CATDOLL : CATDOLL: What causes the small snails in the rice fields?

What causes the small snails in the rice fields?

This snail is called Golden Apple Snail, which has a strong reproductive capacity. Golden Apple Snails particularly like tender green seedlings. When the newly grown seedlings are damaged by Golden Apple Snails during the tillering period, the effective tillering of rice will be reduced, and the yield will naturally not be increased.

Experts suggest that picking by hand or setting up screens in diversion ditches and placing straw mats in the fields to absorb the snails can effectively prevent the snails from causing harm. The snails mainly cause harm from rice transplanting to the peak tillering stage, and generally no longer cause harm after the late tillering stage. Experts remind villagers that preventing the appearance of the snails is the key.

In addition, Director Zhang said that the seedlings must be protected in winter. Before spring planting, the water must be drained and the area must be sprinkled with tea bran or snail medicine. Dead snails must be cleared out and the soil must be dug up and buried with lime powder. This will reduce the overwintering base number and amount of golden apple snails in the second year.

Snails come in many varieties. The golden apple snails in rice fields will not make the rice "richer and longer-lived". If villagers find golden apple snails in the fields, they must not take it lightly. In addition, June is the main stage for rice to turn green and tiller, and it is also a critical period for rice growth. Villagers should especially strengthen water and fertilizer management, as well as the prevention and control of diseases and insect pests.

Because this kind of snail has a strong reproductive capacity.

How to kill the golden apple snails in the rice field?

The proliferation of golden apple snails in rice fields not only causes a reduction in rice production, but also increases farmers' investment in planting costs. The most common methods are the use of pesticides and manual catching of golden apple snails in the fields.

1. Use of pesticides: Currently, the common method to deal with golden apple snails is to use pesticides (snaprofen) to kill them. Spray them on the rice fields before transplanting rice seedlings. At this time, there is little water in the rice fields because rice seedlings are being transplanted, which is conducive to the long-term effect of pesticides. The key is to move around during transplanting (throwing seedlings) to evenly distribute the pesticides. However, long-term use of pesticides will cause golden apple snails to develop resistance, and the pesticides may no longer be effective in the future.

2. Manual removal: Although pesticides can kill most of the golden apple snails in the rice fields, some slightly larger golden apple snails have escaped by chance. In addition, it is impossible to remove all the golden apple snails near the canal, and they will follow the water flow back to the rice fields to reproduce. At this time, they can only be picked out manually. If there are many, it is not a problem to pick up dozens of kilograms per acre of field. If they are not picked up, the larger golden apple snails will lay eggs on the rice seedlings. Stare at the hole

Eggs laid by golden apple snail

How can we better remove the golden apple snails in the rice fields?

In order to reduce the use of pesticides when transplanting rice, a more efficient way is to control it through the nemesis of the snail. What is the nemesis of the snail in rural areas? Everyone knows ducks, right? Moreover, raising ducks can not only eat the snails in the rice fields, but also provide a good provider of farmyard manure.

1. Before planting rice fields: If you want to better remove the golden apple snails in the fields, especially before transplanting rice, it is recommended to raise ducks in the fields and let the ducks forage for the golden apple snails themselves. In order to eat the large golden apple snails, it is best to raise adult ducks at this time, and adult ducks forage for more food.

2. Rice seedling stage: How to clean up the golden apple snails in the rice seedling stage? It is definitely not okay to release adult ducks at this time. The ducks may even destroy the rice seedlings and affect their normal growth. Since it is the seedling stage, we can use the same method to release smaller ducks. They can eat the golden apple snails and prevent the ducks from trampling on the rice seedlings.

It is recommended to buy ducklings and raise them when the rice is transplanted, and then release them into the fields to feed on apple snails when the rice has been growing for about 20 days. The ducks are exactly 20 days old at this time (the growth cycle of ducks is about 70 days).

3. Rice seedling stage: As the rice grows taller, the ducks also grow larger. At this time, the ducks will not affect the growth of the rice fields, and can freely shuttle back and forth between the rice seedlings to find food. During this rice growth cycle, the ducks can not only forage for golden apple snails, but also scare away harmful pests by touching the rice seedlings, which can be said to kill two birds with one stone.