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山区由于水质清瘦,过去一直忽视底层鱼类的增产潜力,水体没有得到充分利用。广东梅县地区水产技术推广站于一九八六年开展池塘底层鱼类混养高产试验。参试面积3,200亩,分布在4个县、11个区。每个试验区都建立示范点,占参试面积的10％。根据池塘条件,分为肥水塘,一般肥水塘和瘦水塘三类。投料及饲养管理方法基本相同,但投苗密
Due to the thin water quality in the mountains, the past few years have neglected the stimulation potential of the bottom fish and the water bodies have not been fully utilized. Meixian District Fisheries Technology Promotion Station in Guangdong in 1986 to carry out the bottom pond fish polyculture high yield test. The test area of 3,200 acres, located in 4 counties, 11 districts. Each pilot area to establish demonstration sites, accounting for 10% of the test area. According to pond conditions, divided into fertilizer ponds, ponds and lean ponds generally three categories. Feeding and feeding management methods are basically the same, but investment seedlings dense