Crops ›› 2024, Vol. 40 ›› Issue (6): 171-178.doi: 10.16035/j.issn.1001-7283.2024.06.023

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Comprehensive Evaluation and Spatial Distribution of Soil Fertility Suitability in Changting Tobacco-Growing Area

Zhang Ying1(), Wang Haiyang1, Jiang Lin1, Guo Xueqing2, Zhong Xiaoli2, Zhang Xing2, Lu Minjiao2, Ji Xiaoming1, Yang Xiaopeng1(), Wu Shusong2   

  1. 1Tobacco College of Henan Agricultural University, Zhengzhou 450046, Henan, China
    2Longyan City Company of Fujian Provincial Tobacco Company, Longyan 362300, Fujian, China
  • Received:2023-08-22 Revised:2023-10-02 Online:2024-12-15 Published:2024-12-05

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Abstract:

In order to accurately assess the soil nutrient status of “Cuibi 1” characteristic tobacco planting in Changting tobacco-growing area in Longyan, Fujian province, 90 soil samples were collected from six planting towns of “Cuibi 1” tobacco-growing area. Eight chemical indexes were determined, including pH, organic matter, available nitrogen, etc. The suitability of soil fertility in Changting tobacco-growing area was thoroughly assessed using the fuzzy mathematics method. The results showed that the soil fertility in the sampling area was above grade IV, and the suitability index was 0.66, so the soil fertility was high. According to the present situation of soil nutrient abundance and deficiency, the grade of soil fertility was analyzed. Among the six towns, the fertility suitability grade of Guanqian was the highest, followed by Cewu, Gucheng, Xinqiao, Datong and Tongfang. As a whole, the fertilization scheme for flue-cured tobacco in Changting tobacco-growing area should adjust soil pH, control the application of nitrogen fertilizer and chlorine fertilizer, reduce phosphorus fertilizer, supplement potassium fertilizer, organic fertilizer and medium- and micro-fertilizers such as calcium and magnesium, improve the availability of various nutrients in soil, achieve precise fertilization and thus improve the quality of tobacco leaves.

Key words: Changting tobacco-growing area, Flue-cured tobacco, Cuibi 1, Soil fertility, Comprehensive evaluation, Spatial distribution

Table 1

Sampling location and number of samples"

取样地Sampling place 古城Gucheng 馆前Guanqian 童坊Tongfang 策武Cewu 新桥Xinqiao 大同Datong 总数Total
样本数Number of samples 15 15 15 15 15 15 90

Table 2

Determination methods of physical and chemical indexes of tobacco-growing soil"

项目Item 测定方法Measurement method
pH 雷磁PHS-3C型酸度计法（土液比1:2.5）
有机质
Organic matter		 重铬酸钾容量法―外加热法
碱解氮
Alkali-hydrolyzable N		 碱解扩散法
水溶性氯
Water soluble Cl		 硝酸银滴定法
速效磷Available P Bray I法
速效钾Available K 醋酸铵浸提―火焰光度法
交换性钙
Exchangeable Ca		 EDTA滴定法
交换性镁
Exchangeable Mg		 EDTA滴定法

Table 3

Nutrient content abundance and deficiency system of tobacco planting soil in Changting"

等级
Classification		 pH 有机质
Organic matter
(g/kg)		 碱解氮
Alkali-hydrolyzable
N (mg/kg)		 水溶性氯
Water soluble
Cl (mg/kg)		 速效磷
Available P
(mg/kg)		 速效钾
Available K
(mg/kg)		 交换性钙
Exchangeable
Ca (mg/kg)		 交换性镁
Exchangeable
Mg (mg/kg)
极低Extremely low <4.50 <15 <65 <5 <35 <80 <200 <25
低Low 4.51~5.50 15~25 65~100 5~15 35~45 80~150 200~400 25~50
适宜Suitable 5.51~6.50 25~35 100~180 15~25 45~55 150~220 400~600 50~100
高High 6.51~7.50 35~45 180~240 25~40 55~70 220~350 600~1000 100~200
很高Very high >7.51 >45 >240 >40 >70 >350 >1000 >200

