土壤 (Soils), 2017, 49(3): 565 571 DOI: 10.13758/j.cnki.tr.2017.03.020 1 曲靖烤烟镁含量特征及其影响因素 1,2 2 2 2* 3 4 4 3 4 (1 410128 2 410128 3 655000 4 ( ) 650231) 3 506 4.10 g/kg (0.36 ~ 17.70 g/kg) 46.36% <4 g/kg (R 2 = 0.720 P=0.000) (4.98 g/kg) (3.82 g/kg) 2 000 mg/kg S572 A [1] ATP 20 [1] [1] [1] [2] [3] 21% [4] 50% [5] 1.317 cmol/kg 40% 0.378% 66.3% [6] 74% 76% [7] Mg 2+ 8.67 10 4 hm 2 1.8 10 5 t 1 1.1 102 42 ~ 104 49 E 24 21 ~ 27 04 N 103 km (2014YN24) (HYHH2012YL03 HYHH2016YL03) * (cnhncs@163.com) (1982 ) E-mail: zqiangli@126.com
566 49 302 km 28 904 km 2 317 (1 = 667 m 2 ) 1 800 ~ 2 100 m 1.2 GPS 667 m 2 3 506 GPS W 5 0 ~ 20 cm 1 kg 3 506 2 ~ 5 GB2635 1992 C3F 3 506 3 kg 60 ph [8] [9] 1.3 K-S (Kolmogorov-Smirnov test) SPSS17.0 [10] GS+9.0 [11] Kriging ArcGIS10.22 [12] 2 2.1 2.1.1 [1,5] 4 g/kg 2 ~ 4 g/kg 2 g/kg 1 4.10 g/kg 0.36 ~ 17.70 g/kg 47.80% K-S 55.79% 10.58% 44.21% 表 1 曲靖烤烟镁含量基本统计特征 Table 1 Mg contents in flue-cured tobacco leaves in Qujing ± (g/kg) (%) (g/kg) (%) <2 [2,4) 4 241 5.83 ± 1.69 Aa 29.05 2.50 ~ 11.50 0.00 17.43 82.57 474 5.32 ± 2.17 Bb 40.68 1.03 ~ 13.78 1.90 27.85 70.25 369 4.34 ± 1.76 Cc 40.62 1.40 ~ 12.20 2.44 47.43 50.14 245 4.07 ± 1.77 CDcd 43.57 1.47 ~ 11.86 6.53 51.43 42.04 318 3.84 ± 1.59 Dd 41.40 0.54 ~ 9.12 9.43 48.43 42.14 550 3.69 ± 1.43 Dde 38.80 0.77 ~ 12.10 9.27 59.64 31.09 335 3.57 ± 1.63 DEde 45.69 0.36 ~ 10.12 10.45 60.30 29.25 736 3.55 ± 2.17 DEe 61.16 0.60 ~ 17.70 26.49 36.96 36.55 238 3.27 ± 1.13 Ef 34.55 0.98 ~ 7.01 10.92 64.71 24.37 3 506 4.10 ± 1.96 47.80 0.36 ~ 17.70 10.58 45.21 44.21 (P<0.01) (P<0.05) 2.1.2 9 3.27 ~ 5.83 g/kg (sig.= 0. 000) 24.37% ~ 82.57%
3 567 2.1.3 ( 2) (R 2 ) 0.813 [13-14] ( 1) RMSSE 1 MSE 0 ArcGIS 53.64% 44.73% 1.63% 表 2 烤烟镁含量半方差函数模型及其插值精度 Table 2 Semi-variogram model of Mg content in flue-cured tobacco leaves and interpolation accuracy (%) (km) RMSSE MSE 0.023 1 0.035 9 64.35 0.78 0.813 0.970 0.005 RMSSE MSE n=3 506 Fig. 1 图 1 曲靖烤烟镁含量空间分布 Spatial distribution of Mg content of flue-cured tobacco in Qujing 2.2 2.2.1 1 923 m (1 187 ~ 2 901 m) (r= 0.156 P=0.000) 200 m 6 ( 3) 1 400 ~ 1 600 m 2 200 m [16] ( 2) (R 2 = 0.720 P=0.000) 2.2.2 4 6 3.91 ~ 4.96 g/kg ( F=7.349 sig.= 0.000) 表 3 海拔对烤烟镁含量的影响 Table 3 Effect of altitude on Mg content in flue-cured tobacco leaves (m) ± (g/kg) (%) (g/kg) 2 200 81 3.80 ± 2.13 C 56.17 1.10 ~ 11.18 2 000 ~ 2 200 1173 3.81 ± 1.83 C 47.98 0.54 ~ 12.00 1 800 ~ 2 000 1582 4.09 ± 1.99 B 48.68 0.36 ~ 13.78 1 600 ~ 1 800 423 4.56 ± 1.97 A 43.14 0.80 ~ 12.1 1 400 ~ 1 600 177 4.97 ± 2.05 A 41.32 1.30 ~ 17.70 <1 400 26 4.87 ± 1.52 A 31.14 2.40 ~ 8.20
