EFFECT OF RICE STUBBLE ON SOIL COMPACTION PROPERTIES OF A CRAWLER UNDERGOING COMBINE HARVESTER HARVESTING

In the process of rice harvesting, passability track combine harvester is often limited by state soil. Meanwhile, wet and soft paddy soil compacted under rolling harvesting machinery, which also affects function ecological environment. Therefore, relationship between physical mechanical properties was studied in this paper. addition, compaction from a on field with without stubble studied. The density gradation were positively correlated cohesion negatively internal friction angle. moisture content 16–36%, Additionally, plastic deformation greater than that stubble, mainly occurred second stage. Increasing speed effectively reduced risk