Linyi Flue-cured Tobcco And Intensive Seedling Technology Research

As tobacco production scale and to improve the level of socialization production, conventional tobacco seedling technique gradually exposure out more or less problems and the insufficiency, cannot adapt to the modern agricultural development of tobacco and new demands of tobacco. The experimental study of the main application of normal production, floating system tray and tray live seedling three seedling technique to smoke cigarette after transplant seedlings, and influence of tobacco, a local actual production for the best seedling technique, and carries on the related technical supporting, in order to adapt to the new situation, to promote the development of the sustainable development of tobacco production. Research results show that:1 .In seedling stage, seedling on trays way (T3) can promote seeding and root growth and increase the chlorophyll content, promote the tobacco leaf photosynthetic characteristics and to improve the enzyme activity, is more vigorous growing seedlings of seedling. After the transplant, seedling on trays way (T3) and seedling on floating system (T2) can improve the seedling slowly sprout rate, reduce seedling, promote wilting tobacco plant growth, reduce tobacco virus disease occurs, increase production quality of tobacco leaves, make the beneficial trait more coordination chemistry. But considering the cost of seedling, seedling on trays way (T3) has more advantages. Comprehensive analysis, the above indexes that seedling on tray way (T3) is more suitable for the local actual production that economic and efficient ways of seedling.2 .for the matrix, through matrix (T1) (Shandong agricultural university institute of resources and environment, offer by grass peat 60% + vermiculite 20% + perlite 20%), common compound mixing dearth of matrix retting(T2), Half commodity matrix (T3) (commodity production, Shandong agricultural university institute of resources and environment offer by grass peat 60% + vermiculite 20% + perlite 20% mixed with 6:4 Soils dispensing). according to the proportion of overburden would form the effect that contrast research in seedling stage, screening, half commodity matrix (T3) cultivation of seeding is growing fast, among agronomic characters, physiological and biochemical properties were significantly better than any other treatment. After the transplant, Half commodity matrix (T3) can shorten the time of seeding, increase the survival rate, in 30 d and 60 d agronomic characters is superior to other treatment. At the same time, use this nursery substrates of plant disease occurs less, also increase the quality, moderate price ratio and the Finest grade proportion is higher, Output value can increase, and can make the chemical composition of tobacco is more harmonious. Comprehensive analysis shows that half goods with overburden matrix (commodity matrix mixed with 6:4 Soils dispensing) is a more appropriate substrates.3. the seeding smelting technology , to shear leaves (T1), spraying paclobutrazol (T2) and root pruning (T3) three refined seedling technique, the researchers found in tobacco leaves stage spray was 6 percent paclobutrazol wetter 600 times every seven days solution spray once, for spray 2-3 times, combined with water, fertilizer and ventilation, and seedlings to agree with the main stem of elongation, promote, also make the seedlings leaves and roots more youths grow more exuberant, nutrition and physical destabilization activity, can promote the seedlings growth after transplant. And the way of handling of plant leaves make seedlings root no damage, greatly reduce the wound infection by the plant disease pathogenesis, will be beneficial to increase tobacco production and quality. By C3F tobacco sampling test and analysis, proved that using spraying paclobutrazol can processing is benefit for total sugar content, make the content of total nitrogen is stable, decrease the protein and nicotine of tobacco leaves, make a further promotion.