This document specifies the model and main performance indicators, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of the tractor-type straw feed baler (hereinafter referred to as the baler). This document is applicable to the one-time processing of crop straw (corn, wheat, cereal straw, soybeans, etc.) as raw material, through picking, crushing, kneading, soil removal, compaction, automatic netting and other fully automatic operations, which is in line with the direct feeding of cattle and sheep. Feed balers that require forage.