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为探讨生物炭作为土壤改良剂对植烟土壤养分含量的影响,以湖南烟区主要栽培品种云烟87为试验材料,通过大田试验研究了不同的生物炭用量(CK:0 kg/hm~2;T1:3 000 kg/hm~2;T2:3 750 kg/hm~2;T3:4 500kg/hm~2)下植烟土壤中的养分含量。结果表明:施用生物炭能够显著提高植烟土壤有机质、碱解氮、铵态氮及速效钾含量,且随着生物炭施用量的增加呈先升高后降低的趋势,从改良土壤肥力效果来看,生物炭施用量在3 750 kg/hm~2的水平下较为适宜。
In order to explore the effect of biochar as soil conditioner on the nutrient content of tobacco soil, Yunfu 87, a main cultivar in Hunan tobacco field, was used to study the effects of different biochar dosages (CK: 0 kg / hm ~ 2; T1: 3 000 kg / hm ~ 2; T2: 3 750 kg / hm ~ 2; T3: 4 500 kg / hm ~ 2). The results showed that application of biochar could significantly increase the content of soil organic matter, alkaline hydrolysis nitrogen, ammonium nitrogen and available potassium in tobacco soil, and then increased with the increase of biochar concentration first and then decreased. From improving soil fertility See, biochar application of 3 750 kg / hm ~ 2 level is more appropriate.