It is better not to fertilize and water on cloudy days. On cloudy days, photosynthesis is weakened, air pressure is low, and the amount of dissolved oxygen in the water is reduced. Fertilization at this time will cause the algae in the water to consume a large amount of dissolved oxygen, resulting in a lack of oxygen for shrimp. Therefore, we generally choose to fertilize and water in the morning on a sunny day.
1. Organic fertilizer.
Organic fertilizer is one of the most common fertilizers, rich in nutrients such as nitrogen, phosphorus, and potassium, which can promote the growth of algae and microorganisms, and improve water quality and fertilizer. When using, it is recommended to mix organic fertilizer with microbial inoculants to improve fertilizer efficiency. We use: multi-effect fertilizer and water pioneer, rich in a variety of amino acids and trace elements, small molecules and easy to absorb, can quickly fertilizer water.
2. Biological fertilizer.
Biofertilizer can not only provide rich nutrients, but also promote the growth and reproduction of beneficial microorganisms and improve the water quality environment. Experienced breeding friends recommend using: EM bacteria pioneer, high content and strong activity, can quickly increase beneficial microorganisms, improve the ecological environment of water bodies, and promote fertilizer and water.
3. Chemical fertilizers. Chemical fertilizers contain fast-acting nutrients such as nitrogen, phosphorus, and potassium, which can be used quickly, but frequent and large amounts of use can lead to deterioration of water quality. When using, it is necessary to strictly control the dosage and avoid excessive use.
Fourth, fertilizer usage.
According to the specific situation of the shrimp pond, the amount of fertilizer should be reasonably controlled. Avoid over-fertilization that can lead to deterioration of water quality or shrimp poisoning. In the process of fertilization, the fertilizer should be evenly sprinkled in the shrimp pond to avoid damage to the shrimp caused by excessive local concentration. At the same time, it is important to ensure that the fertilizer is well mixed with water to avoid excessive sedimentation or suspended solids. After fertilization, changes in water quality should be monitored regularly. If the water quality deteriorates or the dissolved oxygen content decreases, measures should be taken to adjust the water quality in a timely manner.