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近几年,许多地区秋季整地以旋代耕的现象越来越严重。且多年连续使用旋耕机作业,造成耕作层过浅,土壤板结,犁底层加厚,严重影响了农作物根系正常发育。通过对作物根系土壤剖面分析发现,根系生长至犁底层时,呈倒“T”字型,且有萎缩现象。如此耕作,不仅土壤蓄水保肥性能差,而且作物抗旱涝、抗倒伏的能力降低,从而影响了作物产量。
In recent years, the phenomenon of rotary sowing in many areas in autumn has become more and more serious. And continuous use of rotary tiller for many years, resulting in too shallow tillage, soil compaction, thick plow the bottom, seriously affecting the normal development of crop roots. According to the analysis of crop root soil profile, it was found that when the root system grew to the bottom of the plow, it was inverted “T” and had atrophy. So farming, not only poor soil water storage and fertilizer performance, but also drought-resistant crops, lodging resistance reduced, thus affecting the crop yield.