硝基肥中硝态氮含量对桃树生长发育和果实产量及品质的影响

Effect of Different Nitrate Contents of Nitro-compound Fertilizer on the Growth of Peach Tree,Fruits Yield and Quality

以蒙阴县地区晚熟桃树品种"大久保"为试材,研究15-5-20硝基肥配方中硝态氮含量对桃树生长、果实产量及品质的影响,以期探索出硝基肥中合适的硝态氮含量,并加快其在桃树种植区的大量推广。结果表明:与对照相比,各硝基肥处理不但均能显著促进桃树营养枝和结果枝春梢、夏梢及叶片生长,还能够提高叶片中叶绿素含量,硝基肥处理分别较普通复合肥增产13.49%、28.84%和20.00%;硝基肥处理提高了果实中可溶性固形物含量、可溶性糖含量以及还原性维生素C含量,从而改善了果实品质,但随着硝基肥中硝态氮含量的升高,果实有减产和品质下降趋势;以硝态氮含量为5%时效果最好。

Taking ＇Dajiubao＇ peach in Mengyin county as material, the effects of different nitrate contents of nitro-compound fertilizers on the growth of peach tree, fruits yield and quality were studied in order to explore the appropriate nitrogen content and accelerate the popularization and application of nitrate fertilizer in the peach-growing areas. The result indicated that all nitro-compound fertilizer increased the growth of vegetative shoot, bearing shoot and leaf in spring and summer and improved leaf chlorophyll contents, significantly. The yield of peach which applied nitro-compound fertilizer was increased by 13. 49%, 28. 84%, 20. 00% respectively, and significantly improved fruit soluble solids, soluble sugar and reductive VC content, compared with ordinary fertilizer. However, with the nitrate content increased,the fruit yield and quality had a downward trend and it worked the best when the nitrate content was 5 %.