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为了寻求影响丽江市永胜县上部烟叶质量的主要栽培制约因素,为干热河谷区域大面积生产提供指导,进行了种植密度、施钾期以及留叶数试验。结果表明:种植密度以1 111株(120 cm×50 cm)、在揭膜培土时水施钾肥75 kg/hm~2、留叶数为20片的条件下,烟株的产量最高为2 351.26 kg/hm~2,产值最高为30 448.82元/hm~2,上等烟比例最高为48.32%,均价最高位12.95元/kg,净光合速率最高为14.72 mmoL/(m~2·s)。
In order to seek the major cultivation factors that affect the quality of tobacco leaves in the upper reaches of Yongsheng County in Lijiang City, this paper provided guidance for the large-scale production in the dry-hot valley and carried out experiments on the planting density, the period of applying potassium and the number of leaves retained. The results showed that the maximum yield of tobacco plants was 2 351.26 with 1 111 (120 cm × 50 cm) planting density, 75 kg / hm 2 of water application with potash fertilizer application and 20 leaves with remaining leaves. kg / hm ~ 2, the highest output value was 30 448.82 yuan / hm ~ 2, the highest proportion of top tobacco was 48.32%, the highest average price was 12.95 yuan / kg and the highest net photosynthesis rate was 14.72 mmoL / (m ~ 2 · s) .