【摘要】 在土壤速效氮、钾和有效镁、硼缺乏的,可沙糖桔果园进行氮、磷、钾、镁、硼肥平衡施肥技术及其营养需求特性研究。结果表明,配合施用氮、磷、钾、镁、硼肥提高砂糖桔老熟秋梢叶片N、K、Mg和B养分含量,改善树体营养状况,比当地施肥及仅施用氮钾肥分别增产37.7%和10.1%,增收49.0%和11.0%,而且果实品质较好。在砂糖桔产量约为20 000kg/hm2的条件下,每生产50 kg果实需要吸收N 100.6 g、P 8.6 g、K 65.5 g、Mg 5.2 g和B 106.4 mg。更多还原

【Abstract】 A field experiment was conducted to investigate the effect of N,P,K,Mg and B balanced fertilization on the yield and qulity of Tangerine in orchard,with the soil deficient in available N,K,Mg and B.The results showed that the proper combiantion of N,P,K,Mg and B increaesed the foliar nutrient contents in the mature autumn branches,improved the nutritional status of Tangerine.The balanced fertilization of N,P,K,Mg and B increased the fruit yield by 37.7% and 10.1%,enhanced the plantation profits by 49.0% and 11.0%,as compared to the conbinated application of NPK and the farmer’s practice,respectively.While the fruit yield is approximately 20 000 kg per hectare,100.6 g N,8.6 g P,65.5 g K,5.2 g Mg and 106.4 g B is absorbed to generate 50 kg fruit.更多还原