Table 4

Membership function and inflection point value of each index"

拐点值
Inflection
point value		 抛物线型Parabola-type S型S-type
pH 有机质
Organic matter
(g/kg)		 碱解氮
Alkali-hydrolyzable
N (mg/kg)		 水溶性氯
Water soluble
Cl (mg/kg)		 速效磷
Available P
(mg/kg)		 速效钾
Available
K (mg/kg)		 交换性钙
Exchangeable
Ca (mg/kg)		 交换性镁
Exchangeable
Mg (mg/kg)
x1 4.5 15 65 15 35 80 200 25
x2 5.5 20 100 25 － － － －
x3 6.5 30 180 35 － － － －
x4 7.5 45 240 45 70 350 1000 200

Table 5

Suitability of soil fertility index membership value"

适宜性Suitability 低Low 中等Medium 适宜Suitable
分值范围Score range <0.5 0.5≤隶属度值≤0.8 >0.8

Table 6

Suitability grade of soil fertility for tobacco planting"

适宜性等级Suitability class Ⅰ级Grade I Ⅱ级Grade Ⅱ Ⅲ级Grade Ⅲ Ⅳ级Grade Ⅳ Ⅴ级Grade Ⅴ
得分范围Scoring range SFI≥0.80 0.60≤SFI<0.80 0.40≤SFI<0.60 0.20≤SFI<0.40 SFI<0.20
肥力等级Fertility degree 高 较高 中等 较低 低

Table 7

Difference analysis of soil fertility factors in different tobacco planting towns"

地点
Place		 pH 有机质
Organic matter
(g/kg)		 碱解氮
Alkali-hydrolyzable
N (mg/kg)		 水溶性氯
Water soluble
Cl (mg/kg)		 速效磷
Available P
(mg/kg)		 速效钾
Available K
(mg/kg)		 交换性钙
Exchangeable
Ca (mg/kg)		 交换性镁
Exchangeable
Mg (mg/kg)
古城Gucheng 5.77±0.21a 30.36±4.31b 163.10±29.24bc 18.43±3.88bc 44.11±16.20b 303.38±70.24a 358.93±17.17b 37.04±12.42a
馆前Guanqian 5.86±0.43a 29.21±5.36bc 179.90±53.11b 35.45±7.09a 58.45±12.66ab 217.92±64.87b 460.71±66.40a 49.02±8.61a
童坊Tongfang 5.27±0.40b 37.11±2.38a 240.10±66.11a 21.27±7.09b 58.91±8.69ab 199.56±29.99b 419.64±74.99ab 45.74±12.54a
策武Cewu 5.82±0.16a 24.07±1.99c 110.60±10.38c 18.43±3.88bc 57.21±12.63ab 201.92±49.70b 417.86±49.47ab 40.30±11.93a
新桥Xinqiao 5.88±0.13a 24.57±3.53c 165.20±52.23bc 18.42±6.34bc 56.39±10.02ab 158.78±31.50bc 392.86±19.96ab 35.95±6.21a
大同Datong 6.07±0.42a 26.48±5.35bc 151.90±26.14bc 12.76±5.93c 63.10±6.16a 123.48±32.91c 371.43±28.67b 34.86±6.21a

Table 8

Characteristics of soil nutrient content and membership degree"

