Suitability Evaluation of Flue-cured Tobacco Preceding Crops Based on Distribution of Soil Nutrients in Dali Tobacco Planting Areas

doi:10.11923/j.issn.2095-4050.cjas2023-0239

Abstract

Abstract:

To understand the suitability of different preceding crops for flue-cured tobacco production in Dali tobacco planting areas, the soil samples of wheat, barley, broad bean, rape, pea, garlic and winter fallow for five years were collected from 12 tobacco planting areas in Dali, and the soil nutrient content was determined. The membership of each nutrient index was calculated by fuzzy mathematics, and the membership of soil nutrient was used to comprehensively evaluate the suitability of preceding crop for flue-cured tobacco planting in Dali. The results showed that distribution proportion and membership degree of alkali hydrolyzed nitrogen and water-soluble chlorine content in soil suitable for tobacco growth after planting wheat were high, while the distribution proportion and membership degree of available phosphorus and available potassium content were medium. The distribution proportion and membership degree of soil alkali hydrolyzed nitrogen, available potassium, and water-soluble chlorine content suitable for tobacco growth after winter fallow were high, while the distribution proportion and membership degree of available phosphorus content were medium. The most suitable rotation mode is flue-cured tobacco and wheat and winter fallow in the Dali tobacco planting areas.

Key words: Dali, flue-cured tobacco, preceding crop suitability, soil nutrients, suitability evaluation, fuzzy mathematics, subordinate degree, crop rotation pattern

LI Junying, YANG Jinghua, ZOU Bingli, LU Yao, ZHOU Chunming, YANG Chengwei, LI Juan, ZHOU Min, ZHOU Shaosong. Suitability Evaluation of Flue-cured Tobacco Preceding Crops Based on Distribution of Soil Nutrients in Dali Tobacco Planting Areas[J]. Journal of Agriculture, 2024, 14(11): 30-34.

Figures/Tables 6

References 19

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阈值	抛物线型			S型
阈值	碱解氮	有效磷	水溶性氯	速效钾
下临界点(x₁)	30.0	5	1.0	100.0
下限最优值(x₂)	60.0	10.0	10.0
上限最优值(x₃)	120.0	20.0	30.0
上临界点(x₄)	150.0	40.0	45.0	150.0

阈值	抛物线型			S型
阈值	碱解氮	有效磷	水溶性氯	速效钾
下临界点(x₁)	30.0	5	1.0	100.0
下限最优值(x₂)	60.0	10.0	10.0
上限最优值(x₃)	120.0	20.0	30.0
上临界点(x₄)	150.0	40.0	45.0	150.0

前作作物	>150.0 mg/kg	150.0~120.0 mg/kg	120.0~60.0 mg/kg	60.0~30.0 mg/kg	<30.0 mg/kg
小麦	11.36	20.45	55.86	10.71	1.62
大麦	50.00	19.91	25.22	4.87	0
蚕豆	40.94	25.50	29.53	3.36	0.67
油菜	21.74	45.65	32.61	0	0
豌豆	7.81	18.75	60.94	12.5	0
大蒜	63.64	21.58	13.64	1.14	0
冬闲	13.11	22.56	53.96	9.76	0.61
所有前作作物	27.70	22.19	42.09	7.44	0.57

前作作物	>150.0 mg/kg	150.0~120.0 mg/kg	120.0~60.0 mg/kg	60.0~30.0 mg/kg	<30.0 mg/kg
小麦	11.36	20.45	55.86	10.71	1.62
大麦	50.00	19.91	25.22	4.87	0
蚕豆	40.94	25.50	29.53	3.36	0.67
油菜	21.74	45.65	32.61	0	0
豌豆	7.81	18.75	60.94	12.5	0
大蒜	63.64	21.58	13.64	1.14	0
冬闲	13.11	22.56	53.96	9.76	0.61
所有前作作物	27.70	22.19	42.09	7.44	0.57

前作作物	>40.0 mg/kg	40.0~20.0 mg/kg	20.0~10.0 mg/kg	10.0~5.0 mg/kg	<5.0 mg/kg
小麦	9.74	41.23	25.00	12.99	11.04
大麦	28.76	41.59	18.15	7.08	4.42
蚕豆	28.19	43.62	20.13	4.70	3.36
油菜	56.52	32.61	8.70	2.17	0
豌豆	9.38	42.19	25.00	15.63	7.80
大蒜	62.50	28.41	2.27	2.27	4.55
冬闲	20.12	34.15	25.30	13.11	7.32
所有前作作物	25.34	38.08	20.04	9.81	6.73