How to use bio-organic fertilizer for tobacco?

How to use bio-organic fertilizer for tobacco? Tobacco is a crop with equal emphasis on yield and quality, and it has strict requirements for fertilizer. the quality of fertilization technology directly affects the growth and development of tobacco and the formation of yield and quality, thus affecting the improvement of efficiency. The whole life of tobacco can be divided into four stages: seedling stage, rosette stage, prosperous stage and mature stage. The seedling stage includes the seedling bed stage and the slow seedling stage after transplanting, during which there is little absorption of nitrogen, phosphorus and potassium. After transplanting slow seedlings in the field, the growth of stems, leaves and roots gradually accelerated, and the vegetative growth was still dominant in the rosette stage, and the demand for fertilizer and water increased significantly. From cluster to budding, tobacco plants enter a period of vigorous growth, and the critical period of leaf number, leaf area and leaf weight is also an important stage to determine yield and quality. The amount of nutrients absorbed by tobacco in the mature period is significantly reduced to avoid fertilization to facilitate timely yellowing and the formation of high-quality tobacco. In the seedling stage, it is possible to apply bio-organic fertilizer alone, with a dosage of 2 kg per square meter and sprinkled during soil preparation. There are two ways of fertilizing in the field: base fertilizer and topdressing. The base fertilizer is bio-organic fertilizer, which is applied to the soil before transplanting, with a dosage of 200 kg per mu, hole application or furrow application. Tobacco likes potash fertilizer and nitrate nitrogen fertilizer, avoid chloride ion, combine with bio-organic fertilizer and apply a certain amount of ammonium nitrate and potassium sulfate or potassium nitrate, which is beneficial to the growth and quality of tobacco. Tobacco topdressing is mainly based on the mixed application of available nitrogen fertilizer and bio-organic fertilizer, and the fertilization time is one-time topdressing in the rosette stage. Nitrogen fertilizer generally uses ammonium sulfate or urea, topdressing 5-10 kg urea or 10-15 kg ammonium sulfate per mu, combined with 40-50 kg bio-organic fertilizer, after fully mixing available nitrogen fertilizer and bio-organic fertilizer, ditch or hole application. Click to get more tobacco planting techniques click to get more flower planting techniques