论文部分内容阅读
本文主要运用数理统计的方法对重庆茶园土壤的酸化特性和肥力特征作了一系列的相关分析,结果表明茶园土壤在不同pH值区段内的化学性质随pH值的变化差异明显,特别是当土壤pH值处于4.55.0区段时,对于酸化过程的抑制能力明显减弱,其盐基离子的脱除速度也显著增加,交换性阳离子中致酸离子比例增大,而当土壤pH值处于5.0以上区段时,对于酸化过程的抑制能力则明显增强,盐基脱除速度也迅速下降,交换性阳离子中致酸离子比例下降。随着土壤有机质含量的增加,其致酸离子的含量也在增加,这也就促进了土壤盐基的迅速脱除,导致土壤进一步酸化。另外,茶园土壤中的肥力特征在各pH区段也表现出较为明显的差异.在整个茶园土壤中,磷、钾、锌等植物生长所必需的元素均有不同程度的缺失,而以磷、钾的缺失尤其严重,这充分说明土壤酸化程度加剧对茶树生长十分不利。
In this paper, a series of correlation analysis was made on the acidification and fertility characteristics of tea plantation soils using mathematical statistics. The results showed that the chemical properties of tea plantation soils varied with pH value in different pH ranges, especially when When the soil pH value is in the 4.55.0 section, the inhibitory ability to the acidification process is significantly weakened, the removal rate of the salt ions is significantly increased, and the proportion of acid ions in the exchangeable cation is increased. When the soil pH is at 5.0 In the above sections, the inhibition of acidification was significantly enhanced, the rate of base removal was also rapidly decreased, and the proportion of acid ions in exchangeable cations decreased. With the increase of soil organic matter content, the content of acid-producing ions is also increasing, which prompts the rapid removal of soil base and further soil acidification. In addition, the fertility characteristics of tea plantation soil also showed more obvious differences in each pH section.In the whole tea plantation soil, the elements necessary for the growth of plants such as phosphorus, potassium and zinc all had different degrees of deficiency, while the phosphorus, Potassium deficiency is particularly serious, which fully shows that the degree of acidification of the soil is very unfavorable to the growth of tea plants.