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近几年,滩涂贝类养殖的发展速度很快,去年达180万亩,产量超过20万吨,约占海水养殖总面积的一半,总产量的三分之一。由于政策放宽,技术有新的突破,单产不断提高,经济效率愈来愈大。从当前看,泥蚶亩产(带壳)一般可达2,500斤,亩产值1,600元,亩纯益达800元以上;一亩花蛤可产2,500斤,亩产值1,200元,亩纯益700元;一亩缢蛏可产1,700斤,亩产值700元,纯益500元,都是海水养殖中收益较高的品种。我国可养滩涂有850万亩,全部利用起来,其中就有500多万亩适宜开展贝类养殖,如亩产达1,000斤,即可达到250万吨,以五折一计,也有50万吨,即达到1990年海水养殖计划产重100万吨的一半。贝类养殖技术简便,投资省,不用饲料,
In recent years, the rapid growth of beach shellfish aquaculture reached 180 million mu last year and its output exceeded 200,000 tons, accounting for about half of the total marine aquaculture area and one third of the total output. Due to the easing of policies, new breakthroughs in technology, continuous improvement of yields and increasing economic efficiency. From now on, the mule production (shelled) generally up to 2,500 pounds, 1,600 yuan per mu, net profit of 800 yuan or more; acre clam can produce 2,500 pounds, 1,200 yuan per mu, net profit of 700 yuan ; An acre 缢 蛏 can produce 1,700 pounds, 700 yuan of output value, net profit of 500 yuan, are higher income varieties of mariculture. In our country, we can raise 8.5 million mu of tidal flats and make full use of them. Among them, more than 5 million mu are suitable for shellfish farming. For example, if it reaches 1,000 kg per mu, it can reach 2.5 million tons, with 50% , That is, half of the one million tons produced in the 1990 mariculture program. Shellfish farming technology is simple, investment province, without feed,