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5 生物炭用量与土壤pH、根干重的相关系数

Table 5 Correlation factor between amount of biochar and soil pH value and dry weight of root

项目 Item	土壤层次 Soil layer (cm)	生物炭用量Amount of biochar
项目 Item	土壤层次 Soil layer (cm)	移栽后45d 45d after transplanting	移栽后60d 60d after transplanting	移栽后75d 75d after transplanting
水平层次土壤pH Soil pH value at horizontal layers	0~10	0.8723^**	0.9050^**	0.9197^**
水平层次土壤pH Soil pH value at horizontal layers	10~20	0.3311	0.2689	0.0881
水平层次根干重 Dry weight of root at horizontal layers	0~10	0.1945	0.2230	0.7152^**
水平层次根干重 Dry weight of root at horizontal layers	10~20	0.0328	0.1310	0.2412
垂直层次土壤pH Soil pH value at vertical layers	0~10	0.9911^**	0.9674^**	0.8060^**
垂直层次土壤pH Soil pH value at vertical layers	10~20	0.9933^**	0.9933^**	0.9553^**
	20~30	0.9908^**	0.9964^**	0.9538^**
垂直层次根干重 Dry weight of root at vertical layers	0~10	0.9365^**	0.9695^**	0.9855^**
垂直层次根干重 Dry weight of root at vertical layers	10~20	0.3229	0.5154^**	0.6479^**
	20~30	0.2819	0.2927	0.4280^*