The Effect Of The Cultivation Model Of Double Row Combined With Ridge Water Retention On The Yields And Quality Of Tobacco

Effect on the soil temperature:when root growing period,ridge body and irrigation covered ridge of soil can raise the average temperature,were conducive to the early stage of tobacco plant growth;only for irrigation lines covered,and not covered ridge, the average temperature of ridge was low and harm for the early stage of tobacco plant growth.The ridge body temperature in the flourishing and maturation period,there was,no significant difference was discovered among the groups,without open ridge of the film after the regiment the trees,the average temperature 1℃.higher than the others.The impact on soil moisture:The double combination ridge can reduce soil moisture loss invalid effectively,enhances the average water content of the Ridge.In the whole growth period of tobacco in field,The double combination ridge may increase the ridge body relative water content about 8%averagely,in the view of the effect of the several disposals,it is good to cover the membrane in prophase and uncover later.The influence to moisture content of soil:double row combined with ridge may reduce the soil moisture effectively invalid disappearing,enhances the ridge body's average moisture content.In tobacco's big field entire period of duration,but the average enhances the ridge body relative water content about 8%,looking from the effect which several process,after earlier period duplicate ridge body membrane and group,uncovers the ridge body membrane to be good.The yields,value and physiognomic quality may be improved effectively with cultivation model of double row combined with water retention,and 17.5Kg,389.13 yuan per ace can be increased respectively.It is worse that it did not mulch film,but better that mulch on-ridge at the early stage and remove the film which is on the ridges after resettling stage.Effects on the inherent quality of tobacco are as follows:(1) The chemical composition.With double-ridge water cultivation model treatment,increased tobacco nicotine,TN,starch content only during growth period by coating processing.(2) Nitrogen-Nicotine ratio.Flue-cured tobacco Nitrogen-Nicotine ratio will be more coordinated with double-ridge water cultivation model.(3) Smoking quality of the tobacco.Compared to control,several double-ridge water cultivation can improve the quality of tobacco smoking effectively.On-film irrigation,when removing ridge film after resettle stage treatment effect is best.Overall,onofilm irrigation can significantly improve the inherent quality of tobacco.Especially,when removing ridge film after resettle stage,on-film irrigation treatment effect is best.With a double ridge water,water-saving irrigation technology cultivation,Kuanzhai Hang design,which covered water for the irrigation line width 1.1 m,spaced operation for 1.2 m,ridge-line operation Peitu high 30 cm,irrigation covered the ridge line of high 8-10cm,the entire ridge after ridge of a cover,in about 30 days after the transplant,with the weather conditions at the time,temperature,ground temperature,rainfall and a Jiemo, Jiemo only when the operation will Jiequ Ridge membrane,the film will retain irrigation, drought when the membrane irrigation water cultivation model can effectively enhance the rainfall and irrigation water use efficiency,promotion of the tobacco plant growth and development,improve the yield and quality tobacco leaf,so that the inherent chemical tobacco Components coordination,improve the quality of smoking,so that the tobacco industry to increased availability and compatibility.