江西省方竹林土壤养分有效态含量特征

对江西省方竹林地土壤主要营养元素有效态含量进行检测，分析土壤pH值、有机质含量对土壤营养元素有效态含量的影响。结果表明：江西省方竹林土壤整体上呈弱酸性，不同养分元素间含量差异较大，有效锌、有机质和速效氮含量较丰富，有效磷和速效钾缺乏；土壤pH值与有机质含量之间的相关性较小；土壤元素有效态含量随着pH值的增大而逐步增加，在pH值为7.0左右达到峰值，随后呈下降趋势；有机质和pH值对各元素有效态含量的影响大小基本一致，有效锌和有效磷之间的相关性最大，达到了极显著水平，而速效氮和速效钾之间的相关性最小。

Characteristics of Available Nutrient Contents in Soil of Chimonobambusa quadrangularis Forest in Jiangxi Province

The paper detects the available-state contents of main nutrient elements in the soil of Chimonobambusa quadrangularis forest in Jiangxi province, and analyzes the effects of soil pH value and organic matter content on the available-state contents. The results show that the soil in C. quadrangularis forest there is weakly acidic on the whole, while there are great differences in the contents between nutrient elements, e.g., rich in available zinc, organic matter and available nitrogen and deficient in available phosphorus and available potassium. The soil pH value and organic matter content is little correlated. With the increase of pH value, the available-state contents of nutrient elements increase gradually, reach the peak when the pH value is about 7.0 and then go down. The effect of organic matter and pH value on the available-state content of each elements is basically the same. The correlation between available zinc and available phosphorus is the largest, reaching a very significant level, while the correlation between available nitrogen and available potassium is the smallest.