The Flue-cured Tobacco Seedling Production Techniques With Float System And Related Technical Research

The application of seedling production techniques with float system on tobacco started in 1987, there were much research on this technology both at home and abroad. Generally, float system is favorable to promoting the flue-cured tobacco to be intensified, specialized, and commercialized, transferring the production management style from traditional agriculture into modern agriculture. Also, the grow seedlings environmental terms and time can be man-adjusted. So we can cultivate the right age, sufficient, healthy strong and unanimous cigarette seedling. This Experiment probe into the prescription of the medium and nourishing oral liquid of flue-cured tobacco float system and the related technical research.. The result tell us that, The medium is the key to floating and grow seedlings, organic raw materials demand to become thoroughly decomposed completely, 15-25% of organic content, the grow seedlings medium whose Unit weight is 0.2g/cm3 can hold, keep and dredge the water better. The medium's Raw materials of No. 14 included 50% carbonization chaff, 40% oxalic acid and 10% expanded perlite. Because its draw materials is extensive, and it is economical and practically, It is good for the intensify production; the cutting size of the float system is suitable for 1/3-1/2 of the leaves, it is better to cut the leaf for 2-3 times; The best sowing time for the float system of yongzhou city is December the 10th-20th.