568 49 图 2 烤烟镁含量与海拔的回归分析 Fig. 2 Correlation between altitude and Mg content in flue-cured tobacco leaves 4 5 6 3.82 ~ 4.98 g/kg ( F=35.637 sig.=0.000) 4 表 4 土壤质地对烤烟镁含量的影响 Table 4 Effect of soil texture on Mg content in flue-cured tobacco leaves ± (g/kg) (%) (g/kg) 93 4.96 ± 2.83 Aa 57.05 0.90 ~ 17.70 23 4.90 ± 2.16 ABab 44.16 1.10 ~ 9.60 663 4.30 ± 2.27 Bb 52.64 0.80 ~ 13.78 999 4.10 ± 1.87 Bc 45.63 0.36 ~ 12.10 1 646 3.97 ± 1.8 Bc 45.29 0.54 ~ 13.31 42 3.91 ± 2.06 Bc 52.71 0.80 ~ 8.20 表 5 土壤类型对烤烟镁含量的影响 Table 5 Mg content in flue-cured tobacco leaves under different soil types ± (g/kg) (%) (g/kg) 579 4.98 ± 2.35 Aa 47.12 0.94 ~ 17.70 49 4.75 ± 2.04 Aa 42.96 0.90 ~ 8.94 215 4.53 ± 1.71 ABab 37.65 1.40 ~ 10.30 536 3.99 ± 1.76 Bb 44.11 0.98 ~ 11.57 368 3.98 ± 1.9 Bb 47.73 0.70 ~ 12.90 1 714 3.82 ± 1.82 Bb 47.66 0.36 ~ 12.10 2.2.3 (1.97 ~ 86.55 g/kg) (r= 0.117 P=0.000) ( 3) 18.68 31.96 55.12 g/kg 3 4 <18.68 18.68 ~ 31.96 31.956 ~ 55.12 >55.12 g/kg 4.64 4.23 4.03 3.56 g/kg (R 2 = 0.677 P=0.000)( 4) 30 g/kg 2 (31.96 g/kg) [16] 2.2.4 (27.95 ~ 1 005.43 mg/kg) (r=0.369 P=0.000) 1 5 ( ) 108.63
3 569 Fig. 3 图 3 土壤有机质对烤烟镁含量影响的决策树分析 Decision tree analysis of SOM effects on Mg content in flue-cured tobacco leaves 5 (469.88 mg/kg) 2.2.5 图 4 烤烟镁含量与土壤有机质含量的回归分析 Fig.4 Correlation between SOM and Mg content in flue-cured tobacco leaves 182.25 271.89 325.12 469.88 601.81 mg/kg 6 7 <108.63 108.63 ~ 182.25 182.25 ~ 271.89 271.89 ~ 325.120 325.12 ~ 469.88 469.88 ~ 601.81 >601.81 mg/kg 2.87 3.20 3.86 4.37 4.63 5.018 5.42 g/kg (R 2 = 0.958 P=0.000)( 6) 500 mg/kg Fig. 5 图 5 曲靖土壤有效镁含量空间分布 Spatial distribution of soil available Mg in Qujing
570 49 图 6 Fig. 6 烤烟镁含量与土壤有效镁含量的回归分析 Correlation between soil available and Mg content in flue-cured tobacco leaves (r= 0.093 P=0.000) (r= 0.340 P=0.000) (r= 0.338 P=0.000) ( 7) R 2 0.281 (P=0.023) R 2 0.575 (P=0.000) 2 000 mg/kg R 2 0.971 (P=0.000) R 2 0.970 (P=0.000) Fig. 7 图 7 烤烟镁含量与土壤有效钙镁含量 土壤钙镁比及钾镁比值的回归分析 Correlation between Mg content in flue-cured tobacco leaves with soil available Ca, available Mg, Ca/Mg and K/Mg ratios 3 4.10 g/kg 53.64% ( 4.0 g/kg) 46.36% (2 ~ 4 g/kg) (<2 g/kg) (R 2 = 0.720 P=0.000) (4.98 g/kg) (3.82 g/kg) 18.68 31.96 55.12 g/kg 4 108.63 182.25 271.89
