Effects of Combined Application of Different N Levels and Soil Conditioner on Nutrient Absorption,Yield and Quality of Flue-cured Tobacco

doi:10.7668/hbnxb.2015.S1.074

Abstract

Abstract: Field experiment was carried out to study the effects of combined application of soil conditioner and nitrogen fertilizer on soil fertility and nutrient absorption,yield and quality of flue-cured tobacco.The results showed that:compared with no soil conditioner fertilizer treatments under the same N level,soil conditioner application could increase available N content during early stage and the available phosphorus and available potassium content increased by 1.1-1.8,7.5-13.6 mg/kg in the mature period respectively.The nutrient test of middle leaves analysis showed that soil conditioner application could increase the total nitrogen and phosphorus content of tobacco leaves during early stage and the potassium content in tobacco leaves increased significantly.The potassium content increased by 0.14-0.26 mg/kg in the mature period.According to the yield and output value,under the same soil application condition,the yield increased with the increase of nitrogen rate and the N3(N:82.5 kg/ha) had the highest yield(2 990 kg/ha).The output value of soil conditioner application treatments increased 1 724-3 897 yuan/ha.Compared with different treatments,the A1N2 treatment(soil conditioner+N:60 kg/ha) got the highest output value(49 677 yuan/ha),average price(17.62 yuan/kg) and proportion of superior tobacco leaves(31.49%).Chemical component analysis indicated that soil conditioner application could decrease total sugar,reducing sugar,total nitrogen and nicotine content and increased the potassium content in cured tobacco leaves.

Key words: Soil conditioner, Soil fertility, Nutrient, Economic characters, Chemical quality

CLC Number:

MAO Jia-wei, ZHANG Xiang, SI Xian-zong, LI Guo-ping, LI Liang, KONG De-hui. Effects of Combined Application of Different N Levels and Soil Conditioner on Nutrient Absorption,Yield and Quality of Flue-cured Tobacco[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(S1): 410-415. doi: 10.7668/hbnxb.2015.S1.074.

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