【摘要】 在红棕紫泥、棕紫泥和红紫泥上,枳砧锦橙春梢与秋梢叶片均呈严重的网状黄化失绿症状,秋梢明显重于春梢;红桔砧植株仅出现轻度斑驳状失绿黄化,香橙砧上几无病症表现。在卵石黄泥和矿子黄泥上,绵橙春叶转绿后,出现较重的叶尖缘黄化。灰棕紫泥上的植株生长正常。植株生长与结果的总趋势是枳砧>香橙砧>红桔砧。在3种碱性紫色土上,枳砧植株黄化主要系缺Fe,Mn 及B 所引起,红桔砧植株的症状主要是缺Mn,Zn 及Fe 所致;黄壤上出现的病症为缺Ca 所造成。更多还原

【Abstract】 Trials were carried out with Jinchen orange (Citrus sinensis(L.)Osbeck) trees on 3 rootstocks grown in six soils typical for Sichuancitrus gooves.Differential degrees of chlorosis on various rootstocks andsoils were noticed.On the red brown purple soil,Jinchen orange trees onPoncirus trifoliata rootstock exhibited severe net-like chlorosis on theirspring and autumn flush leaves,Hongju-tangerine-stocked trees showedlight mottle-spotted chlorosis on their leaves,while no chlorosis occurredon trees on C.junos rootstock.On cobble yellow soil and mine yellowsoil,after the spring flush leaves turned green,the Jinchen orangetrees showed chowed chlorosis on the tip of their leaves.The treesobserved in these trials appeared healthy on gray brown purple soil.The chlorosis on P.trifoliata-stocked trees on 3 alkaline purple soilswere brought about by Fe-deficiency,that on Hongju rootstock by Mn-andZn-deficiency,and the leaf tip chlorosis on yellow soils might haveresulted from Ca-deficiency.更多还原