沙糖桔平衡施肥技术研究  

Effect of balance fetilization on Tangerine

作　　者：李国良[1] 姚丽贤[1] 周修冲[1] 杨苞梅[1] 涂仕华 

机构地区：[1]广东省农科院土壤肥料研究所/广东省养分资源循环利用与耕地保育重点实验室,广东广州510640 [2]国际植物营养研究所成都办事处,四川成都610066

出　　处：《广东农业科学》2009年第4期40-42,共3页Guangdong Agricultural Sciences

基　　金：国际植物营养研究所(IPNI)国际合作项目;广东省科技计划项目(2008A020100022)

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。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 theproper eombiantion 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.

关 键 词：砂糖桔 镁 硼 平衡施肥 

分 类 号：S666.9[农业科学—果树学] S147.3[农业科学—园艺学]