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近年来我市各地区合理增施磷肥后,提高了土壤肥力,增产效果很显著。为了充分发挥磷肥的增产作用,1973～1974年我们对全市区土壤含磷情况进行了概测。据4个县150份样品分析测定,我市区土壤含磷量较低,一般在0.1～0.2%之间。而有效磷含量各类土壤差异更大,水田土壤中以垡包土、黄砂土、狼屎泥、轻碱土的有效磷含量最少,一般在
In recent years, various regions of our city after the rational application of phosphate fertilizer, increased soil fertility, increase production is very significant. In order to give full play to the role of increasing production of phosphate fertilizer, from 1973 to 1974, we conducted a survey on the soil phosphorus content in the whole city. According to the analysis of 150 samples in 4 counties, the content of phosphorus in the urban area is relatively low, generally between 0.1% and 0.2%. However, there are more differences between available phosphorus and soil types. The available phosphorus content of paddy soils, yellow sand, wollastonite and light alkaline soils is the least