【摘要】 研究了施氮量对不同花生品种生长和干物质积累的影响。结果表明,施用氮肥可促进花生的生长和干物质积累,不同品种对氮肥的响应存在明显差异,当施氮量为N 112.5 kg/hm2时,白沙1016和鲁花12号的总分枝数和结果枝数达到最大值,而远杂9102达到最大值时需要的施氮量仅为N 75 kg/hm2。花生干物质总量的积累动态符合"S"曲线,结荚期是总干物质积累最快的时期,茎叶干物质积累量占其总干物质重比例以花针期最高,根干重以结荚期最高,饱果成熟期荚果干重占总干重的44.9%~49.5%。白沙1016生育前期和生育后期干物质总量最高值分别出现在N75 kg/hm2和N 112.5 kg/hm2,远杂9102在N 75 kg/hm2,鲁花12号在N 112.5 kg/hm2。3个品种株高、总分枝、结果枝、侧枝长和干物质总量由高到低顺序为远杂9102>白沙1016>鲁花12号。更多还原

【Abstract】 A pot experiment was conducted to study effect of nitrogen rate on growth and dry matter accumulation of various peanut cultivars.The result indicated that nitrogen fertilizer improved peanut growth and dry matter accumulation.The response of various peanut cultivars to nitrogen fertilizer was different.Total branch number and branch with pod number of Baisha1016 and Luhua12 got peak at N used 112.5 kg/hm2 level,while total branch number and branch with pod number of Yuanza9102 got peak at N 75 kg/hm2 level.The process of peanut dry-matter accumulation could be simulated with "S" curve.Dry matter accumulated fastest at podding stage,pod dry weight account for 44.9%~49.5% at mature stage.Yuanza9102 got the biggest dry matter accumulation at N 75 kg/hm2 level,while Luhua12 at 112.5 kg/hm2 level.At earlier period,Baisha1016 had the biggest dry matter accumulation at N 75 kg/hm2 level,but at last,Baisha1016 had the biggest dry matter accumulation at N 112.5 kg/hm2 level.The order of the plant height,total branches number,branches with pod,length of lateral branch and amount of dry matter accumulation was Yuanza9102>Baisha1016>Luhua12.更多还原