论文部分内容阅读
利用田间栽培试验,研究0(对照)、18、24和30 g N·m~(-2)4个氮肥用量对油用牡丹“凤丹”叶片氮素吸收转运以及籽粒产量和品质的影响.结果表明:施用氮肥处理牡丹株高、冠幅、花径和花干质量与对照相比均显著增加,其中,24和30 g·m~(-2)氮肥处理株高比对照分别增加14.7%和15.2%.施用氮肥提高了牡丹籽粒的相关指标,24和30 g·m~(-2)氮肥处理籽粒产量达到最大,分别比对照增加15.2%和15.4%.施用氮肥明显增加了叶片氮素积累量、叶片氮素转移量和籽粒氮素积累量.其中,24 g·m~(-2)氮肥处理叶片氮素对籽粒贡献率最大.与对照相比,施用氮肥明显提高了籽粒蛋白氮、总氨基酸,以及部分饱和脂肪酸和不饱和脂肪酸的含量.在本试验条件下,施氮量为24 g N·m~(-2)时,叶片积累氮素向籽粒的转移量、转移率和贡献率均达到较高水平,籽粒产量较高,并且蛋白氮、氨基酸含量和不饱和脂肪酸含量也相对较高.
Field cultivation experiments were conducted to study the effects of nitrogen (0, 0, 0, 0, 0, control), nitrogen application rates of 18, 24 and 30 g N · m -2 on N uptake and translocation of leaves and grain yield and quality of Peony The results showed that the plant height, crown width, flower diameter and flower stem weight of peony treated with nitrogen increased significantly compared with the control, and the plant height of 24 and 30 g · m -2 nitrogen treatments increased respectively 14.7% and 15.2% respectively.The application of nitrogen fertilizer increased the related index of peony kernel, and the grain yield of peony kernel was the highest at 24 and 30 g · m -2, respectively, which increased 15.2% and 15.4% The amount of nitrogen accumulation, the amount of nitrogen translocation in leaves and the amount of nitrogen accumulation in grains, of which, the nitrogen contribution of 24 g · m -2 nitrogen fertilizer to grain was the largest, and compared with the control, Protein nitrogen, total amino acids, and partially saturated fatty acids and unsaturated fatty acids.Under this experimental condition, the amount of nitrogen translocated to the grain by the nitrogen application was 24 g N · m -2, Rate and contribution rate reached a higher level, higher grain yield, and protein nitrogen, amino acid content and unsaturated fatty acids The amount is relatively high.