秸秆育苗钵质量和性能影响因素及成本分析

为进一步研究作物秸秆育苗钵的质量和性能，该研究对5种作物秸秆制备秸秆育苗钵的成型质量、成品强度、育苗效果和加工成本进行了比较分析。结果表明：随粉碎细度的增加，秸秆育苗钵一次模塑成型率增加，破损率降低，吸水率增加，播种出苗率增加而根系生长降低，粉碎秸秆成本增加。育苗钵成型率主要与粉碎细度相关，而破损率、吸水率和育苗质量与秸秆种类和粉碎细度二者均有关。5种秸秆中，紫苏秸秆成型质量和育苗效果最好，玉米秸秆加工成本最低，因此玉米秸秆和紫苏秸秆更适于生产推广。

Influence factors on quality and properties of straw blocks and cost analyses

In order to study the quality and properties of straw block (SB), five crops straw materials were used to product SB, and the product forming rate, strength, seedling breeding effect and cost were evaluated and analyzed through experiments. Results showed that forming rate of machine-molding, water absorption, emergence rate and process cost of SB increased with the increase of straw grinding fineness, but breakage rate and root growth decreased. Forming rate of SB mainly related to grinding fitness, while breakage rate, water absorption and seedling quality related to both types of materials and grinding fitness. Among the 5 materials, SB from perilla stalk was best in product quality and seedling effect while SB from corn stalk had the lowest process costs. Therefore, SB from corn stalk and perilla stalk were suitable in production.