期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2003

29

4

312-317

10.3321/j.issn:1007-1032.2003.04.011

2001AA218041:国家高技术研究发展计划（863计划）

本校为第一机构

为更好地开发新型作物控释肥,提供适宜的控释剂和调理剂,以沸石、硅锰肥、硅磷肥、海泡石、麦饭石、风化煤等几种天然养分载体为材料,研究了其本身的养分状况及其对添加氮、磷、钾养分的恒温吸附和解吸性能.结果表明:不同养分载体的养分状况不同,其对添加养分的吸附和解吸能力也表现出明显的差异.沸石对氮的吸附能力明显强于其他几种养分载体;供试养分载体对磷的吸附能力以海泡石最大,明显强于沸石、麦饭石和风化煤;在供试的低浓度范围内,养分载体对钾表现为负吸附,其中尤以沸石和海泡石最明显.解吸试验结果表明,氮与磷相比,氮容易从养分载体上解吸出来,而钾的解吸量远大于吸附量.

Some natural nutrient carriers such as zeolite,sepiolite,medical stone,weathered coal, and some silicabearing cores and so on were tested in order to study their nutrient contents and their characters of the isothermal adsorption and desorption for the added N,P,K. The results indicate that nutrient contents of the tested natural nutrient carriers variy greatly, and their adsorption and desorption capacity for the added nutrients are also different. The adsorption capacity of zeolite for the added N is higher than that of other carriers, whil...