Effects of biochar-based organic fertilizer on inorganic nitrogen composition in tobacco-growing soil under drip irrigationChinese Full TextEnglish Full Text (MT)
FAN Pengfei;LIU Wen;REN Tianbao;CHEN Jing;LIU Yingjie;WANG Shengwei;YUAN Xiaojing;LIU Guoshun;College of Tobacco/Henan Biochar Engineering Research Center, Henan Agricultural University;Henan Biochar Engineering Technology Research Center;Zhengzhou City Tobacco Company of Henan Province;Henan Huinong Soil Conservation Research and Development Co., Ltd.;
Abstract: In order to explore the effects of different biochar-based fertilizer application amount on soil nitrogen component in tobacco plant under drip irrigation, a new way of resource-saving and environment-friendly nitrogen reduction was explored. A field experiment was conducted under the conditions of drip irrigation and nitrogen reduction. The experimental groups with 600 kg·hm-2, 1 200 kg·hm-2 and 1 800 kg·hm-2 of biochar-based fertilizer were applied to analyse the nitrogen component in tobacco-growing soils. The results showed that compared with the control treatment（CK）, the biochar-based fertilizer with medium and high addition amount could delay the leaching time of nitrate nitrogen and significantly increase the content of nitrate nitrogen in soil. Compared with the control group, the application of biochar-based fertilizer under drip irrigation could significantly increase the ammonium nitrogen, alkaline hydrolyzed nitrogen, inorganic nitrogen and total nitrogen contents in the middle and late stage of transplanting, and the T3 treatment could increase by 66.59%, 36.17%, 59.4% and 58.8%, respectively. Under the condition of reducing nitrogen by 50%, the agronomic traits of the treatments with biochar base fertilizer under drip irrigation were basically higher than those of the control treatment. The application of biochar base fertilizer under drip irrigation could improve the leaf area of 45 d to 90 d after transplanting, and meet the needs of high yield of tobacco plants.
- DOI：
10.16445/j.cnki.1000-2340.2020.05.002
- Series：
(D) Agriculture
- Subject：
Fundamental Science of Agriculture; Agronomy; Crop
- Classification Code：
S572;S153.6
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