Effects of Organic Fertilizer on Root Black Rot,Yield and Quality of Flue-cured Tobacco in Qujing Tobacco Area of Yunnan Province
In order to study the effects of organic fertilizer replacing part of chemical fertilizer on soil properties,yield and quality of flue-cured tobacco in Qujing tobacco area of Yunnan Province,this experiment used field investigation statistics and conventional data analysis methods to study the effects of different organic fertilizers replacing part of chemical fertilizer on agronomic traits,disease occurrence,appear-ance quality and economic traits of flue-cured tobacco.The results showed that compared with the single application of conventional chemical fertilizer,the replacement of partial conventional chemical fertilizer with organic fertilizer could significantly improve the agronomic traits of flue-cured tobacco,reduce the occurrence of diseases,and increase the yield and output value of flue-cured tobacco. The application of organ-ic fertilizer significantly increased the plant height of flue-cured tobacco by 5.4％-11.1％,the stem circumference by 3.5％-10.6％,and the maximum leaf area by 4.6％-13.82％. The incidence of black shank and root rot was reduced by 16.7％-33.4％ and 21.9％-42.1％,re-spectively. The yield per mu was increased by 9.2％-22.0％,the yield per mu was 16.32％-30.54％,and the proportion of superior tobacco was 3.9％-6.3％. In conclusion,in Qujing tobacco-growing areas of Yunnan Province,replacing some chemical fertilizers with organic fertil-izers can increase the growth of flue-cured tobacco in the field,reduce the occurrence of diseases and increase the yield and output value of flue-cured tobacco. The results of this study can provide scientific basis for the rational application of organic fertilizer in flue-cured tobacco production.
万方数据
维普
