绿橙吊瓶输液施肥浓度与其产量的相关性研究

目的]确定绿橙吊瓶输液施肥的最佳浓度。方法]以6龄绿橙结果树为试验材料,采用吊瓶输液技术分别对其施入不同浓度（1、2、3、4、5、6 g/L）的配比肥料（N∶P∶K=3∶1∶2）,研究肥料浓度与绿橙果实产量的相关性,并考查不同施肥浓度对绿橙主干和茎粗增长的影响。结果]吊瓶输液施肥浓度与绿橙果实产量存在显著相关（R2=0.765）,施肥浓度为3.45 g/L时绿橙果实产量最高（70.35kg/株）,且植株长势较好;施肥浓度为5 g/L时最有利于绿橙茎粗生长,但其主干的高度增长随施肥浓度的升高无明显变化规律;综合考虑各方面因素,施肥浓度为3.00 g/L时较有利于果树生长和生产。结论]6龄绿橙结果树较适宜的吊瓶输液施肥浓度为3.00~3.45g/L。

Study on Correlation between Fertilizer Concentration of Suspending-Bottle Transfusion and Yield of Green Orange

Objective] The aim was to determine the optimum fertilizer concentration of suspending-bottle transfusion for green orange.Method] The 6 years old green orange fruitful trees were taken as the tested materials.The formula fertilizer(N∶ P∶K=3∶1∶2) with different concn.(1,2,3,4,5,6 g/L) was applied for them by suspending-bottle transfusion.The correlation between fertilizer concn.and yield of green orange was studied and the effects of different fertilizer concn.on growth of trunk and stem diameter of green orange were studied.Results] There was significant correlation(R2=0.765) between fertilizer concn.of suspending-bottle transfusion and yield of green orange.When fertilizer concn.was 3.45 g/L the yield of green orange was the highest(70.35 kg/plant) and the plants grown well.The fertilizer concn.of 5 g/L was the most beneficial to growth of stem diameter of green orange.But there was no significant variation in high growth of trunk with the increase of fertilizer concn..Considering all factors,fertilizer concn.of 3.00 g/L was more beneficial to growth and production of fruit trees.Conclusion] The optimum fertilizer concn.of suspending-bottle transfusion for 6 years old green orange fruitful tree was 3.00-3.45 g/L.