【摘要】 马铃薯与玉米间作是中国西南地区马铃薯生产重要的种植模式,具有促进资源利用和提高产量优势,但对于间作模式下马铃薯养分吸收积累的特性并不清楚。采用田间试验的方法,设马铃薯单作(CK)和马铃薯玉米2:2间作(T)两种种植模式,研究间作对马铃薯干物质积累量、大量元素积累、中量元素、微量元素积累的影响。结果表明,间作提高了马铃薯全生育期地上部、块茎的干物质积累量,利于干物质向块茎分配;间作增加马铃薯植株、地上部和块茎对氮素的吸收,显著增加马铃薯块茎中钾、钙、镁的积累,增加大量和中量养分在马铃薯生育后期向块茎的分配比例;间作有利于马铃薯对铁、铜、锰和锌的积累与向块茎的分配。因此马铃薯玉米2:2行比间作条件下,不仅促进马铃薯干物质积累,而且增加马铃薯对大量养分、中量养分和微量养分的吸收,有利于马铃薯生产和提高资源利用效率。更多还原

【Abstract】 Intercropping of potato and maize, as an important planting mode for potato production in southwest China, has the advantages of promoting resource utilization and increasing yield, but the characteristics of nutrient absorption and accumulation of potato under intercropping mode are not clear yet. A plot experiment, including potato monoculture and two rows of potato intercropping with two rows of maize, were conducted to study the effects of intercropping on dry matter accumulation, macronutrient accumulation, medium nutrient accumulation and micronutrient accumulation. Intercropping increased the dry matter accumulation in shoot and tuber during the whole growth period of potato, which was conducive to the distribution of dry matter to tuber. Intercropping increased the absorption of nitrogen by potato plants, shoots and tubers, significantly increased the accumulation of potassium, calcium and magnesium in potato tubers, and increased the distribution proportion of macronutrient and medium nutrients to tubers in the later stage of potato growth. Intercropping was beneficial to the accumulation and distribution of iron, copper, manganese and zinc to tubers. Therefore, potato and maize with 2 : 2 row ratio intercropping could not only promote the accumulation of dry matter, but also increase the absorption of macronutrient, medium nutrient and micronutrient, which is conducive to potato production and improve resource utilization efficiency.更多还原