CATDOLL : CATDOLL: Rice is grown in rural areas and there are many snails in the fields. Does it have any impact on the rice?

1. Rice is grown in rural areas and there are many snails in the fields. Does this have any impact on the rice?

Before planting rice in the fields, the water in the rice fields must be drained. One purpose is to dry the field surface, and the other is to pick up field snails. Field snails can have a great destructive effect on the rice seedlings during the rice seedling stage.

1. The impact of field snails on rice seedlings

When grain seeds are planted in the field, the sprouts are very tender and short. They need to grow roots and stand firmly in order to grow normally. Otherwise, they will lean to one side or the other or float on the surface of the paddy field, making it difficult for them to take root and grow.

Therefore, after the millet is planted in the field, the seeds should be pressed into the mud with a flat plate. Depending on the degree of sunlight, the seeds should be dried for about 2 days. The mud should be pressed with your fingers without getting your fingers sticky. It should feel hard but also flexible. Water should be applied after the seedlings grow out.

The snails cause the greatest harm to rice during these 10 days or so. Wherever they go, the rice seedlings are scratched and cracked, affecting their normal growth.

2. Other harms of field snails to rice leaves

I live by the lake and have seen many different kinds of snails. I have even seen cases where several thousand kilograms of small snails can be caught in a single day.

Based on my observations in rice cultivation for nearly 30 years, field snails will not have as much impact on rice as pests such as rice borers and planthoppers, nor will they cause the same harm as the golden apple snail.

Also, when the rice seedlings are small, they cannot bear the weight of the snails, and the snails cannot climb onto the rice seedling leaves. Even if they do, the seedlings will bend and the snails will fall off.

After the plants grow bigger, you will hardly see many snails climbing up the stems to eat rice leaves, and in the few cases that do occur, they do not pose any major harm.

There are not many local snails that climb onto rice seedlings. The snails are the ones that really like rice seedlings. They would rather die on the rice seedlings than come down. The impact of snails on rice is mainly during the rice seedling stage. After the rice seedlings grow up, the impact of snails on rice can be ignored.

In short, Shanke’s point of view is: if we do not want to adopt the “rice + field snail” ecological breeding model to develop the industry, as far as rural rice planting is concerned, we should use manual or agricultural methods to clear the field snails in the rice fields before transplanting the rice to reduce the impact of field snails on rice planting.

Although the snails in the field are not as harmful as those pests, they can still cause some damage to rice. Because the snails will crawl onto the rice leaves, the rice will fall down because it cannot bear the damage. Therefore, some farmers will go to the fields to pick up snails.

There is no impact, but people should also prevent snails from putting pressure on rice and causing uneven growth, and carry out appropriate manual fishing.

No. But we need to distinguish between field snails and golden apple snails. Field snails will help the growth of rice because field snails will prey on microorganisms and pathogens in rice fields. This is beneficial to rice. Golden apple snails will affect rice.

2. Is it illegal to raise snails in water fields?

In your own fields you can

3. Water quality requirements for farmed snails

Living habits. Snails are gastropod mollusks that prefer to live in waters that are warm in winter and cool in summer, with soft bottom, abundant bait, and fresh water. They especially prefer to gather in places with slight currents. Snails are omnivorous, eating microorganisms and organic matter in the water or young stems and leaves of aquatic plants. Snails prefer to be active at night and eat more at night.

Site selection. The site for snail breeding should be selected in a place with sufficient water source, good water quality, humus soil and convenient transportation. It is best to have running water. The specifications of the snail pond are generally 1.5-1.6 meters wide and 10-15 meters long. It can also be based on the terrain. The pond is surrounded by ridges with a height of about 50 cm. Inlets and outlets are opened at both ends of the pond, and nets are installed to prevent snails from escaping. At the same time, aquatic plants such as wild rice stems are sparsely planted in the middle of the breeding pond, which can not only increase the land output rate, but also create a good ecological environment for the growth of snails.

Stocking and management

1. Stocking density of snails. Generally, 100-120 snails are stocked per square meter. At the same time, about 5 silver carp and bighead carp are stocked per square meter for the main breeding. The stocking time of snails is generally in March.

2. Fertilization and solution. First, add some feces to the breeding pond to cultivate plankton to provide food for the snails. The amount of fertilizer depends on the fatness of the bottom of the snail pond. After the snails are put into the pond, feed them with vegetables, rice bran, fish viscera or vegetable cakes, bean cakes, etc. Chop the vegetables and fish viscera and mix them with rice bran and other feeds before feeding. Soak the vegetable cakes, bean cakes, etc. to soften them so that the snails can eat them easily. The feeding amount depends on the feeding situation of the snails. It is generally calculated as 1%-3% of the total amount of snails, and feed once every 2-3 days. The feeding time is every morning. The feeding position does not need to be fixed, and the feed is placed separately. When the temperature is below 15℃ or above 30℃, no feeding is required.

3. Water quality adjustment. First, the snail pond should be frequently filled with new water to adjust the water quality, especially during the breeding season. It is best to keep the water flowing, especially in the hot season, and the effect of water culture is better. In spring and autumn, micro-flow water culture is better. The depth of the snail pond should be kept at about 30 cm. Second, adjust the pH of the water. When the pH value of the pond water is low, apply 0.15-0.18 kg of quicklime per square meter, once every 10-15 days, to keep the pH value of the pond water at 7-8.

4. Management of snails during winter. When the water temperature drops to 8-9℃, snails begin to hibernate. During hibernation, snails use their shells to push the soil, leaving only a small round hole on the soil surface, from which bubbles occasionally come out to breathe. Snails do not eat during the winter, but the water depth of the breeding pond still needs to be maintained at 10-15 cm. Generally, water should be exchanged every 3-4 days to maintain an appropriate oxygen content.

5. Fishing and marketing. After a year of careful breeding, the average individual snail can reach more than 10 grams. The fishing method can be dry pond fishing. When fishing, choose large snails as parent snails for breeding in preparation for breeding snails the following year. Snails are a traditional aquatic product in my country. They are tender and delicious, with a unique flavor. They are rich in protein, fat, sulfur, calcium, iron and histogenin. They are a nutritious food that is deeply favored by consumers. Farmers can obtain considerable economic benefits by breeding snails on small water surfaces or rice fields.

4. How to raise snails

How to raise snails:

Field snails like to live in aquatic environments with bottom mud rich in humus, such as lakes with lush aquatic plants, ponds, fields or slow-flowing ditches. They often feed on microorganisms and humus in the soil, phytoplankton in the water, young aquatic plants, moss, etc. They also like to eat artificial feed, such as fruits and vegetables, vegetable leaves, rice bran, wheat bran, soybean meal (cakes) and various animal scraps.