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Method for using water hyacinths as resources

A water hyacinth and resource-based technology, which is applied in the direction of chemical instruments and methods, applications, climate change adaptation, etc., can solve problems such as limited suitable range, poor sustainability, and cumbersome technical operations

Inactive Publication Date: 2011-08-17
ZHEJIANG INST OF FRESH WATER FISHERIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The deficiencies of this technical scheme are: (1) technical operation is loaded down with trivial details, and engineering quantity is big, is not suitable for large water body;
The main disadvantage of this method is that the geese eat the leaves of the water hyacinth floating on the water surface, and the reproduction of the water hyacinth cannot be blocked. In addition, the management of the geese and the pollution of the feces of the geese are also another problem to be considered.
The weak point of this technical scheme is: (1) this technology does not stop the sexual reproduction of water hyacinth, and use will bring serious consequence in large water body; Huge investment and poor sustainability; (3) The suitable range is not wide, and small and medium water bodies are not suitable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] When fish fry (water flowers) enter ponds for cultivation, tender water hyacinths are added to soaked soybeans and ground into a slurry, which is thrown into the pond every day as bait for fish fry for 15 days. After 15 days, chop the water hyacinth or pulverize it with a pulverizer, gradually replace the slurry with the pulverized water hyacinth and add it to the pond, reduce the dosage of the slurry and increase the dosage of the pulverized water hyacinth every day, and then After 15 days, the crushed material of water hyacinth became the main bait for fish. The fry domesticated by this method mainly take water hyacinth as bait.

[0040] This embodiment is carried out in the special aquatic seedling base of Zhejiang Freshwater Fisheries Research Institute located in the southern suburb of Huzhou City, Zhejiang Province. The test water body is a pond of 400 square meters, and the water depth is about 130 centimeters. Put 4,000 kilograms of water hyacinth in the pond,...

Embodiment 2

[0043] The domestication method of the fish of this embodiment is the same as that of Embodiment 1. The test site is located in another 400 square meters pond of Zhejiang Freshwater Fisheries Research Institute Special Aquaculture Seed Base in the southern suburbs of Huzhou City, Zhejiang Province. The depth of water is also about 130 centimeters, and the test is carried out simultaneously with Example 1. Put 4,000 kilograms of water hyacinth in the pond, accounting for about 80% of the pond area. 16 kg each of domesticated grass carp and red-eyed trout were placed in the pond, 80 tails per kg. Grass carp and red-eyed trout were baited for 4 days before being stocked in the pond.

[0044] After 5 months, only a small amount of water hyacinth was covered in the pond, and the water hyacinth weighed 410 kilograms after being picked up, and the water hyacinth had no flowering plants. A total of 102 kilograms of grass carp and red-eyed trout were caught. Selling fish can get 102...

Embodiment 3

[0046] The domestication method of the fish of this embodiment is the same as that of Embodiment 1. The test site is located in another 400 square meter pond of the special aquatic seedling base of the Zhejiang Freshwater Fisheries Research Institute in the southern suburbs of Huzhou City, Zhejiang Province. The water depth is still about 130 centimeters, and it is carried out simultaneously with the above-mentioned embodiment. Put 3,000 kilograms of water hyacinth in the pond, accounting for about 60% of the pond area. Put 32 kilograms of domesticated triangular bream in the pond, 40 tails per kilogram. Triangle bream were de-fed for 4 days prior to stocking into the pond.

[0047] After 5 months, only small pieces of water hyacinth were covered in the pond, and the water hyacinth weighed 800 kg after being picked up, and there were a small number of flowering plants in the water hyacinth. A total of 80 kg of triangular bream were caught. Selling fish can get 800 yuan of f...

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Abstract

The invention belongs to the technical field of water body treatment, in particular relates to a method for using water hyacinths as resources. The method is to biotechnology for using water hyacinths as resources is characterized in that fish is released in a water area with grown water hyacinths, and the fish is tamed in the following steps: (1) adding water hyacinth burgeons to brewed soybeans, and grinding into pulp; (2) after fries of the fish are released in a pond for breeding, dropping the pulp obtained by Step 1 into the pond each day, and lasting for 15 days; (3) crushing the water hyacinths to obtain crushed water hyacinth feed; and (4) reducing the dropping amount of the pulp and increasing the dropping amount of the crushed water hyacinth feed each day, and lasting for 15 days. The biotechnology can effectively prevent the water hyacinths from breeding so as to obtain the goal of water hyacinth control. By arranging a net container or making a purse net with wave-calming floating beds in a eutrophic water body as well as dropping water hyacinths and tamed fish in the net container or the purse net, the effect of treating the eutrophic water body can also be achieved.

Description

technical field [0001] The invention belongs to the technical field of water body treatment, and in particular relates to a method for resource utilization of water hyacinth. Background technique [0002] Water hyacinth is also called water floating lotus, Fengmian lotus, water lotus, etc. It belongs to the family Yujiuhuaceae and the genus Hyacinth, and it is a perennial aquatic herb. Water hyacinth can be reproduced in two ways, sexual and asexual. The seeds formed by sexual reproduction can be dormant for many years under suitable conditions. New clonal plantlets grow at the tip of the stem. [0003] Water hyacinth will cause underwater plants to die without enough light, destroy the food chain of underwater animals, and cause aquatic animals to die. Water hyacinth also hinders the coming and going of ships, hinders drainage and irrigation, etc. [0004] The methods of controlling water hyacinth include physical control method, chemical control method and biological co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00A23K1/14A23K1/18A01G13/02C02F3/32A01M21/00A23K10/30A23K50/80
CPCY02A40/81Y02A40/818
Inventor 胡廷尖王雨辰宓国强练青平周志明韦肖杭
Owner ZHEJIANG INST OF FRESH WATER FISHERIES
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