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为了探讨在土池中高密度养殖日本对虾 ( Penaeus japonicus Bate)的可能性 ,于 1997年8月 2 8日至 1998年 1月 4日在广西沿海土池中进行秋冬季日本对虾养殖试验。试验共设 5口虾塘 ,每口池塘面积 0 .667hm2 ,底质酸性砂质 ,池水深可达 1.8m。养殖水靠水泵抽取 ,沿进水渠道引入虾塘。1号～ 5号虾塘的养殖密度分别为 62 .4万尾 /公顷、96.0万尾 /公顷、96.0万尾/公顷、 88.8万尾 /公顷、 96.8万尾 /公顷。结果表明 ,在高密度的养殖条件下 ,日本对虾的生长速度随温度的下降和对虾个体的增大而减慢。与自然条件下生长的日本对虾相比较 ,高密度养殖试验中的日本对虾的生长缓慢得多。说明在类似的条件下进行的高密度日本对虾养殖 ,很难使日本对虾在常规养殖时间内达到较好的商品规格
In order to explore the possibility of high-density culture of Penaeus japonicus Bate in earthen ponds, Japanese shrimp farming in autumn and winter was conducted in the coastal ponds in Guangxi from August 28, 1997 to January 4, 1998. A total of five experiments shrimp ponds, each pond area of 0.6767hm2, sandy acid sandy, pool water depth up to 1.8m. Aquaculture water by pumping, along the water intake channels into the shrimp ponds. The density of shrimp ponds No. 1 to No. 5 were 624,000 ha / ha, 96.0 haema / ha, 96.0 haema / ha, 888 hawai per hectare and 968,000 hae / ha, respectively. The results showed that under the condition of high density culture, the growth rate of Japanese shrimp slowed down with the decrease of temperature and the increase of shrimp individuals. Japanese shrimp grew more slowly in high-density aquaculture compared with Japanese shrimp grown under natural conditions. This shows that under the similar conditions of high-density shrimp farming in Japan, it is difficult to make Japanese shrimp in the conventional breeding time to achieve better product specifications