4 results about "Potamogeton crispus" patented technology

The invention relates to the technical field of fresh-keeping packaging of brasenia schreberi tender shoots, in particular to a fresh-keeping packaging method and system for brasenia schreberi tender shoots. The method comprises the following steps: pretreating brasenia schreberi tender shoots to induce pore closing of the brasenia schreberi tender shoots; performing glue protection treatment to form a composite glue protection film on the surfaces of the tender shoots; loading the treated brasenia schreberi tender shoots into a tender shoot packaging box integrated with a controlled atmosphere microcapsule release unit, and sealing, so as to realize shape integrity preservation of the brasenia schreberi tender shoots; sequentially carrying out water bath and ultrahigh pressure sterilization on the sealed tender shoot packaging box; and finally, refrigerating to realize fresh-keeping packaging of the brasenia schreberi tender shoots. On the basis of a box body structure of a multi-layer composite structure, in cooperation with an inner wall anti-sticking design and a built-in controlled atmosphere microcapsule release unit system, morphological integrity preservation of brasenia schreberi tender shoots is achieved, non-acidification and chemical preservative-free high-quality preservation can be achieved in combination with glue protection treatment and gradient physical sterilization of the brasenia schreberi tender shoots, and the preservation effect of the brasenia schreberi tender shoots is improved. And the colloid retention rate is greater than 95%.

This invention discloses an experimental device for evaluating the water purification performance of constructed wetlands under low-temperature conditions, relating to the field of wastewater treatment experimental technology. The device includes an environmental chamber and multiple parallel experimental units. The environmental chamber contains a low-temperature medium, and each experimental unit includes a water storage tank, a water pump, and a substrate-filled column. The water storage tank is partially submerged in the low-temperature medium and has a support plate inside. The support plate is arranged with a layer of *Potamogeton crispus* and a layer of aquatic plants from bottom to top, separated from the upper water purification zone by an intermediate filter. The water pump, substrate-filled column, and water storage tank are connected by pipelines to form a circulating water system. By simulating a cold winter environment using the low-temperature medium, and utilizing multiple independent experimental units, the purification efficiency of different substrate and plant combinations under low-temperature conditions can be compared simultaneously, recreating the low-temperature operation scenario of natural wetlands and achieving reliable and controllable testing of the water purification performance of constructed wetlands under low-temperature conditions.

The utility model relates to the technical field of potamogeton crispus planting, disclose a kind of degradable device for potamogeton crispus stone bud planting, including hemp rope net, the interstice of the hemp rope net is hinged with several potamogeton crispus stone bud bodies;The corner of the hemp rope net is equipped with the fixing device that can be fixed to the fixing device of installation device installation;The fixing device includes the L-shaped wedge of inserting into soil through the interstice of hemp rope net.This utility model has the advantages compared with prior art in that: potamogeton crispus stone bud can be fixed in river bottom.

The invention discloses a method for breeding Australian lobsters in a rice field and an ecological breeding field, and relates to the technical field of lobster and rice symbiosis, the technical scheme covers differentiated field engineering, non-mechanized field parcels adopt a ring ditch layout shaped like a Chinese character'feng ', and mechanized field parcels adopt a ditch-free flat bottom type layout; clay covering layer laying and diversion trench blocking treatment are conducted on sandy soil and marsh geology; a three-stage filtering water inlet and drainage system and a totally-closed escape-proof net are arranged, and waterweed is planted in the ditch to form a biological filter bed. A staged feed feeding strategy is adopted in breeding management, 36% protein feed is fed in the juvenile shrimp stage, 32% protein feed is fed in the adult shrimp stage, dissolved oxygen, pH and temperature data are transmitted in real time in combination with an intelligent water quality monitoring system, and timing opening and closing and dissolved oxygen threshold triggering oxygen supplementation are achieved through an aeration linkage control module. A rotation mode of'two shrimps and one rice 'is implemented, agricultural travel fusion facilities including a fishing area and an Internet of Things base station are integrated, and a novel high-yield, efficient and ecological rice field comprehensive planting and breeding paradigm is constructed.