Authors

Abstract

To address the low quality of mechanized wheat seeding in rice-stubble fields in the middle and lower reaches of the Yangtze River, caused by high soil moisture content and heavy straw coverage, a press-groove uniform seeding machine was designed. Key mechanisms for rotary tillage, precision seedbed preparation, depth-controlled furrow formation, and banded soil covering were developed, and the overall transmission system and blade-roller arrangement were designed to create a wheat seeder suitable for high-moisture rice-stubble fields. Field tests showed that the vegetation coverage rate after operation was 94.2%, the qualified rate of seeding depth was 98.0%, and the coefficient of variation of seeding uniformity was 18.1%. The machine effectively reduced seed skips and exposed seeds during mechanized seeding in high-moisture fields.

Abstract in Chinese

针对长江中下游水旱轮作区稻茬农田土壤含水率高，秸秆覆盖量大等导致小麦机械化播种质量低的问题，本文设计一种压沟匀播机，研发了旋耕、种床精整、定深种沟成型、带状覆土等关键机构，完成了整机传动、刀辊排列等设计，创制一种适用于高湿稻茬农田的小麦播种机，田间试验表明，机具作业植被覆盖率为94.2%，播深合格率达98%，播种均匀性变异系数为18.1%，有效解决了湿烂田机械化播种的“漏播”“露籽”等问题。