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目前种草养鱼,种植的品种主要有苏丹草和黑麦草。由于这两个草种在大部分地区都已连作多年,又忽视选育,造成了草种品质退化,鲜草产量下降,抽穗期提前。出现养鱼饲草初夏(5一6月)秋末(9—10月)两个时期严重缺草。如果合理地间作套种鱼用青饲料,既可降低养鱼成本,提高鲜草产量,又能解决淡季无草的矛盾,从而保证青饲料四季的连续供应。其主要栽培方法如下: 一、9月中旬—10月初播种黑麦草黑麦草属禾本科植物。耐寒、耐荫、喜湿,再生力强。黑麦草宜采用条播,每亩用种1—1.5公斤拌以草
Currently planting grass fish, planting varieties are mainly sudangrass and ryegrass. As the two grasses have been linked for many years in most areas, neglect breeding, resulting in degradation of grass quality, fresh grass production decline, heading date ahead of schedule. Emergence of fish forage early summer (May to June) late autumn (September-October) two serious lack of grass. If intercropping intercropping fish with green fodder, can reduce the cost of fish farming, improve the yield of fresh grass, but also to solve the contradiction between off-season grass-free, thus ensuring a continuous supply of green fodder in four seasons. The main cultivation methods are as follows: First, mid-September-early October seeding rye grass ryegrass plants. Cold, shade, hi wet, strong regeneration. Rye grass should be used for broadcast, with a kind of 1-1.5 kg of grass mixed with grass