. Third, harvest and use The purpose of planting fishery forage is to use its stems and leaves to feed fish, so it must be properly cut and utilized. Therefore, in harvesting and utilization, it is necessary to take into account both the yield and the availability of loquat leaves, both to prevent cutting green too early and to reduce the output too frequently, and also to pay attention to the fact that the plants are too tall, the stems and leaves aging and are not easy to be fish simply because of the high yield. use. Different species and harvest time, the height of harvest is different, such as the first harvest of ryegrass when the height of the plant is not more than 50 cm, after the harvest height is controlled at about 70 cm. Sudan grass and Mexican corn are used at the height of 60 cm for the first time, and should not exceed 1 m afterwards. Other species, such as Xiaomicao, bitter leeks, migratory quail, pennisetum, etc., must also grasp this principle in harvesting and utilization. In general, high stalk forage (such as dwarf grass, royal grass, elephant grass, etc.) can not be cut at a plant height of 1 m, but the coverage of forage forage is generally up to 90%. You must not cut off the stem branch that has been buried. Some species cannot be harvested on rainy days to prevent rainwater from entering the culm, causing rotted roots such as sudan grass. At the time of harvest, each species requires a few centimeters of cornice height for regeneration. After harvesting, timely fertilizer. Second, it is forbidden to cut green with a rusty tool. Rust disease is often caused by the use of rusty tools in the feed. Third, the input of feed should be scientific. Feeding of forage should be done regularly, qualitatively and quantitatively. The quantity and quality of feeding should be determined according to the size and quantity of fish. Fourth, the method of increasing the yield of fishery forage In general, for the use of forage grass, various chemical fertilizers and human and animal manure can be used for top dressing. However, fish are most sensitive to nitrogenous fertilizers, and more nitrogenous fertilizer is used, and the yield can be doubled. In addition, according to the results of my station's many years of experimentation, the use of high-grass forage and alfalfa forage for intercropping increased the amount of grass grown by 20% to 30% compared to a single grass seed. 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