In order to explore the effects of biochar as soil conditioner on the nutrients of tobacco planting soil, Yunyan 87,a main cultivated variety in Hu'nan Province was used as experimental material to study the effects of different biochar application amounts (CK: 0 kg /hm~2; T1: 3 000 kg /hm~2; T2: 3 750 kg /hm~2; T3: 4 500 kg /hm~2) on soil nutrients in a field experiment. The results showed that biochar application could significantly improve the contents of soil organic matter,alkaline hydrolysis nitrogen,ammonium nitrogen and available potassium,and all of them showed an tendency of first in...
