Bio-organic fertilizer is an organic fertilizer made of organic solid waste (including organic garbage, straw, human, livestock, poultry manure, cake, agricultural and sideline products and food processing) through microbial fermentation, deodorization and complete decomposition.

Rich in functional microorganisms and trace elements, it can improve soil structure, indirectly kill ascaris eggs and root nematodes, play a role in nutrition, conditioning and health care for crop growth, and make the land absorb organic matter to play a greater role.

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Effect of soil on flue-cured tobacco

Soil fertility: the level of soil fertility has a great influence on the yield and quality of tobacco, and different types of tobacco have different requirements for soil fertility. Some studies believe that flue-cured tobacco requires moderate soil organic matter content, oriental tobacco requires poor soil and low nitrogen content, and burley tobacco requires fertile soil.

If the organic matter content and fertility in the soil are too low, the growth potential of flue-cured tobacco is weak, the plants are short, the leaves are small and thin, and the yield and quality are poor due to lack of nutrition. If the soil fertility is too high, the produced flue-cured tobacco leaves are thick, the main veins are thick, the content of nitrogen compounds such as protein and nicotine is increased, and the quality is poor.

Soil pH value: The most suitable soil pH value is 5.5 ~ 7.0. The pH value of tobacco rhizosphere affects the growth, yield and quality of tobacco, mainly by affecting the growth of tobacco root system and the state, quantity and availability of nutrients in soil.

Too low soil pH will make the soil strongly acidic, which is not conducive to the growth of tobacco. If the soil pH value is too high, it will affect the absorption of iron, manganese and phosphorus by tobacco, thus showing the symptoms of element deficiency. In addition, tobacco root system has a strong self-regulation ability to rhizosphere pH value, even if the soil pH value is not in the most suitable range for tobacco plant growth, tobacco has the ability to adjust its rhizosphere pH value to a suitable range.

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