龙山县不同海拔高度植烟土壤肥力特征研究

对龙山县不同海拔植烟土壤的主要肥力特征进行了研究.结果表明:该产区的土壤养分总体适宜优质烟叶生产,不同海拔植烟土壤肥力特征有较大的差异,高海拔植烟土壤有机质、有效氮、速效钾含量明显高于低海拔,中海拔各养分含量适中,低海拔有机质、有效磷、速效钾含量较低;各海拔pH值在弱酸性至中性范围之内.因此,龙山县植烟土壤在施肥管理上应因地制宜,大力推进平衡施肥技术以平衡不同海拔区域植烟土壤的肥力水平.

Fertility Characters of Tobacco Planted Soil at Different Altitudes in Longshan County

The main fertility properties of tobacco planted soil at different altitudes in Longshan County were studied in this paper.The results showed that the soil nutrients in this producing area were suitable for producing quality tobacco leaves in general;the fertility characters of tobacco planted soils at different altitudes had significant difference,such as the content of organic matter,available nitrogen (N) and available potassium (K) in tobacco planted soil at high altitude were richer than that at low altitude,the content of each nutrient was moderate and the content of organic matter,available phosphorus (P) and available K in tobacco planted soil at low altitude were lower; the pH value of tobacco planted soil at each altitude were all in the range of subacidity to neutrality.Therefore,the fertilizing management of tobacco planted soil in Longshan County should consider the local conditions and promote balanced fertilization.technique to balance the fertility levels of tobacco planted soil at different altitudes.