湖南花垣烟区秸秆生物炭配施量对土壤pH及烤烟根系的影响

张明发, 张胜, 滕凯, 陈前锋, 田明慧, 江智敏, 巢进, 菅攀锋, 邓小华

Effects of Fertilizing with Straw Biochar on Soil pH and Root Growth of Flue-Cured Tobacco in Huayuan, Hunan

Zhang Mingfa, Zhang Sheng, Teng Kai, Chen Qianfeng, Tian Minghui, Jiang Zhimin, Chao Jin, Jian Panfeng, Deng Xiaohua

表1 供试生物炭各原料的制备参数及基本理化性状 cm

Table 1 The preparation parameters and basic physicochemical properties of biochar were tested cm

项目 Item 材料 Material pH 制备参数 The preparation parameters 比表面积 Specific area (m2/g) C (%) N (%) NH4+-N (mg/kg) NO3--N (mg/kg) 1 玉米秸秆Corn stalk 10.78 终温450℃，保温95min 2.88 55.30 1.14 － 31.30 2 油菜秸秆Rapeseed stalk 10.30 终温450℃，保温95min 1.45 58.45 3.67 6.80 12.90 3 水稻秸秆Rice stalk 10.71 终温450℃，保温95min 7.63 47.06 0.64 － 39.00 4 无花果秸秆Fig stalk 10.94 终温450℃，保温95min 1.72 65.96 1.92 9.80 10.40