中国烟草科学2025，Vol.46Issue(6)：8-15,8.DOI:10.13496/j.issn.1007-5119.2025.06.002
硅藻土和蛭石粉配比对粉体性质和烟草丸化种子质量的影响
Impact of Diatomite and Vermiculite Powder Ratios on Properties of the Mixture and Quality of Tobacco Pelleted Seeds
摘要
Abstract
To improve the quality of tobacco pelleted seeds and meet the operational requirements of modern air-suction seeders,this study used diatomite(L)and vermiculite powder(M)as test materials.Eleven mixture formulations were designed based on mass ratio(namely L,L9M1,L8M2,L7M3,L6M4,L5M5,L4M6,L3M7,L2M8,L1M9,M).The differences in 10 powder indices,4 pelleted seed indices,and 7 germination indices among these 11 formulations were analyzed,and the correlations between these indices were investigated.The results showed that diatomite had a larger particle size range,Carr index,porosity,Hausner ratio,and tapped density than vermiculite powder,while its particle size width,bulk density and equilibrium moisture content were lower(p≤0.05).In the mixtures,as the proportion of vermiculite powder increased,the particle size width and equilibrium moisture content increased significantly,while the other powder indicators exhibited multimodal trends.The disintegration time of seeds pelletized with diatomite was significantly shorter than that with vermiculite powder,whereas the compressive strength showed the opposite trend(p≤0.05).In the mixtures,as the proportion of vermiculite powder increased,the thousand-seed mass,compressive strength and disintegration time of the pelleted seeds increased,while the breakage rate decreased(p≤0.05).Significant positive or negative correlations were observed between the 10 powder indicators of the fillers and the 4 quality indicators of pelleted seeds,while no significant correlations were found with the other 6 germination indicators,except for seedling length(p≤0.05).Among the 11 formulations,L1M9 demonstrated superior performance in particle size width,Carr index,porosity,Hausner ratio,and water solubility.The germination rate,compressive strength,and disintegration time of L1M9 pelleted seeds complied with national standards.Moreover,they possessed a high thousand-seed mass and a low breakage rate,making them well-suited for air-suction seeders.Therefore,it is suggested that the combination of diatomite and vermiculite powder in a mass ratio of 1∶9 be accelerated for pilot-scale trials and even promotion.关键词
种子丸化/粉体性质/配伍组合/硅藻土/蛭石粉/发芽Key words
seed pelleting/powder properties/formulation/diatomite/vermiculite powder/germination分类
农业科技引用本文复制引用
LUO Changjing,WU Yushi,LIU Yiling,LIU Xuexu,LI Delun,LI Zhenhua..硅藻土和蛭石粉配比对粉体性质和烟草丸化种子质量的影响[J].中国烟草科学,2025,46(6):8-15,8.基金项目
国家自然科学基金项目(32060512) （32060512）
贵州省重大科技成果转化项目{黔科合中引地[2024]027号} （）
贵州省优秀青年科技人才项目{黔科合平台人才YQK[2023]004号} （）
