论文部分内容阅读
以皖北设施农业区主要土壤类型——潮土和砂姜黑土为例,对比研究两种土壤中磷素的转化,并分析了施肥浓度对各无机磷形态转化的影响.采用增施外源磷肥的盆栽预实验,然后经由蒋柏藩、顾益初提出的石灰性土壤无机磷分级方法,测定各自无机磷的转化情况,最后对实验数据进行分析比较.结果表明:设施土壤会因起始土壤的不同,其各形态无机磷转化是迥异的;本文还采用指数曲线较好地反映了砂姜黑土和潮土中各形态无机磷转化与施入磷浓度的关系;还进一步分析了两种土壤中无机磷转化的分配规律.
Taking the major soil types of facility agricultural area in North Anhui as an example, the change of phosphorus in two soils was compared with that of shajiang black soil, and the effect of fertilization concentration on the transformation of inorganic phosphorus was analyzed. Phosphate fertilizer pot experiments, and then through the Jiang Bo Fan, Gu Yushi initial lime soil inorganic phosphorus grading method to determine the conversion of inorganic phosphorus, and finally the experimental data were analyzed and compared.The results show that: the facility soil will be different due to the initial soil, The transformation of inorganic phosphorus in different forms is very different. The exponential curve is also used to better reflect the relationship between inorganic phosphorus conversion and phosphorus application in Shajiang black soil and alluvial soil. Inorganic phosphorus The distribution of transformation rules.