Winter fishing techniques of artificially cultivated Astragalus membranaceus

The market price of Huanghua in winter is several times higher than that in summer, so winter is the best time for the market. However, it is very difficult to catch jaundice in winter. The vast majority of farmers adopt the method of dredging and fetching leeches in the whole pond. However, this method has large labor intensity, and the jaundice is injurious and takes a long time, and it also destroys the ecological structure of Dianchi Lake. Detrimental to the production of the coming year. Here are two quick and safe traps:

Batch fishing

Operation method

Using a grass mat trapping method, prepare for the decoys before releasing the water in the early winter. Thick straw mats or turfgrasses are soaked in 5% lime solution for 24 hours, then rinsed with 2% bleach solution, and allowed to stand for 2 days. Place the above mats one by one on the mud ditch of Dianchi, sprinkle with straws and straw with a thickness of about 5 cm, spread a second layer of grass mats, and sprinkle a layer of dry straw about 10 cm thick. When the water temperature drops below 13°C, gradually drain water 6~10cm deep. When the water temperature drops to 8°C~10°C, then add a layer of straw about 20cm thick to the mud ditch, and when the temperature drops sharply, completely put it. Dry pond water, due to the "inversion layer effect" of the straw layer, the temperature is higher than the mud layer, and the muddy mud is exposed to the cold air, which can effectively introduce the astragalus to the grass pad and the two layers of grass pad. between.

Precautions

First, this method can ensure long-term stability of the Astragalus in the mud between the grass and between the mat and will not escape, if you need to maintain to the harsh winter season, but also according to the frozen condition should be further covered by insulation insulation.

Second, when collecting, do not remove the straw one time. First lay a plastic film on the side and remove the hay. When uncovering the grass, if there are more Tibetan mastiffs in the wet grass, the wet grass can be lifted together with the grass mat to the plastic film for cleaning. At the same time, the yellow-headed earthworms should be picked up with a small dip net. This method is very effective and suitable for large-scale fishing.

A small amount of fishing

Operation method

Dig a pit about 30 centimeters deep in the corner of the pond beforehand, and place fermented straw in the pit. Fermentation agent formula: 20% wheat bran, 30% dry cow dung, 30% mealworm grains, 20% distiller's grains, and brewer's yeast. Fermented straw production method: The semi-dried straw that has been disinfected and alkalinized is mixed with a starch binder (which can be replaced with rice soup) so as to be uniformly distributed. After 1 to 2 hours, the above starter was fully mixed and mixed and then scattered into the straw, and the side spread was forked with the forks to uniformly spread the yeast leaven onto the straw.

Fill the above straw into the pit and gradually place it in the pool water, covered with thick dry straw. In this way, the pit will emit a lot of heat within a few days. In order to make the straw slowly ferment and control the temperature (generally higher than the temperature under the mud, it is best not to exceed 15 °C, if the temperature already has 15 °C, it can be higher than the temperature of 2 °C ~ 3 °C), when the temperature is too high Remove some of the dry straw from the surface and cover it when the temperature is too low. Due to the high temperature in the pit, it can attract yellow crickets to enter.

Precautions

First, when you take the scorpion, you can get a batch of scutellaria by simply removing the straw in the pit. This method is more flexible and easier, and it can be used repeatedly in winter.

Second, the conditional can put a self-controlled heater in the straw, the better. The heater can also be directly connected to the water to induce heating, the effect is very good.

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