Effects Of Perennial Ryegrass Application On The Improvement Of Tobacco-planting Soils And The Yield And Quality Of Flue-cured Tobacco Leaves

Tobacco is Chinese important economic crop,long-term use of chemical fertilizer plant in tobacco production soil and ecological environment deterioration.Perennial ryegrass is annual gramineae monocotyledon,the regeneration ability,ability is strong,resistant to diseases and insects is an important green manure crops.This article main research ryegrass applying different application period,content and method for planting tobacco soil and quality of flue-cured tobacco production,the main research conclusions are as follows:1 Ryegrass with different period of planting tobacco soil and quality of flue-cured tobacco productionTest with no use of perennial ryegrass as control(CK),perennial ryegrass was studied with different time(10 March,April 1,April 20)on the quality of the planting tobacco soil and tobacco production,the results show that the use of perennial ryegrass can obviously improve the physical properties of the soil;Application of perennial ryegrass soil chemical properties such as pH,organic matter to some extent compared with CK,to April 1 solstice on April 20,ryegrass applied to the improved effect of soil chemical properties is best;Application of perennial ryegrass soil microbial biomass carbon and microbial biomass nitrogen biological properties such as compared with the CK significantly increased,to April 1 on soil biological character ameliorant effect is the best.After the application of perennial ryegrass tobacco plants in multi-topping maximum leaf length,leaf width,plant height,stem circumference agronomic traits were better than CK,on April 1,with the optimal use of agronomic traits of tobacco plant index;Central after each processing roast tobacco leaves of total sugar,reducing sugar,reducing sugar/total sugar and starch content were higher than CK,by applying the chemical composition of tobacco leaves on April 1,the coordination;Treatment of tobacco leaves large and medium-sized elements,Ca,P,K,Mg and trace elements Cu,Fe,Mn,Zn content compared with CK increased to some extent;Tobacco leaf production of the highest for application on April 1,the highest proportion of superior tobacco for application on April 20.On April 1,taken together,the processing of multi-topping after the agronomic traits of tobacco plant,the chemical composition of coordination has a better output performance.2 Ryegrass applying different content to plant tobacco soil fertility and quality of flue-cured tobacco productionTest with no use of perennial ryegrass as CK,ryegrass were studied applying different content(7500 kg/hm2,15000 kg/hm2,22500 kg/hm2,30000 kg/hm2)on the quality of the planting tobacco soil and tobacco production,the results show that the use of perennial ryegrass can obviously improve the fertility of the soil;Application of perennial ryegrass chemical properties such as pH,organic matter in soil to some extent compared with CK,seems to 15000 kg/hm-15000 kg/hm2 best treatment to the improved effect of soil chemical properties;Application of perennial ryegrass soil microbial biomass carbon and microbial biomass nitrogen biological properties such as compared with the CK significantly improve,applying different content treatment to 15000 kg/hm2 between on soil biological properties improve the best effect.After application of perennial ryegrass tobacco plants in multi-topping maximum leaf length,maximum leaf width,leaf area,plant height,stem circumference agronomic traits such as indicators are better than CK,of which 15000 kg/hm2 optimal agronomic traits of indicators.After each processing roast tobacco in central total sugar,reducing sugar,reducing sugar/chemical components such as total sugar were higher than CK,total nitrogen,alkali nitrogen ratio was significantly lower than CK;By 22500 kg/hm2 to roast tobacco leaf chemical components in central improvement effect after the best.Roast tobacco leaf big quantity in different processing elements,Ca,P,K,Mg,and the content of trace elements Cu,Fe and Mn were significantly increased compared with CK,B and Na content reduced indifferent degrees.Between different seems to deal with the highest output of 22500 kg/hm,the highest proportion of superior tobacco is 15000 kg/hm.Together with 15000 kg/hm2-22500 kg/hm2 ryegrass seems to deal with the tobacco plant after multi-topping agronomic characters,chemical composition and coordination in the field of the output performance is best.3 With different ways of planting tobacco soil fertility and quality of flue-cured tobacco productionTest with no use of perennial ryegrass as CK,ryegrass was studied with different methods(banding,broadcasting and holes)on the quality of the planting tobacco soil and tobacco production,the results show that the application of perennial ryegrass can obviously improve the fertility of the soil;Application of perennial ryegrass in the soil pH,organic matter,total nitrogen content of the chemical indicators such as compared with the CK all have varying degrees of increase;Application of perennial ryegrass soil microbial biomass carbon and microbial biomass nitrogen biological properties such as compared with the CK significantly improve,with holes on soil biological properties improve the best results.After the application of perennial ryegrass tobacco plants in multi-topping maximum leaf length,leaf width,plant height,stem circumference agronomic traits such as indicators are better than CK,with hole applying optimal agronomic traits of indicators.Central after various treatments of roast tobacco reducing sugar and reducing sugar/total sugar,chemical components were significantly higher than that of CK,acupuncture point of the roast tobacco leaf chemical components to improve the effect is best;Treatment of tobacco leaves large and medium-sized elements Ca,Mg,K and trace elements Cu,Fe,Zn content were significantly increased compared with control;Tobacco leaf production the highest for broadcasting,average price,the highest proportion of superior tobacco for the hole.Taken together,hole applying perennial ryegrass after processing in multi-topping agronomic characters,chemical composition in the field of the coordination and has a better output performance.