生物炭用量和粒径在烤烟生产中的应用效果评价

Evaluation of the Application Effect of Biochar Dosage and Particle Size in Tobacco Production

为明确生物炭在烟叶生产中的最佳用量和粒径,通过田间小区试验,考察生物炭粒径和肥料中生物炭的添加量分别为0.180、0.125、0.075 mm和12%、15%、18%时,对烟叶经济性状和品质性状的影响。结果表明:在粒径相同的条件下,生物炭添加量为18%处理的上等烟率和均价较添加量为12%、15%处理的均有所提高,增幅分别达16.8%和0.4%、21.8%和3.6%,熵权法综合评价总分由添加量为12%处理的0.35分提高至添加量为18%时的0.64分;在用量相同的条件下,生物炭粒径由0.180 mm减小至0.075 mm,烤烟的产值、上等烟率、均价得到逐渐改善,与添加0.180 mm处理相比,添加0.075 mm处理可显著提高中部叶化学成分的协调性,增幅为3.95分,熵权法综合评价得分也由0.26分提高至0.93分。在试验设计的变量梯度范围内,生物炭粒径和用量均会对烟叶生产产生显著影响,适当提高生物炭用量、降低其粒径,更有利于促进烟叶生产。

In order to determine the optimal dosage and particle size of biochar in tobacco production,a field plot experiment is conducted to investigate the effects of the particle size of biochar and the amount of biochar added to fertilizers at 0.180,0.125,0.075 mm and 12%,15%,18%,respectively,on the economic and quality characteristics of tobacco.The results show that under the same particle size conditions,the first-class tobacco rate and average price of the treatment with 18% biochar addition are improved compared to the treatment with 12% and 15% addition,with increases of 16.8% and 0.4%,21.8% and 3.6%,respectively.The total score of the entropy weight method comprehensive evaluation increased from 0.35 points for the treatment with 12% addition to 0.64 points for the treatment with 18%addition.Under the same addition amount,the particle size of biochar decreased from 0.180 mm to 0.075 mm,and the output value,the first-class tobacco rate,and average price of flue-cured tobacco gradually improved.Compared to the treatment with the addition of 0.180 mm,the treatment with the addition of 0.075 mm significantly improved the coordination of chemical components in the middle leaves,with an increase of 3.95 points.The comprehensive evaluation score of entropy weight method also increased from 0.26 points to 0.93 points.Both biochar particle size and dosage can significantly affect tobacco production within the variable gradient range of the experimental design.Properly increasing the amount of biochar and reducing its particle size is more conducive to promoting tobacco production.