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利用温室大棚可以延长黄鳝养殖的生长期,实现多批次周年化连续养殖和解决越冬问题,增加苗种供应,提高黄鳝养殖产量和经济效益。分析了温室大棚在不同季节、天气、位置的水质、水草变化规律,旨在为绿色温室大棚的日常管理、黄鳝的精准养殖提供科学依据。结果表明,温室大棚增温效果明显,水温高于芋艿田环沟2~3℃,溶解氧(DO)含量低于室外菜田沟、水泥沟4.41~9.48 mg/L。网箱内平均水温比网箱外高0.14℃,而网箱养殖黄鳝引起DO降低0.2 mg/L和pH值降低0.1;池塘中间网箱营养负荷加重且pH值最低。6月大棚水体透明度高于室外环沟27 cm。水花生长势与黄鳝摄食关系密切,黄鳝摄食佳则水花生呈现嫩绿色且生长茂盛。应注意黄鳝养殖过程中的营养负荷过重问题,及时调节水体DO含量、pH值并采取水体改良措施。
Greenhouse greenhouse can prolong the growth period of eel farming, to achieve multiple batches of annualized continuous breeding and solve the problem of winter, increase the supply of seedlings, raising eel farming yield and economic benefits. The changes of water quality and waterweeds of greenhouse in different seasons, weather and location were analyzed. The aim was to provide scientific basis for the daily management of greenhouses and the precision farming of rice fields. The results showed that the effect of increasing temperature in greenhouse was obvious. The temperature of water in greenhouse was higher than that of 2 ~ 3 ℃ in the ring and the content of dissolved oxygen (DO) was 4.41 ~ 9.48 mg / L. The average water temperature inside the cage was 0.14 ℃ higher than the outside of the cage. However, the DO caused by the fish in the cage was decreased by 0.2 mg / L and the pH value was reduced by 0.1. The nutritional load of the middle cage increased and the pH was the lowest. June shed water transparency is higher than the outdoor ring groove 27 cm. Water abalone growth and eel closely related to feeding, eel feeding better water peanuts appear tender green and lush growth. Should pay attention to eel farming process of the nutritional burden of overweight problems, timely adjustment of water DO, pH value and take water improvement measures.