River crab damage preventing method for planting vallisneria natans by bottoming polyethylene mesh

A technology of polyethylene netting and bitter grass, applied in botany equipment and methods, planting substrates, plant cultivation, etc., can solve the problems of low utilization rate, pinching or uprooting, damage, etc., and achieve the doubling rate of molting Improve and increase dissolved oxygen in water and prevent damage

Inactive Publication Date: 2018-03-06
严爱平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of bitter grass is that it is easy to be pinched or uprooted by river crabs. River crabs only like to eat the white and tender part of the base of the leaves, and the utilization rate is not high.
Moreover, during the high tem...

Method used

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Embodiment Construction

[0025] The present invention is further described below by specific embodiment:

[0026] A method for planting bitter grass on the bottom of a polyethylene mesh that can prevent river crabs from being damaged is characterized in that it comprises the following steps:

[0027] (1) Clean the crab pond at the end of the year, leave about 10cm of water in the paddy field at the bottom, sprinkle the whole pond with 75-100kg of quicklime per mu, drain the pond water after 7-10 days, and dry the paddy field at the bottom. According to the requirements, divide the crab pond into a grass area and a grass-free area, and then divide the grass area into a bitter grass planting area and other aquatic plant planting areas;

[0028] (2) Apply enough base fertilizer at one time to the bitter grass planting area and other aquatic planting areas, and then properly topdress phosphorus, potassium fertilizer or aquatic plant special fertilizer according to the growth of aquatic plants. Each dosag...

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Abstract

The invention discloses a river crab damage preventing method for planting vallisneria natans by bottoming a polyethylene mesh. Newly planted vallisneria natans is protected in a way of paving a polyethylene mesh with the mesh being about 1cm*1cm in a vallisneria natans planting region on a plate field at the bottom of a crab pond, and by using the method, clamping the vallisneria natans by the river crabs is stopped, and stolons of the vallisneria natans are favorably protected, so that the vallisneria natans can be effectively prevented from being damaged by the river crabs, the normal growth of float grass is guaranteed, and the method has important promotion effects on improving the ecological environment of the pond and improving the yield and quality of the river crabs.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for planting bitter grass on the bottom of a polyethylene mesh that can prevent river crabs from being damaged. Background technique [0002] Bittergrass, also known as flat shoulder grass and noodle grass, belongs to the genus Bitterweed in the family Hydrochardaceae in botanical classification. With stolons, white, smooth. The leaves are basal, linear or band-shaped, green or slightly purple-red, with 3 sepals, varying in size, floating on the water in a boat shape, the middle one is smaller, and the middle rib is keel-shaped, extending upward like a sail. [0003] Bittergrass is a common aquatic plant in river crab breeding. It has the advantages of crab eating, high temperature resistance, and no smelly water. The crabs raised in ponds dominated by bitter grass have green belly, white belly, golden feet and red hair. The quality is better than that of other aq...

Claims

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Application Information

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IPC IPC(8): A01G20/00A01G24/44C05G1/00
Inventor 严爱平
Owner 严爱平
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