摘要
在橡胶树专用肥中添加不同比例的保水剂,研究其对橡胶树专用肥养分释放的影响,并利用经验方程对肥料养分释放曲线进行拟合,以期为开发新型橡胶专用肥提供依据.结果表明：缓释效果随着保水剂A用量的增加而增强,寻找到较好的模型进行拟合研究,运用双常数方程和一级动力学方程对溶出速率曲线和累积溶出率曲线分别进行拟合,相关系数R2分别为0.990 8-1.000 0和0.992 3-0.999 9,并得出保水剂A用量与缓释效果的关系,提出以模型参数的变化规律、溶出抑制率的显著性来确定缓/控释材料的最佳用量,保水剂A的用量在5.0％-6.0％之间较为适宜.
Water retenti on agent with different proportions added in the rubber fertilizer was employed to investigate its influence on the nutrient stripping of specialized rubber fertilizer.An empirical equation was modeled for the nutrient release curve in order to provide a basis for the development of new type rubber fertilizers.Results showed that the slow-release effect increased with more dosage of water retention agent A; Dissolution rate and cumulative dissolution rate curve were modeled by the double constant curve equation and first order kinetics equation,and the correlation coefficient R2 was 0.990 8-1.000 0,and 0.992 3-0.999 9,respectively,and the relationship between the dosage of water retention agent A and slow-release effect was determined.It was put forward that the optimal dosage of slow/controlled release materials was determined by the change rule of model parameters and the significant of dissolution inhibition rate and the amount of water retention agent was more appropriate between 5.0％ and 6.0％.
出处
《热带作物学报》
CSCD
北大核心
2014年第9期1841-1847,共7页
Chinese Journal of Tropical Crops
基金
中国热带农业科学院橡胶研究所基本科研业务费专项(No.1630022012003)
现代农业产业技术体系建设专项资金项目(No.CARS-34)
关键词
保水剂
橡胶树专用肥
缓释效果
模型拟合
溶出抑制率
Water retention agent
Specialized rubber fertilizer
Slow-release effect
Model
Dissolution inhibition rate
