美国为避免土壤机械压实而采取的农机措施

The Development of Agricultural Tractor Design for Avoiding Soil Compaction Induced by Vehicles Traffic in United States of America

针对农业耕作措施发生的极大的变化,农业措施的改变对作物生长影响状况,介绍了近几十年来美国针对轮胎膨胀压和载重过大是导致农田土壤过度压实的主要原因。为此,对农业拖拉机设计采取的一系列技术措施,如四轮驱动、增加轮胎宽度和轮胎数、发展链轨拖拉机、改变链轨和轮胎结构等,为我国农机的发展提供参考。

According to the agricultural tillage＇s measures have changed largely, the agricultural measure＇s change effects the crop＇s growth, the main reasons of soil compaction induced by vehicles traffic are recognized as excessive inflation and load. This paper introduces the techniques have been adopted to reduce tractor tires＇ inflation in United States of America, such as 4 wheels drive, increased the width and numbers of tire, develop track tracters, improve track and tire structure, etc, in late decades. It uses for reference to our tractor development.