几种葡萄砧木对红地球葡萄叶柄中氮磷钾质量分数的影响

以9种葡萄砧木嫁接的红地球葡萄一年生盆栽植株为材料,研究了不同葡萄砧木对嫁接苗叶柄中N、P、K 3种大量元素质量分数水平的影响,从而筛选大量元素高效吸收和利用砧木。研究结果表明,不同葡萄砧木对嫁接苗叶柄中大量元素均有影响,5BB、1103P、140Ru、3309C、SO4、188-08、101-14等7种砧木嫁接后可显著提高红地球葡萄氮素的吸收和利用效率,5BB、188-08、101-14、1103P、SO4等5种砧木嫁接后可提高红地球葡萄磷素的吸收和利用能力,其中以5BB砧木的N和P吸收和利用能力最强;3309C、140Ru、1103P、5BB、188-08等5种砧木嫁接后可提高红地球葡萄K的吸收和利用能力,其中以3309C砧木的K吸收和利用能力最强。

Regression Analysis of Nutrient Elements between Soil and Tobacco Leaves and Their Influences on Aroma Quality of Flue-cured Tobacco

This study aimed to analyze the relationship between nutrient elements K, Ca, Mg, Cu, Mn, Zn and Fe in tobacco-planting soils and tobacco leaves from six main tobacco-producing areas, and to investigate the influences of these elements on chemical composition and aroma components in tobacco leaves. Results showed that there were certain relationship between contents of nutrient elements in tobacco-planting soils and contents of corresponding elements in tobacco leaves; various elements exhibited different influences on the aroma quality of flue-cured tobacco. Based on the actual situation of nutrient contents in soils from different tobaccoproducing areas, contents of various elements in tobacco leaves should be regulated by soil fertilization and foliar spraying, thereby improving the aroma quality of flue-cured tobacco.