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土壤酸碱度是土壤肥力的重要因素之一。它影响土壤养分的存在状态、转化、有效性及柑桔根系的生长发育。因而,对柑桔吸收养分、树体营养状况、产量等均有一定影响。据我场调查结果,历年高产稳产柑园的土壤pH值在5.0—6.5之同。我场柑园土壤属赤红壤,显酸性或强酸性。为了解柑园土壤酸碱度及其改良措施,我们进行了几次土壤酸碱度普查及有关试验。一、柑园土壤酸碱度变化调查1.柑园土壤酸碱度变化的基本状况1973年以后,我场柑桔开始施用石灰,但1978年土壤酸碱度普查结果,pH(取土深度0—30厘米)
Soil pH is one of the important factors of soil fertility. It affects soil nutrient status, transformation, availability, and citrus root growth and development. Thus, the absorption of citrus nutrients, tree nutritional status, yield and so have a certain impact. According to my field survey results, over the years, high and stable yield citrus soil pH value of 5.0-6.5 at the same. My field orange garden soil is red soil, acidity or acidity. To understand the citrus orchards soil pH and its improvement measures, we conducted several soil pH survey and related experiments. First, citrus garden soil pH changes 1. Citrus soil pH changes in the basic situation After 1973, my field citrus began to use lime, but in 1978 the results of soil pH survey, pH (soil depth 0-30 cm)