南雄主产烟区气候、土壤状况分析

Analysis on Climate and Soil Conditions of Nanxiong Tobacco Area

该文对南雄烟区的土壤、气候状况进行了分析,结果表明:南雄烟区植烟土壤大部分呈微酸性,3种植烟土壤的有机质含量、全氮含量、水溶性氯含量处于较低水平,但碱解氮含量较丰富。其中牛肝田土壤碱解氮含量较高,而紫色土碱解氮含量较低,南雄烟区植烟土壤中土壤供磷能力强,全磷和速效磷含量均较高,缺钾土壤面积较少;南雄烟区烟季大田前期气温偏低,降雨过多,日照偏少;成熟期气温偏高,降雨量偏多且年度间变异较大,日照相对不足。南雄较低的有机质、全氮、速效氮含量,较高的钾、镁含量土壤特征以及烤烟大田前期低温、寡日照,后期强日照、高温及降雨偏少的气候特征很可能是南雄烟叶浓香型风格特色形成的重要生态基础。

In this paper, the soil and climate conditions are analyzed about Nanxiong zone, the results show that soil most is slightly acidic,three planting tobacco soil organic matter content,total nitrogen con-tent, water-soluble chloride content is relatively low, but the alkaline hydrolysis nitrogen content is rela-tively rich. Including beef liver field soil alkaline hydrolysis nitrogen content is higher, and the purple soil alkaline hydrolysis nitrogen content is low, the ability for phosphorus in the soil is rich, total phos-phorus and available phosphorus content was high,short of potassium soil area is less;Nanxiong zone at the early stage of the season field temperature is low,too much rain,sunshine is less;Mature high tem-peratures, rainfall and annual variation is larger, the more the relative lack of sunlight. Nanxiong with low content of organic matter, total nitrogen, available nitrogen, high content of potassium, magnesium, soil characteristics and flue-cured tobacco field early low temperature,few sunshine,late strong sunshine, the climate characteristics of high temperature and less rainfall is likely to be an important ecological ba-sis to form Nanxiong tobacco luzhou-flavor style characteristic.