指标
Index		 养分含量总体特征
Overall characteristics of nutrient content		 指标隶属度
Index membership
均值±
标准差
Mean±SD		 峰度
Kurtosis		 偏度
Skewness		 适宜比例Suitable ratio (%) 均值±
标准差
Mean±SD		 峰度
Kurtosis		 偏度
Skewness		 适宜性Suitable (%)
低
Low		 较低
Lower		 适宜
Suitable		 较高
Higher		 高
High		 低
Low		 中等
Medium		 适宜
Suitable
pH 5.78±0.38 1.40 -0.36 0.00 20.00 76.67 3.33 0.00 0.97±0.08 6.00 -2.45 0.00 16.67 83.33
有机质Organic matter (g/kg) 28.63±5.81 -0.92 0.28 0.00 36.67 46.67 16.67 0.00 0.93±0.17 5.95 -2.44 0.00 16.67 83.33
碱解氮
Alkali-hydrolyzable N (mg/kg)		 168.47±55.98
 0.19
 1.05
 0.00
 3.33
 70.00
 10.00
 17.00
 0.85±0.37
 6.00
 -2.45
 16.67
 0.00
 83.33
速效磷Available P (mg/kg) 56.36±12.06 -0.10 -0.50 6.67 6.67 33.33 33.33 20.00 0.65±0.17 4.92 -2.12 16.67 66.67 16.67
速效钾Available K (mg/kg) 200.84±72.20 0.49 0.81 3.33 16.67 50.00 23.33 6.67 0.50±0.20 3.81 -1.70 16.67 66.67 16.67
水溶性氯
Water soluble Cl (mg/kg)		 20.80±8.92
 0.70
 0.91
 43.33
 30.00
 16.67
 10.00
 0.00
 0.49±0.29
 0.85
 0.56
 66.67
 16.67
 16.67
交换性钙
Exchangeable Ca (mg/kg）		 403.57±55.80
 0.35
 1.07
 0.00
 50.00
 50.00
 0.00
 0.00
 0.34±0.04
 1.09
 -0.26
 100.00
 0.00
 0.00
交换性镁
Exchangeable Mg (mg/kg）		 40.49±10.58
 -0.02
 0.37
 6.67
 76.67
 16.67
 0.00
 0.00
 0.19±0.03
 -2.07
 -0.05
 100.00
 0.00
 0.00

Table 9

Weight of soil fertility evaluation indicators"

指标
Index		 抛物线型Parabola-type S型S-type
pH 有机质
Organic matter
(g/kg)		 碱解氮
Alkali-hydrolyzable
N (mg/kg)		 水溶性氯
Water soluble
Cl (mg/kg)		 速效磷
Available
P (mg/kg)		 速效钾
Available
K (mg/kg)		 交换性钙
Exchangeable
Ca (mg/kg)		 交换性镁
Exchangeable
Mg (mg/kg)
公因子方差
Common factor variance		 0.518 0.703 0.803 0.706 0.608 0.552 0.764 0.608
权重Weight (%) 14.13 11.44 12.55 14.29 11.70 9.25 13.41 13.22

Table 10

Evaluation of soil quality grades in different tobacco planting areas"

取样地Sampling place 古城Gucheng 馆前Guanqian 童坊Tongfang 策武Cewu 新桥Xinqiao 大同Datong 全部Total
SFI值SFI value 0.61 0.73 0.49 0.64 0.61 0.59 0.66
适宜性等级Suitability class Ⅱ级 Ⅱ级 Ⅲ级 Ⅱ级 Ⅱ级 Ⅲ级 Ⅱ级

Table 11

The contents of main chemical components in tobacco leaves %"

地点Place 总糖Total sugar 还原糖Reducing sugar 烟碱Nicotine 总氮Total nitrogen 淀粉Amylum 钾K 氯Cl
古城Gucheng 38.21±2.01bc 24.04±1.89c 1.48±0.46b 1.43±0.15bc 5.99±1.95ab 2.77±0.36a 0.06±0.02b
馆前Guanqian 39.25±1.43ab 23.72±2.38c 1.56±0.49b 1.40±0.10bc 6.24±1.79ab 2.66±0.37ab 0.06±0.02b
童坊Tongfang 39.83±0.41a 27.68±2.08a 1.66±0.34b 1.48±0.14b 5.46±1.60ab 2.36±0.34c 0.08±0.06b
策武Cewu 36.86±2.09d 25.77±2.11b 2.43±0.43a 1.65±0.12a 5.04±0.81b 2.85±0.34a 0.13±0.06a
新桥Xinqiao 37.53±2.28cd 22.82±1.86c 1.62±0.41b 1.43±0.10bc 6.43±1.59a 2.87±0.37a 0.05±0.01b
大同Datong 39.36±1.26ab 27.57±2.90a 1.51±0.35b 1.33±0.11c 6.64±1.35a 2.42±0.40bc 0.08±0.06b
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