Authors

Abstract

To optimize the pelleting formulation of Leymus chinensis seeds for mechanized precision sowing, single-factor and three-factor, three-level orthogonal experiments were conducted using CMC as binder and diatomite and talcum powder as fillers. An integrated evaluation system covering pellet uniformity, seed-bearing rate, compressive strength, cracking time, germination rate, and emergence rate was established. Results showed that CMC concentration, filler ratio, and seed-to-powder ratio all affected pelleting performance. The optimal tested formulation was 1.25% CMC, an 8:2 filler ratio, and a 1:4 seed-to-powder ratio, providing a basis for pelleting and mechanized sowing of small forage seeds.

Abstract in Chinese

为优化羊草种子丸粒化配方并提高其机械化精量播种适应性，以羧甲基纤维素钠（CMC）为黏结剂、硅藻土和滑石粉为填充材料，采用单因素试验结合三因素三水平正交试验，构建兼顾加工性能与生物学表现的综合评价体系，对丸粒化均匀率、有籽率、抗压强度、裂解时间、发芽率和出苗率进行评价。结果表明，CMC浓度、填充剂配比和种粉比均影响羊草种子丸粒化效果，配方优化本质上是对丸粒质量、结构稳定性、裂解性能与幼苗表现之间平衡关系的调控。在所试组合中，1.25% CMC、填充剂配比8∶2、种粉比1∶4综合表现最佳，可为小粒牧草种子丸粒化加工及机械化精量播种提供依据。