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通过对隆安县玉米种植面积分布较大的１３个地层进行调查，采取地层岩石、土壤和玉米叶样，分别分析其中３１个矿物元素含量，进行地层之间元素含量比较和玉米产量与地层岩石、土壤、玉米叶的营养元素相关性分析，在隆安Ｔ２－３Ｐ１、Ｎ和Ｃ１ｄ为玉米生产优势地层；Ｔ１Ｃ、Ｃ２、Ｄ３Ｔ１ｂ、Ｐ１ｑ、Ｃ１ｙ、Ｃ３和Ｄ２ｄ２为中势地层；Ｐ１ｍ和Ｐ２为劣势地层。发现玉米不但是耐氯力强，而且可能是一种喜氯作物，并有聚氯特点。
By investigating 13 formations with large corn acreage distribution in Longan County, the strata of rock, soil and maize leaves were used to analyze the contents of 31 mineral elements, and to compare the element contents between the strata and the correlation between the corn yield and the formation rock, Soil and maize leaves. T2-3P1, N and C1d were the dominant production strata in Long’an; T1C, C2, D3T1b, P1q, C1y, C3 and D2d2 were middle-potential strata; P1m and P2 were inferior strata . It was found that corn is not only chlorine-resistant, but also a hi-chloride crop with polychloride characteristics.