板结羊草草地切根松土镇压机设计与试验
Design and Experiment of Root-cutting and Subsoiler for Compacted Leymus chinensis Grassland
张学宁 1尤泳 2王得伟 2李思标 2王昭宇 2胡鹏展 2王德成2
作者信息
- 1. 山东理工大学农业工程与食品科学学院,淄博 255091
- 2. 中国农业大学工学院,北京 100083
- 折叠
摘要
为提升板结羊草草地机械化改良效果,提出了一种板结羊草草地机械化改良工艺并设计了一种草地切根松土镇压机.通过探究羊草草地根土复合体层物理结构特征和农艺农机融合,提出了板结羊草草地切根松土镇压改良新工艺,设计了专用于板结草地改良作业的斜柄式切根刀、折翼式松土铲、V形镇压辊,集成创制了草地切根松土镇压机,并通过草地试验验证了该机作业性能.试验结果表明,松土、切根松土作业后草地土壤坚实度分别降低59.99％、59.77％,容重分别降低23.62％、22.99％,孔隙度分别增加20.71％、20.16％,切根松土作业后沟槽缝隙宽度、土壤隆起高度、垄形轮廓面积、土壤蓬松度、翻垡率和地表平整度均小于松土作业;松土和切根松土作业深度稳定性系数均不小于95.17％,但在相同作业速度下,切根松土作业深度稳定性系数始终高于松土作业,且切根松土比松土更接近预期作业深度(15cm);镇压作业可将切根松土作业产生的沟槽缝隙适度填合.
Abstract
To improve the mechanized improvement effect of compacted Leymus chinensis grassland,a mechanized improvement process for compacted Leymus chinensis grassland was proposed and a grassland root-cutting and soil loosening compactor was invented.By exploring the physical structure characteristics of the root-soil composite layer of Leymus chinensis grassland and the analysis of the integration of agronomy and agricultural machinery,a technology for the improvement of the root-cutting and soil-loosening of Leymus chinensis grassland was proposed.An oblique-handled root-cutting knife,a folding-wing loosening shovel,and a V-shaped compacting roller specially used for the improvement of compacted grassland were designed.A grassland root-cutting,loosening and compacting machine was integrated and created,and its operating performance was verified through grassland tests.The test results showed that the firmness of grassland soil after loosening operation and root-cutting and loosening operation were decreased by 59.99% and 59.77% respectively,the bulk density was decreased by 23.62% and 22.99% respectively,and the porosity was increased by 20.71% and 20.16% respectively,and the groove gap width,soil uplift height,ridge contour area,soil looseness,tillage rate and surface flatness after root-cutting and loosening operations were all smaller than those after loosening operations.The operating depth stability coefficients of loosening operation and root-cutting and loosening operation were no less than 95.17%,but at the same operating speed,the operating depth stability coefficient of root-cutting and loosening operations was always higher than that of loosening operations,and root-cutting and loosening operations were closer to the expected operating depth(15 cm)than loosening operations.The suppression operation can fill the groove gap generated by the root-cutting and loosening operation appropriately.
关键词
羊草/板结草地/草地切根/草地松土/草地改良机械Key words
Leymus chinensis/compacted grassland/grassland root-cutting/grassland loosening/grassland improvement machine引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据