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我省柑桔主产区的柑桔主栽品种叶片营养成分分析结果表明:1.我省柑园缺锌现象较普遍。据对芦柑等63片果园进行叶片分析,其中有26片果园叶样含锌量在25ppm 以下,占41.27%。其他果园叶样含锌量也多处于“适量”的下限。开花前喷布0.1%硫酸锌,叶片含锌量可提高13～130%,但喷锌后会引起叶片中其他营养元素含量的变化,铁、镁、锰、钙含量均呈不同程度降低。2.我省山地柑园缺镁症亦较常见,有60%左右叶样含镁量低于0.30%。叶片含钙量亦多在3.0%以下。3.我省柑园柑桔叶片含锰量多属正常,铁、铜含量偏高,但未见有不良影响。
The main citrus cultivars in our province’s main cultivated varieties of leaves of the nutritional content of the results showed that: 1. The phenomenon of zinc deficiency in our province orange garden more common. According to the analysis of 63 orchards such as citrus leaves, there are 26 orchards foliar zinc content below 25ppm, accounting for 41.27%. Other orchard leaf-like zinc content is also at the “appropriate amount” of the lower limit. Spraying 0.1% zinc sulfate before flowering can increase the zinc content by 13-130%. However, after spraying zinc, the content of other nutrients in leaves will change, and the content of iron, magnesium, manganese and calcium decrease to different extents. 2. Magnesium deficiency in mountainous citrus groves in our province is also more common, with about 60% leaf-like magnesium content less than 0.30%. Leaf calcium content is also more than 3.0%. 3 citrus garden citrus leaves manganese content is normal, iron, copper content is high, but no adverse effects.