Method for removing hybrid algae during cultivation of gracilaria lemaneiformis

Abstract

The invention discloses a method for removing hybrid algae during cultivation of gracilaria lemaneiformis, and belongs to the technical field of cultivation of algae. The method comprises the steps of: filling a pool with cultivation wastewater, fishing gracilaria lemaneiformis growing with the hybrid algae out of a cultivation land, compressing the gracilaria lemaneiformis into the cultivation wastewater, carrying out cultivation for 10-15 hours, taking out the gracilaria lemaneiformis, rinsing the gracilaria lemaneiformis with clean water, soaking the gracilaria lemaneiformis into a nutrientsolution for 1-1.5 hours, culturing the gracilaria lemaneiformis in disinfected seawater for 7-10 days, transferring the gracilaria lemaneiformis back to the cultivation land, and continuing to carryout cultivation. The method for removing the hybrid algae is simple and efficient, the hybrid algae are suffocated by virtue of the characteristic that the hybrid algae cannot survive for a long timein an environment in which the water temperature is 17-25 DEG C and no air circulates, and meanwhile, the gracilaria lemaneiformis is cultivated by virtue of the cultivation wastewater, so that on one hand, the cultivation wastewater is purified by virtue of the gracilaria lemaneiformis, a wastewater treatment operation is omitted, on the other hand, nutrients required by growth of the gracilarialemaneiformis are supplied by virtue of the cultivation wastewater, and the cost for replenishing the nutrient solution is saved.

Description

technical field [0001] The invention relates to a method for removing miscellaneous algae in asparagus cultivation, and belongs to the technical field of seaweed cultivation. Background technique [0002] Asparagus (Gracilaria lemaneiformis) is a species of Rhodophyta, Cedaraceae, Gracilariaceae, and Gracilaria genus. C and N are the main components of the biomass formed by asparagus, so seawater can be fixed during the production process. A large amount of C, N, P, K and other major pollutants that cause eutrophication in offshore waters can effectively purify the water quality in aquaculture areas. At the same time, because of its high protein, low fat, rich in various minerals, vitamins and unsaturated fatty acids, Therefore, it is also a health food with broad development prospects. Asparagus is cold in taste, has the effects of softening and resolving phlegm, clearing away heat and diuresis, and asparagus is also the raw material for extracting agar. It can be seen that...

AI Technical Summary

Problems solved by technology

[0004] When asparagus is cultivated, a large amount of miscellaneous algae such as red hair algae and green hair algae are often attached. When these miscellaneous algae are attached to fishing gear, they can also be removed by peeling after exposure to the sun, but the miscellaneous algae attached to asparagus Algae obviously cannot be eliminated by this method, otherwise the asparagus will die, but if the asparagus is not eliminated, it will not only rob the asparagus of nutrients and sunlight, but also mix the products and affect the benefits

[0005] Due to the lack of effective elimination methods, the asparagus can only be allowed to attach to the asparagus, or be eliminated manually after harvesting, which seriously affects the development of the asparagus industry.