Biogas slurry cultivation should not be blindly promoted

Recently, some farmer friends from Guichi District, Feixi County, and Huoshan County in Chizhou City have called in an e-mail that they have seen reports that biogas slurry can be widely used in aquaculture in some media. They can be widely promoted. Is this actually the case? ? The reporter interviewed relevant experts in the province on this issue.

Biogas slurry feed has no effect

Professor Zhou Yugang, a well-known swine expert in the province, told reporters that there are only fibers in the biogas residue, which has no special effect on pig growth. Some reports have exaggerated the effectiveness of biogas slurry, and farmers do not believe it. Even the use of biogas slurry to feed pigs can not be eager to achieve, in line with the principle of increasing from less to more, should not increase the amount of random, so as not to cause poisoning. Professor Zhou suggested that farmers use biogas residue for fertillation, especially for growing vegetables, fruits, and lotus roots.

Biogas feed cattle should not be promoted

When a reporter asked whether it was possible to use cow slurry to feed cows, Nie Haisheng, deputy director of the Provincial Animal Husbandry Promotion Station, directly denied this practice. He said that there is no accurate data for the biogas slurry residue feeding cattle in the breeding experiment, but some farmers During blind breeding, there has been a phenomenon of cow poisoning. According to the current technical conditions, some harmful elements in the biogas residue biogas slurry are still difficult to remove. If the cattle are fed, it is likely to cause bovine diarrhea poisoning. The Cheng Guanglong researcher of the Provincial Academy of Agricultural Sciences clearly opposed the use of biogas residues to feed cattle. He believes that such feeding will only lead to adverse reactions in cattle. Never use biogas residue to feed cattle. Some so-called experts promote biogas feed to cattle. It is irresponsible.

Biogas residue can feed fish

For aquaculture, the effect of biogas slurry and residue is quite obvious. Provincial Fisheries Bureau Wei Zeeng Gaogong told reporters that the biogas slurry feed can be promoted, but it is best to use aquaculture, Baiji, the effect is obvious; feeding grass carp, herring, carp, the effect is not very clear. He told reporters that biogas digesters in normal use can feed fish. As a feed for freshwater aquaculture, biogas residue is not only rich in nutrients, but also can speed up the reproduction of plankton in fish ponds, reduce oxygen consumption, and improve water quality. Commonly used biogas slurry, the surface of the water can maintain brown tea, easy to absorb light and heat, increase water temperature, combined with the pH of the biogas slurry is neutral alkali, can keep the fish pond neutral, these favorable factors can promote better growth of fish.

The biogas residue can be directly put into the pool, or it can be mixed with feed to feed the fish. The biogas slurry does not need to be separated by solid-liquid separation. Biogas slurry and biogas residue can be applied alternately or at the same time. Biogas slurry has a certain degree of reduction, and it will be better to use it for more than 34 hours after it is taken out of the digester. It should be noted that without the fully fermented biogas slurry, the application of the biogas slurry to the fish pond will consume a large amount of oxygen in the pool water, especially in the hot summer months, and it is better to use less or not.

Hydrolyzed Sponge White Powder

Sponge

Chengdu Sino Tech company , https://www.cnherbfun.cn