Tobacco is one of the important economic crops in China. Because tobacco is a hobby, the quality of its products is particularly important. However, there is a contradiction between the yield and quality of tobacco. When tobacco production is not high, the quality is not high. When tobacco production reaches a certain level, the yield and quality of flue-cured tobacco increase at the same time, until the quality reaches its peak. If the output continues to rise, the quality continues to decline. The whole fat-suction rule of tobacco is: the absorption is low in the initial stage of growth, the absorption in the middle stage is the most, and the absorption in the later period is gradually reduced. The peak period of the absorption of tobacco plant absorption towers is 42 days to 58 days after transplanting. This shows that the quality of flue-cured tobacco must be obtained and the nutrients need to be provided early. When using tobacco seedlings, Shennong Bioorganic Fertilizer and microbial inoculants can be used as nutrient soil to cultivate strong seedlings. Bio-agents can be used for 10% ripening organic fertilizer, Shennong agricultural biological fertilizer 40%, rapeseed cake fat 30%, inorganic Fertilizer 20% as a base fertilizer applied once, the amount of 50 ~ 80 kg of mu. Shennongnong organic-inorganic compound fertilizer can also be used as base fertilizer at 50 kg/mu. 35 to 40 kg of potassium nitrate was applied per acre after 35 to 40 days of tobacco colonization. To ensure the peak demand of tobacco seedlings.
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