Research And Extension On Wet Nursery Echnique Of Flue-cured Tobacco In Ankang City

Along with the modern tobacco agriculture promoting continuously and tobaccoproduction levels rising in Ankang city,the usual two stages seedling technique graduallyexposed to many problems and insufficiency,can't adapt to the new demand of development ofthe modern tobacco agriculture.This experiment research the wet nursery,floating seedbedarea and two stages seedling technique.Research seedlings quality,chbotanical characters andeconomic properties.Through the contrast analysis,wet nursery technique is suitable for theneeds of the development of modern agriculture of tobacco,it is a more advanced seedlingtechnique.At the same time,in order to ensure that the wet nursery technique in large area topromotion,we analysis and research the seed germination rate, key technology index andpromoting technology and so on,the main results are as follows:1. Wet nursery,floating seedbed area and two stages seedling technique are able tonurture need of smoke seedlings,but the smoke seedlings root of wet seedling is developed,smoke seedlings is dry conditions,smoke seedlings survival rate is higher analysis,smokeseedlings growth is strong,the field is lighter.classy smoke, medium smoke and orange smokeproportion is quite high,the economic benefit is obvious.2. Through to the contrast test and census analysis of the seed types, sowing date,pouringwater level,matrix/soil proportion,temperature control,water control,matrix loading and coverquality,in Ankang city,sowing time is probably on March6,use pregermination coating seeds,matrix/soil proportion is1/2, seeding is fully pouring water,and surface covered0.5cm thickmatrix again,prevent excessive low temperature cold and high temperature burning branch ofthe technical key points,etc.3. Through the key technology of wet nursery experimental research and analysis,weknow the wet nursery substrates and soil proportion,establish the control standard and waterflow,has been clear about the four important period of nutrient concentration and four stagesof the water control standards,and put forward four stages of the temperature and humiditycontrol requirements,carry out trim and air-pruning technology.4. We establish a set of suitable for tobacco growth environment of the wet nurserytechnique standard in Ankang city,and carry out publicity and promotion.5. According to the wet nursery technology problems and difficulties, we proposes toseedling raiser or cooperative for nursery owner,to village or group of seedling unit forminimum intensive wet nursery organization and management mode;Strengthen the seedlingwork management;Reduce the cost and risk seedling;Straighten out the relationship betweenseedling;Carry out professional seedlings,commercialization for seedlings,reduce theproduction of seedling owner risk;Establish seedling technique service management system;Improve the nursery owner management;Establish seedling promotion work thinking,andpromote the widespread wet nursery technique.In short,the wet nursery technique has many advantages,to solve the smoke seedlingsgrowth not neat,quality is poor,field growth is consistent,improve tobacco production,improve tobacco intrinsic quality,Improve flue-cured tobacco production level,promote thedevelopment of modern agriculture of tobacco.At present,the wet nursery technique iscomparatively mature,management pattern also suitable for flue-cured tobacco productionenvironment.Therefore,we should accelerate well-being flue-cured tobacco wet nurserytechnique,the popularization and application of the process,and expand the wet proportion ofseedling.