【摘要】 对35年生兰竹荔枝结果树开花、结果和营养枝生长过程主要矿质营养需求量进行了研究。结果表明,兰竹荔枝年产93.08 kg/株,全年在开花、结果和二次秋梢生长所需要的主要矿质营养分别为:N 1 821.55 g,P366.67 g,K 1 865.11 g,Ca 400.31 g,Mg 214.12 g。营养需求分二个阶段,第一是开花、结果阶段,以K和N为主,N、P、K、Ca、Mg比例为1:0.23:1.23:0.14:0.11;第二是采后营养枝生长阶段,以N为主,N、P、K、Ca、Mg比例为1:0.17:0.75:0.33:0.13。研究结果可为荔枝平衡施肥提供营养需求参考指标。更多还原

【Abstract】 he requirement of main mineral nutrition during the branching,flowering,and fruiting in Lanzu,a 35 years old variety of Litchi chinensis Sonn,was studied.The results showed yield was 93.08kg,and the annual requirement of pure N,P,K,Ca,and Mg was1821.55g,366.67g,1865.11g,400.31g 214.12g per plant.The nutritional requirement could be divided into two periods.During the first period(flowering and fruiting),K and N were dominant,and the N∶P∶K∶Ca∶Mgwas1∶0.23∶1.23∶0.14∶0.11,while in the second period(vegetative shoot growing after harvest),N was dominant,and the N∶P∶K∶Ca∶Mgwas1∶0.17∶0.75∶0.33∶0.13.更多还原