论文部分内容阅读
河蟹养殖,是我国新兴的一项水产养殖事业,目前各地均尚处在试养探索阶段。我省汉川县刁汊湖养殖场经过几年的实践已取得了一定的成效。1987年全场产成蟹10万公斤,占湖北全省产量的三分之一。1987年11月,我们调查7个试验点共计15亩水面,产成蟹2017公斤,平均亩产134.5公斤,亩平收入2690元;其中有2.8亩水面,平均亩产270公斤,亩平收入5400元。该场养殖河蟹的主要经验有以下四条。 1.因水制宜,确定放养方式。目前我国放养蟹苗的有精养、粗养、混养、稻田放养等四种型式。刁汊湖养殖场只有前三种放养
Crab farming is an emerging aquaculture project in China. At present, it is still in the trial and exploration stage. Hanchuan County, Hubei Province Diaohu Lake farms after several years of practice has achieved some success. In 1987, the audience produced 100,000 crabs, accounting for one-third of Hubei’s total output. In November 1987, we surveyed 7 pilot sites with a total of 15 mu of water surface to produce 2017 kilograms of crabs, with an average yield of 134.5 kilograms and an average income of 2690 yuan per mu. Among them, 2.8 mu of water had an average yield of 270 kilograms per mu and 5400 mu of mu income yuan. The main experience of farming crabs in the field have the following four. 1. Due to water should be to determine the stocking mode. Currently, there are four types of stocking crabs in our country, such as intensive cultivation, extensive cultivation, polyculture and stocking of paddy fields. Diaoyu Lake farms only the first three stocking