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我县是烤烟的集中产区之一,常年种植烤烟七万亩左右。近年来随着粮食产量的不断提高,土壤中含氮量逐年增多,氮磷钾比例严重失调,造成烤烟商品质量下降,内在品质较差。为了寻求适宜烟叶生产的肥源,增进烟叶的品质,1979年开始,开展了腐植酸氮磷钾肥料(以下简称腐肥)在烟草上的施用对改进烤烟品质的试验。并于1981—1982年进行了大面积示范,取得了显著效果。现将试验效果及应用情况综述如下:
Our county is one of the concentrated producing areas of flue-cured tobacco, planting about 70,000 mu of flue-cured tobacco all the year round. In recent years, with the continuous increase of grain output, the nitrogen content in soil increases year by year, and the proportion of N, P and K is seriously imbalanced, resulting in the decline of the quality of tobacco products and the poor intrinsic quality. In order to find suitable fertilizer sources for tobacco production and improve the quality of tobacco leaves, the experiment of improving the quality of flue-cured tobacco with nitrogen, phosphorus, potassium humic fertilizer (hereinafter referred to as fertilizer) on tobacco was carried out in 1979. In 1981-1982, a large-scale demonstration was carried out and achieved remarkable results. The test results and application are summarized as follows: