What medicine is used for weeding in shrimp field and how to deal with the straw in shrimp field?

Usually, 40 kg of water is sprayed with 60% butachlor 80- 100 ml per mu to control weeds in shri

What medicine is used for weeding in shrimp field and how to deal with the straw in shrimp field?

Usually, 40 kg of water is sprayed with 60% butachlor 80- 100 ml per mu to control weeds in shrimp paddy fields. The herbicide safety control agent Anfargo can be added to keep the water layer at 2-3 cm, and then fresh water is injected after 24 hours of application. It should be noted that under normal circumstances, weeding in shrimp paddy fields is generally unnecessary. If weeding is needed under special circumstances, low-toxic herbicides that have no effect on lobsters should also be selected.

1. What medicine is used for weeding in shrimp paddy fields?

1, select reagent

Generally, spraying 80- 100 ml of 60% butachlor with 40 kg of water per mu can control weeds, and adding Anfargo, which is a herbicide safety control agent. At the same time, the water layer should be kept at 2-3 cm, and fresh water should be poured after waiting for 24 hours. It should be noted that shrimp paddy fields generally do not need weeding. If weeding is necessary under special circumstances, it is necessary to use low-toxic herbicides that have no effect on lobsters.

2. Shrimp culture technology in paddy field

(1) Shrimp farm: Choose a site with good water quality, sufficient water, no pollution source and no flood.

(2) Raising shrimp seedlings: Generally, after transplanting in May, you can release 1.500-2.000 young shrimps per mu, with the size of 2-4cm.

(3) Feeding management: the paddy field is required to have enough base fertilizer, and generally the decomposed organic fertilizer is mainly applied, which can be applied to the tillage layer once before transplanting to ensure lasting fertility. Generally, topdressing 1 time per month, 5 kg of urea and compound fertilizer 10 kg can be applied per mu. When raising shrimp in rice fields, it is generally not necessary to feed them, but some animal feed can be properly fed during the peak season of shrimp growth.

(4) Daily management: patrol the pond in the morning and evening to observe the activities, feeding and growth of shrimps, and solve any abnormality immediately.

Second, how to deal with the straw in shrimp paddy field?

1. For some ponds where it is impossible to soak in fields, such as ponds where shrimp seedlings have been put, or old ponds, it is usually possible to fish out the straws in the later period when the weather is fine, or to plow the fields with a rotary root machine and press part of the straws into the soil, or to push the layer of soil where the straws are located into a small mound with a bulldozer, so that it can slowly rot and then be converted into fertilizer.

2. If the pond meets the requirements of field soaking, it generally needs to be soaked and drained in the field for about 3 times to wash away some harmful substances such as pesticides, fertilizers and rotten straws in the soil.

3. Raising shrimp in rice fields, although there is a risk that the water quality will be destroyed by rotten straw after being fed with water, a proper amount of straw can help the shrimp hide and make it grow better. Moreover, because shrimp will move and feed in the paddy field constantly, it will help to loosen the soil, live water and ventilation in the paddy field, increase the dissolved oxygen in the paddy field water and improve the yield per mu of rice. Therefore, shrimp culture in rice field can give play to the mutual benefit of rice and lobster.