3 571 325.12 469.88 601.81 mg/kg [1],,,. [M]. :, 2000 [2],,,. [J]., 1963, 11(3): 294 305 [3],,. [J]., 2004, 41 (2): 3 4 [4],,,. [J]., 2010, 16(2): 449 456 [5],,,. [J]., 2009, 30(4): 52 55 [6],,,. [J]., 2011, 17(1): 82 83, 98 [7],,,. [J]., 2013,50(2): 388 395 [8]. [M]. :, 2000 [9]. [M]. :, 1997 [10],,. SPSS [M]. :, 2002: 110 135 [11]. [M]. :, 1999: 65 132 [12],,,. ArcGIS9 ( ) [M]. :, 2007: 463 517 [13],,,. [J]., 2011, 43(6): 897-902 [14],,,. [J]., 2015, 47(2): 318 323 [15],,,. [J]., 2016, 48(1): 159 166 [16]. [D]. :, 2011 Mg Content in Flue-cured Tobacco and Influential Factors in Qujing, China LI Qiang 1,2, ZHOU Jiheng 2, LIU Xiaoying 2, ZHANG Yiyang 2*, WANG Ruibao 3,YANG Yingming 4, CHENG Changxin 4, LIU Hualin 3, LIU Hao 4 (1 College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; 2 Tobacco Research Institute, Hunan Agricultural University, Changsha 410128, China; 3 Qujing Branch of Yunnan Provincial Tobacco Company, Qujing, Yunnan 655000, China; 4 Hongyun Honghe Tobacco (Group) Co., Ltd., Kunming 650231, China) Abstract: 3 506 samples of flue-cured tobacco leaves were collected from Qujing of Yunan Province and their Mg contents were analyzed, then decision tree analysis and regression analysis were used to study the influential factors. The results showed that Mg contents ranged from 0.36 g/kg to 17.70 g/kg with a mean of 4.10 g/kg in flue-cured tobacco leaves, and Mg contents were lower than 4.00 g/kg in 46.36% of the samples. Altitude, soil type, texture, organic matter, available potassium, available magnesium, and available calcium affected Mg content of flue-cured tobacco. Mg content of flue-cured tobacco decreased with the increase of altitude and the fining of soil texture. It was significant difference in different soil types, the highest (4.98 g/kg) in purple soil and the lowest in red soil (3.82 g/kg). Mg content decreased with the increase of SOM, gradually increased with the increase of soil available Mg and available K, and increased first and then decreased with the increase of soil available Ca. Mg content reached the highest while soil available Ca was about 2 g/kg. And Mg content decreased with the increase of soil Ca/Mg an K/Mg ratios. Key words: Flue-cured tobacco; Mg content; Influential factors; Qujing