棉花双膜覆盖精量播种机的研制

为弥补传统精量播种模式存在的不足、减少作业环节和人工消耗，在分析膜上、膜下穴播优缺点的基础上，根据双膜覆盖精量播种技术的农艺要求，研制出一种棉花双膜覆盖精量播种机。通过田间对比试验，表明双膜覆盖精量播种较常规穴播出苗早2～3 d，出苗率≥94%，苗株齐壮。20万hm2的生产实践表明，研制的2BMSJ-12双膜覆盖精量播种机空穴率≤3%，穴粒数合格率≥85%；窄行最小行距为9 cm，能适应新疆棉花密植种植农艺要求，有助于推进新疆棉花生产全程机械化进程。

Development of double-film mulch precision planter for cotton seedin

In order to solve the problem of traditional precision seeding technology and reduce farming processess and labor consumption, a 2BMSJ-12 double-film mulch precision planter for cotton seeding was developed based on the agronomic technical requirement and the analysis of the advantage and disadvantage of seeding under and upon the mulching film. Field experimental results showed that the cotton seedling emerged 2-3 days earlier, the seedling emergence rate exceeded 94% and all the seedlings were strong in good trim by using this planter when compared with the traditional drilling style. More than 200 000 hm2 field practice of the 2BMSJ-12 planter showed that the cavities ratio of cotton seeding was less than 3%, the qualification rate of seeds into holes was over 85% and the minimum row spacing of the planter was 9 cm. Thus, it indicate that the planter can meet agronomic technical requirement of serried row planting of cotton in Xinjiang area, and also help to promote the whole-course mechanization of cotton industry.