中国茶叶2023，Vol.45Issue(12)：34-39,6.
茶梗基缓释尿素的养分释放特征及应用效果研究
Study on Nutrient Release Characteristics and Application Effect of Slow-release Fertilizer based on Tea Stalk
摘要
Abstract
In order to obtain a low cost,good performance and biodegradable slow-release urea,the slow-release fertilizers were prepared by extrusion expansion method based on Tieguanyin tea stalks and mixed with urea in different ratios.Then,the three-dimensional microstructure of the slow-release fertilizer was analyzed by scanning electron microscopy(SEM),the nutrient release characteristics of samples in hydrostatic water and soil column were determined by hydrostatic incubation method and soil column leaching method combined with Kjeldahl method.Finally,the application effect of slow-release fertilizer was studied by potting test of corn seedlings.Results showed that the nutrient release rate of self-made slow-release fertilizer was significantly lower than that of ordinary urea,and it took 24 h to fully release,and the lower the proportion of tea stems,the higher the nutrient release rate,which was indicated that the three-dimensional grid structure formed by tea stems had a good nutrient control-releasing performance.The application test results showed that the no.3 sustained-release fertilizer(tea stem 40％:urea 60％)is most beneficial to the growth of corn seedlings.The development of this project can provide a new way for the comprehensive utilization of tea stem resources,so as to realize the green application of tea waste resources and contribute to the goal of"carbon reaching peak and carbon neutral".关键词
茶梗/茶废弃资源/生物可降解/缓释肥料/释控效果Key words
tea stem/tea waste resources/biodegradable/slow-release fertilizer/control-releasing performance分类
农业科技引用本文复制引用
刘盈盈,林东艺,王未名,苏淑颖,张亭,薛志慧,冉琴,冯俊乔,孙欢,黄冲..茶梗基缓释尿素的养分释放特征及应用效果研究[J].中国茶叶,2023,45(12):34-39,6.基金项目
2019年度省教育厅中青年教师教育科研项目(JAT190123)、安溪县科技计划项目(N[2015]0044) （JAT190123）
