论文部分内容阅读
通过有机肥在不同土壤水分状况下分解产生的有机酸种类和数量检测、各种有机酸对不同磷酸盐的溶磷试验，对有机肥活化土壤磷的机理进行了研究。结果表明，无论在好气或淹水条件下，猪粪、稻草和纤维素均能明显增加土壤中有机酸含量，其作用为猪粪＞稻草＞纤维素；7种检出的有机酸对不同形态人工合成磷酸盐的溶磷能力为：草酸和乙酸对钙磷的溶磷均有一定效果，多数有机酸对铝磷的溶磷效果均不错，而柠檬酸对铁磷的溶磷效果最好。柠檬酸虽数量不及其它有机酸，但在有机肥活化土壤磷中所起的作用是最大的。铁磷在有机肥活化磷中的贡献较其它形态无机磷大。
Through the detection of the type and amount of organic acids produced by decomposition of organic manure under different soil water conditions, the phosphorus dissolution experiments of different organic acids against different phosphates, and the mechanism of organic phosphorus activation of soil phosphorus were studied. The results showed that pig manure, straw and cellulose could significantly increase the content of organic acids in soil, and the effect was pig manure> straw> cellulose; Phosphate solubilizing ability of synthetic phosphates is: oxalic acid and acetic acid have certain effects on the phosphorus solubilization of calcium and phosphorus. Most of the organic acids have a good effect of dissolving phosphorus on aluminum and phosphorus, while citric acid has the best phosphorus solubilizing effect. Although citric acid is less abundant than other organic acids, the role of organic fertilizers in the activation of soil phosphorus is greatest. Iron phosphorus in organic fertilizer activated phosphorus contribution than other forms of inorganic phosphorus.