摘要
土壤类型,土壤理化特性以及地形小气候对柑桔产量及品质影响很大,紫红土,红沙土为高产优质土,灰红土为中产优质土,麻沙土为中产中质土,在一定范围内,随着土壤中大于0.02mm砂粒含量增加。柑桔产量和品质明显提高,两者呈极显著正相关和显著正相关,土壤和叶片中的各种营养元素与柑桔产量及品质的相关性,除土壤交换性钙有显著正相关外,其它都不够显著·红壤桔园普遍缺磷、少钾、低钙,微量元素中主要缺乏锌和硼,随海拔高度上升,冰糖橙产量有所下降,果实含酸量明显增加,品质变差。
Soil types,their physical and chemical characters and local climate have great effect on citrus yield and quality.Purple red soil and red sandy soil are high yield and good quality soil; grey red soil is mid-yield and high quality soil; rough sandy soil is mid-yield and mid-quality soil;and red muddy soil and yellowish red soil are low yield and poor quality soil for Citrus unshiu Marc. but low-yield and mid-quality soil for Citrus sinensis (L.) Osbeck In certain extent, with the increase of sandy particles (>0.02mm)in soil citrus yield and quality increase evidently, showing significant and most significant relations. All kinds of nutrition elements except soil exchanged Ca in soil and leaf are not significantly related to citrus yield and quality. It's common that red soil in citrus orchard lacks of macronutrients P, K and Ca and micronutrients Zn and B. The higher the altitude,the lower the yield and quality of Citrus sinensis(L.)Osbeck and acid content in fruit increases with the increase of the orchard elevation.
关键词
红壤
柑桔
土壤条件
丘陵
krasnozem
citrus-reticulata trees
soil condition
hill
