【摘要】 试验选用马铃薯品种威芋3号,采用田间试验方法,研究了薯玉传统间作模式、薯豆间作新模式下氮素形态对马铃薯产量、品质、营养吸收的影响。结果表明:薯豆间作显著提高马铃薯产量,比单作和薯玉间作分别增产17.2%、5.8%,并显著提高薯块粗蛋白含量和单株氮、钾含量,但使淀粉含量降低。与硝态氮肥相比较,铵态氮肥、酰胺态氮肥显著提高马铃薯产量,分别增产15.73%、13.49%;与其他两种形态氮肥相比,铵态氮肥显著提高了薯块的粗蛋白、Vc含量、植株氮、磷、钾含量,但显著降低了还原糖、淀粉含量。氮肥形态与间作对马铃薯粗蛋白、淀粉、还原糖、产量、单株氮、钾含量有显著的交互效应。更多还原

【Abstract】 A field experiment was carried out to research the effects of nitrogenous fertilizer forms on potato yield,quality and nutrient absorption in intercropping systems of potato and maize,and potato and kidney bean.The results showed that the yield of potato intercropping with kidney beans was significantly increased by 17.2% and 5.8%,respectively,when compared with monoculture and potato intercropping with maize.Crude protein in tuber and N and K content of plant were also significantly increased with the decrease in the content of starch.The yield of potato was significantly increased(15.73% and 13.49%,respectively) by NH4+-N and CONH2-N when compared with NO3——N.The crude protein content and vitamin C content of tubers,and concentration of NK of plant were improved by ammonium nitrogen when compared with the other two nitrogen forms,but reducing sugar and starch significantly decreased.There were significant interactive effects between nitrogen form and intercropping pattern on the yield,crude protein content,starch content,reducing sugar content,and NK concentration per potato plant.更多还原