Current status and trends of tobacco-planting soil nutrients in Hubei Province
The chemical properties of 4 205 soil samples in the main tobacco-planting areas of Hubei Province in 2022 were analyzed,and compared with the data of tobacco-planting soils in 2011.The results showed that in 2022,the average pH of tobacco-planting soils in Hubei Province was 6.3,the organic matter content was 25.8 g/kg,and the contents of alkali-hydrolyzable nitrogen,available phosphorus and available potassium were 121.3 mg/kg,56.70 mg/kg and 351 mg/kg,respectively.Compared to 2011,the tobacco-planting soil in 2022 had acidification trend,the organic matter content was generally stable,the alkali-hydrolyzable nitrogen content generally showed a decreasing trend,and the available phosphorus and available potassium content increased.Therefore,in tobacco production,on the one hand,it is necessary to take measures to regulate soil acidity and alkalinity according to local conditions,and on the other hand,it is necessary to increase the application of organic fertilizer,promote measures such as"green manure dressing"and"deep ploughing"to improve the physicochemical properties of tobacco soils,and at the same time,adjust the ratio of special com-pound fertilizer for tobacco reasonably.
tobacco-planting soilpresent status of nutrientsevolution characteristicsHubei Province
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