2013年重庆市石柱县植烟土壤肥力状况分析

Soil Fertility Status Analysis of Shizhu County Tobacco-growing Areas in Chongqing in 2013

为了查明重庆市石柱县现阶段土壤的养分含量状况,对烟区养分的丰缺做出评价,2013年对在石柱县7个烤烟主乡镇采集的218个植烟土壤样品进行了土壤肥力评价。结果表明,石柱县主产烟区土壤养分含量丰富,88.07%的土壤样品碱解氮含量大于100.00 mg/kg,氮素含量较充足;74.31%的土壤速效磷含量高于20.00 mg/kg,在施肥时可减少施磷量或隔年施用磷肥;50.92%的土壤速效钾含量高于200.00mg/kg,钾素含量丰富;56.88%的土壤有机质含量高于30.00 g/kg;64.22%的土壤样品偏酸性,可施生理碱加以改良;98.17%的烟田水溶性氯含量小于30.00 mg/kg,含量适宜。

In order to explore the soil fertility status of Shizhu county in Chongqing and evaluate whether the soi1 was suitable for planting tobacco, 218 soil samples were collected from the tobacco-growing areas in Shizhu county in 2013 for the evaluation of soil fertility. The results showed that the soil nutrient content was rich in the main producing areas in Shizhu county,88.07% of soil samples in alkaline hydrolysis nitrogen content was higher than 100.00 mg / kg, nitrogen content was abundant;74.31% of soil samples in available phosphorus content was higher than 20.00 mg / kg, so phosphoric fertilizer amounts could reduce or every other year application; 50.92% of soil samples in available potassium content was above 200.00 mg / kg,potassium content was rich; 56.88% of soil samples in organic matter content was higher than 30.00 g / kg; 64.22% of soil samples was meta-acid, and it could use physiological alkaline to improve it; 98.17% of soil samples in water-soluble chloride content was less than 30.00 mg / kg, content was appropriate.