Pond culture needs clear ponds to be used every year during the spring to improve the culture environment of aquatic animals. Clear ponds are generally treated as flat ponds and clear ponds with drugs. Commonly used drugs are lime and bleach. The following two methods are analyzed.
First, clear lime pond Clear pond clear pond: the amount of 100kg ~ 200kg per mu, clear pond, first dig a few small pond around the pond, let the water flow in, then put the quicklime into the melt, do not wait for cooling immediately spilled. The next day, it was pushed with muddy mud and mixed thoroughly with pond mud. The effect was even better.
Water clear pond: 200ppm to 500ppm, will be splashed with lime, hot water and whole pond, with water clear pond can avoid pathogens and enemies when the water is added, but the amount is larger.
The advantage of quicklime clear pond is that it can not only kill pathogens and predators, but also change the acidic environment of the pond, increase the hardness of the pond water, increase the buffer capacity, and increase the water fertility. The disadvantages are that it is more labor-intensive to use, and the workload is large. In addition, it is not appropriate to use this method for water bodies with strong alkaline.
Second, bleaching powder Qingtang dry clear pond: the water level of about 10cm, 10kg ~ 15kg per mu water clear pond: the amount of 20ppm. Bleach prevention effect is also good, with less, the rapid disappearance of drug power, but because of the chlorine content of bleaching powder is not stable, the above calculated according to 30%, the general market is about 15%, or even lower. Therefore, the content must be determined before use.
The difference between the taste of purple Onion and yellow onion
Purple onions and yellow onions also have a big difference in taste. Purple onions have a lighter spicy taste and a slightly sweet taste. They can be eaten raw, but the yellow onions are particularly spicy. They cannot be eaten raw and are suitable for frying. Eat after making or making soup. In addition, the purple onion has relatively thick flesh and high juice content, while the yellow onion has very thin flesh quality and low juice content.
Onion
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